[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.1"]
[White "Urkedal, Frode Olav Olsen"]
[Black "Pacl, Vaclav"]
[Result "1-0"]
[ECO "A50"]
[WhiteElo "2553"]
[BlackElo "2021"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,85,17,41,20,32,7,50,19,85,75,90,63,118,106,137,91,96,100,108,66,72,66,66,66,66,68,68,66,59,59,99,59,105,49,118,86,126,123,151,117,111,101,230,221,219,219,215,224,314,298,337,338,319,257,452,444,503,474,587,577,806,755,2048,2067,2119,1388,1322,1212,29985,29986]} 1. d4 Nf6 2. c4 Nc6 3. Nf3 e6 4. Nc3 Bb4 5. Bd2 O-O 6. Qc2 d6 7. a3 Bxc3 8. Bxc3 Qe7 9. e3 e5 {9...e5 is better than 9...a5.} 10. d5 {E33: Nimzo-Indian: Classical: 4...Nc6.} Nb8 11. Be2 Nbd7 {[#]} (11... Bg4 $11) 12. e4 $146 {White is slightly better.} ({Predecessor:} 12. b4 Ne8 13. O-O f5 14. Rac1 f4 15. exf4 Rxf4 16. c5 Ndf6 17. cxd6 cxd6 18. Bd2 {½-½ (43) Donchenko,A (2632)-Svane,F (2329) Playchess.com INT 2021}) 12... Ne8 (12... a5 $11 {keeps the balance.}) 13. Nd2 {White is more active.} g6 14. h4 Ng7 {[#]} (14... a5 $14) 15. g4 $1 $16 a5 16. h5 (16. O-O-O $142) 16... a4 17. O-O-O Nc5 18. hxg6 (18. Kb1 $16) 18... fxg6 $14 19. Rh2 Ne8 20. Rdh1 Rf7 21. Kb1 Nf6 22. f3 Nfd7 23. Qc1 c6 24. Nf1 cxd5 25. cxd5 ({White should try} 25. exd5 $16 Nb3 26. Qe3) 25... Nf8 (25... b6 $14) 26. Qe3 Bd7 27. Nd2 b5 {Prevents Nc4.} 28. Rc1 Be8 29. Rhh1 (29. Rf1 {looks sharper.} Rc8 30. Rfh1 Rb8 31. Rh4 Rf4 32. Nf1) 29... Qd8 {[#] Loses the game.} (29... Rb8 $16 {might work better.}) 30. Bxe5 $1 $18 {[%mdl 512]} dxe5 31. Rxc5 Rb7 32. Qc3 Qb8 (32... Rab8 {was necessary.} 33. Qb4 (33. Qxe5 Nd7 $11) 33... Qe7) 33. Qb4 Qa7 34. Rhc1 ({Avoid the trap} 34. Bxb5 $2 Rab8 35. Qc3 Bxb5 $17) 34... Rab8 35. Ka2 g5 $2 (35... Nd7 36. Rc8 Nb6) 36. Nf1 ({Less strong is} 36. Rc8 Qb6 37. Nf1 Rf7 38. Rxb8 Qxb8 $18) 36... Ng6 37. Ng3 Nf4 38. Bf1 h5 39. gxh5 Nxh5 40. Nxh5 Bxh5 41. Qd2 Rg7 42. Qh2 Bxf3 43. Rc8+ {Weighted Error Value: White=0.16 (very precise) /Black=0.60} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.2"]
[White "Brhel, Jan"]
[Black "Pijpers, Arthur"]
[Result "0-1"]
[ECO "D86"]
[WhiteElo "2016"]
[BlackElo "2485"]
[Annotator "TA"]
[PlyCount "54"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,54,0,0,0,15,0,0,-12,0,0,0,0,0,-6,0,0,8,4,17,0,78,0,0,0,0,-16,-3,-2,0,-666,-650]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 Nc6 9. Be3 O-O 10. O-O b6 11. Rb1 cxd4 12. cxd4 Na5 13. Bd3 e6 14. Qd2 {D87: Exchange Grünfeld: Classical Line: Variations without ...cxd4.} Bb7 15. Bh6 Rc8 16. Rbc1 {The position is equal.} Qe7 17. Bxg7 Kxg7 {[#]} 18. Rxc8 $146 ({Predecessor:} 18. f4 f5 19. d5 Rxc1 20. Rxc1 fxe4 21. Bxe4 exd5 22. Qd4+ Qf6 23. Rc7+ Kh8 24. Qxf6+ Rxf6 {½-½ (41) Birens,E (2099)-Milesi,L (2140) France 1999}) 18... Rxc8 19. Rc1 {Inhibits Nc4.} Rxc1+ 20. Qxc1 Qb4 21. h4 Nc6 22. h5 gxh5 (22... Nxd4 $2 23. h6+ Kg8 24. Nxd4 Qxd4 {[#]} 25. Qc7 $1 $18) (22... Qd6 $11 {keeps the balance.}) 23. e5 (23. d5 $16 Ne5 24. Qg5+ Ng6 25. Ng3) 23... Kf8 $11 24. a3 Qa4 25. Qh6+ Ke8 {[#] Threatens to win with ...Qd1+.} 26. Qxh7 Qxa3 27. Nf4 $2 {[%mdl 8192]} (27. Qh8+ $11 Ke7 28. Bb5) 27... Qc1+ {Weighted Error Value: White=0.65/Black=0.17 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.3"]
[White "Mirzoev, Azer"]
[Black "Cap, Piotr"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2420"]
[BlackElo "2014"]
[Annotator "NA"]
[PlyCount "97"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:06]} d6 {[%emt 0:00:36]} 2. e4 {[%emt 0:00:10]} Nf6 {[%emt 0:00:31]} 3. Nc3 {[%emt 0:00:07]} g6 {[%emt 0:00:33]} 4. Be3 {[%emt 0:00:07]} Bg7 {[%emt 0:00:27]} 5. Qd2 {[%emt 0:00:12]} a6 {[%emt 0:02:01]} 6. Bh6 {[%emt 0:00:14]} Bxh6 {[%emt 0:02:11]} 7. Qxh6 {[%emt 0:00:11]} b5 {[%emt 0:02:25]} 8. f3 {[%emt 0:00:21]} e5 {[%emt 0:01:34]} 9. Nge2 {[%emt 0:01:34]} Qe7 {[%emt 0:03:30]} 10. dxe5 {[%emt 0:05:18]} (10. a3 $14) 10... dxe5 {[%emt 0:01:22]} 11. O-O-O {[%emt 0:00:08]} Bb7 {[%emt 0:03:34]} 12. h4 {[%emt 0:07:47]} Nbd7 {[%emt 0:04:05]} 13. g4 {[%emt 0:00:40]} Qf8 {[%emt 0:02:50]} 14. Qd2 {[%emt 0:02:42]} Nb6 {[%emt 0:03:06]} 15. Ng3 {[%emt 0:06:34]} h5 {[%emt 0:05:30]} 16. g5 {[%emt 0:12:49]} Nfd7 {[%emt 0:01:28]} 17. Bh3 {[%emt 0:00:07]} Qe7 {[%emt 0:05:37]} (17... O-O-O $1 $11) 18. Nd5 {[%emt 0:02:31]} Bxd5 {[%emt 0:00:12]} 19. exd5 {[%emt 0:00:13]} Nc4 {[%emt 0:02:14]} 20. Qc3 {[%emt 0:00:22]} Ndb6 {[%emt 0:04:20]} 21. b3 {[%emt 0:12:43]} Qa3+ {[%emt 0:03:14]} 22. Kb1 $16 {[%emt 0:00:04]} Na4 {[%emt 0:05:44]} 23. Qa1 {[%emt 0:00:09]} Rb8 {[%emt 0:06:48]} 24. Ne4 {[%emt 0:07:31]} O-O {[%emt 0:02:07]} 25. Rhe1 {[%emt 0:05:58]} Nab2 {[%emt 0:09:04]} 26. Rc1 {[%emt 0:05:53]} Rfd8 {[%emt 0:02:51]} 27. Bf1 {[%emt 0:00:41]} Rxd5 {[%emt 0:03:30]} 28. Bxc4 {[%emt 0:00:13]} Nxc4 {[%emt 0:00:52]} 29. Qc3 {[%emt 0:00:08]} Nd2+ {[%emt 0:05:06]} 30. Nxd2 {[%emt 0:00:27]} b4 {[%emt 0:01:06]} 31. Qa1 {[%emt 0:06:21]} Rxd2 {[%emt 0:00:38]} 32. Qxe5 {[%emt 0:00:10]} Rb5 {[%emt 0:05:21]} 33. Qf6 {[%emt 0:09:01]} Rb8 {[%emt 0:02:10]} 34. Re7 {[%emt 0:03:05]} Rf8 {[%emt 0:00:35]} 35. Rxc7 {[%emt 0:01:32]} Qa5 {[%emt 0:01:09]} 36. Qf4 {[%emt 0:01:54]} Rd5 {[%emt 0:02:53]} 37. Rc4 {[%emt 0:00:48]} Rb5 {[%emt 0:01:04]} 38. Re1 {[%emt 0:00:51]} Qb6 {[%emt 0:00:29]} 39. Kb2 {[%emt 0:01:47]} a5 {[%emt 0:00:13]} 40. Re5 {[%emt 0:00:40]} Rxe5 {[%emt 0:05:54]} 41. Qxe5 {[%emt 0:30:09]} a4 {[%emt 0:01:57]} 42. bxa4 {[%emt 0:00:00]} Qb7 {[%emt 0:04:30]} 43. Qe4 Qd7 44. Rxb4 {[%emt 0:00:00]} Re8 {[%emt 0:01:21]} 45. Qd3 {[%emt 0:00:00]} Qe7 {[%emt 0:00:56]} 46. a3 {[%emt 0:00:00]} Qe5+ {[%emt 0:00:37]} 47. Qd4 {[%emt 0:00:00]} Qg3 {[%emt 0:01:10]} 48. Qf4 {[%emt 0:00:00]} Qe1 {[%emt 0:00:41]} 49. Rb8 {[%emt 0:00:00]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.4"]
[White "Lhotska, Anna"]
[Black "Neuman, Petr"]
[Result "0-1"]
[ECO "B57"]
[WhiteElo "2014"]
[BlackElo "2402"]
[Annotator "ChessBase"]
[PlyCount "62"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:04]} c5 {[%emt 0:00:09]} 2. Nf3 {[%emt 0:00:12]} d6 {[%emt 0:00:05]} 3. d4 {[%emt 0:00:06]} cxd4 {[%emt 0:00:04]} 4. Nxd4 {[%emt 0:00:06]} Nf6 {[%emt 0:00:04]} 5. Nc3 {[%emt 0:00:09]} Nc6 {[%emt 0:00:05]} 6. Bc4 {[%emt 0:00:50]} Qb6 {[%emt 0:00:50]} 7. Nb3 {[%emt 0:12:10]} e6 {[%emt 0:00:46]} 8. O-O {[%emt 0:02:09]} a6 {[%emt 0:00:47]} 9. Be3 {[%emt 0:02:51]} Qc7 {[%emt 0:00:07]} 10. a4 {[%emt 0:04:07]} b6 {[%emt 0:04:37]} 11. f4 {[%emt 0:07:25]} Be7 {[%emt 0:01:12]} 12. Qe1 {[%emt 0:04:38]} O-O {[%emt 0:05:09]} 13. Qg3 {[%emt 0:05:31]} Rb8 {[%emt 0:21:46]} 14. Rae1 {[%emt 0:10:28]} g6 {[%emt 0:06:07]} 15. Bd3 {[%emt 0:18:57]} Na5 {[%emt 0:06:45]} 16. Nd4 {[%emt 0:02:43]} Nc4 {[%emt 0:01:49]} 17. Bc1 {[%emt 0:01:08]} Qc5 {[%emt 0:01:10]} 18. Nce2 {[%emt 0:02:37]} Bb7 {[%emt 0:07:41]} 19. b3 {[%emt 0:04:50]} Na5 {[%emt 0:00:36]} 20. Be3 {[%emt 0:02:00]} Qc7 {[%emt 0:01:06]} 21. f5 {[%emt 0:06:30]} Nh5 {[%emt 0:04:48]} 22. Qg4 {[%emt 0:01:50]} Nf6 {[%emt 0:01:11]} 23. Qh3 {[%emt 0:00:46]} gxf5 {[%emt 0:05:57]} 24. Nxf5 {[%emt 0:07:04]} exf5 {[%emt 0:00:57]} 25. Qxf5 {[%emt 0:00:37]} Nc6 {[%emt 0:04:12]} 26. Bg5 {[%emt 0:02:56]} Bc8 {[%emt 0:01:00]} 27. Qf2 {[%emt 0:00:21]} Ng4 {[%emt 0:00:47]} 28. Qf4 {[%emt 0:00:23]} Nce5 {[%emt 0:00:56]} 29. h3 {[%emt 0:00:39]} Ng6 {[%emt 0:00:19]} 30. Qd2 {[%emt 0:00:23]} Qc5+ {[%emt 0:00:08]} 31. Kh1 {[%emt 0:00:26]} Bxg5 {[%emt 0:00:09]} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.5"]
[White "Haring, Filip"]
[Black "Kobl, Rudolf"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2398"]
[BlackElo "2009"]
[Annotator "ChessBase"]
[PlyCount "91"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:04]} c5 {[%emt 0:00:39]} 2. Nf3 {[%emt 0:00:12]} e6 {[%emt 0:00:29]} 3. Nc3 {[%emt 0:00:57]} Nc6 {[%emt 0:00:21]} 4. d4 {[%emt 0:01:22]} cxd4 {[%emt 0:00:14]} 5. Nxd4 {[%emt 0:00:07]} Qc7 {[%emt 0:00:06]} 6. Be3 {[%emt 0:01:38]} a6 {[%emt 0:00:06]} 7. Qf3 {[%emt 0:00:32]} Bd6 {[%emt 0:00:29]} 8. O-O-O {[%emt 0:02:10]} Be5 {[%emt 0:00:09]} 9. g3 {[%emt 0:00:58]} Nge7 {[%emt 0:00:53]} 10. Qe2 {[%emt 0:02:17]} b5 {[%emt 0:01:08]} 11. f4 {[%emt 0:02:17]} Nxd4 {[%emt 0:00:27]} 12. Bxd4 {[%emt 0:00:14]} Bxd4 {[%emt 0:00:06]} 13. Rxd4 {[%emt 0:00:07]} Rb8 {[%emt 0:00:48]} 14. Bg2 {[%emt 0:06:13]} Bb7 {[%emt 0:08:49]} 15. Rhd1 {[%emt 0:01:45]} Bc6 {[%emt 0:04:15]} 16. Nd5 {[%emt 0:00:25]} Nxd5 {[%emt 0:14:42]} 17. exd5 {[%emt 0:00:12]} Ba8 {[%emt 0:06:01]} 18. f5 {[%emt 0:00:56]} O-O {[%emt 0:13:39]} 19. f6 {[%emt 0:14:33]} gxf6 {[%emt 0:12:52]} 20. Kb1 {[%emt 0:04:04]} Rbc8 {[%emt 0:07:07]} 21. Rh4 {[%emt 0:08:18]} Qe5 {[%emt 0:08:15]} 22. Re4 {[%emt 0:00:04]} Qc7 {[%emt 0:00:54]} 23. c3 {[%emt 0:03:35]} Kh8 {[%emt 0:02:54]} 24. Qh5 {[%emt 0:01:32]} Rg8 {[%emt 0:02:46]} 25. Qxf7 {[%emt 0:00:23]} Rcf8 {[%emt 0:00:27]} 26. Qh5 {[%emt 0:01:58]} f5 {[%emt 0:02:26]} 27. Re2 {[%emt 0:06:21]} Qd6 {[%emt 0:04:35]} 28. Rf2 {[%emt 0:03:59]} Qc5 {[%emt 0:02:39]} 29. Qe2 {[%emt 0:02:39]} Rg6 {[%emt 0:01:05]} 30. Rf4 {[%emt 0:03:27]} a5 {[%emt 0:01:03]} 31. a3 {[%emt 0:05:03]} Kg8 {[%emt 0:00:53]} 32. Rh4 {[%emt 0:03:12]} Rb8 {[%emt 0:01:23]} 33. dxe6 {[%emt 0:05:13]} Bxg2 {[%emt 0:00:03]} 34. exd7 {[%emt 0:01:33]} Bd5 {[%emt 0:04:02]} 35. Qe8+ {[%emt 0:00:06]} Rxe8 {[%emt 0:00:42]} 36. dxe8=Q+ {[%emt 0:00:08]} Kg7 {[%emt 0:00:13]} 37. Rxd5 {[%emt 0:01:02]} Qxd5 {[%emt 0:00:22]} 38. Qe7+ {[%emt 0:00:03]} Kg8 {[%emt 0:00:52]} 39. Qxh7+ {[%emt 0:00:10]} Kf8 {[%emt 0:00:04]} 40. Qxg6 {[%emt 0:00:08]} Qd1+ {[%emt 0:00:05]} 41. Ka2 {[%emt 0:30:02]} Qd5+ {[%emt 0:30:26]} 42. c4 {[%emt 0:00:05]} bxc4 {[%emt 0:00:11]} 43. Rh8+ {[%emt 0:00:15]} Ke7 {[%emt 0:00:05]} 44. Rh7+ {[%emt 0:00:03]} Kd8 {[%emt 0:00:14]} 45. Qf6+ {[%emt 0:00:25]} Kc8 {[%emt 0:00:27]} 46. Qf8+ {[%emt 0:00:04]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.6"]
[White "Van de Lagemaat, Arend"]
[Black "Jurcik, Marian"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "2008"]
[BlackElo "2397"]
[Annotator "TA"]
[PlyCount "122"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,122,0,6,8,39,-17,-3,-27,-34,-38,-27,-74,-64,-92,-75,-95,-70,-113,-88,-79,-74,-123,0,-45,-59,-66,-48,-33,8,0,15,28,16,10,13,-37,0,0,42,64,89,56,117,60,64,-15,-12,-77,-74,-209,-55,-42,-43,-38,-68,-168,-159,-218,-218,-227,-231,-246,-253,-246,-245,-268,-255,-271,-256,-234,0,-268,-268,-268,-268,-267,-239,-247,-239,-246,-247,-246,-246,-260,-235,-235,-236,-246,-241,-264,-243,-266,-256,-5443,-6812,-3147,-794,-5830,-3940,-12824,-9641,-12832,-12831,-12829,-12831,-12831,-585,-12845,-12845,-12846,-12847,-12847,-12847,-12847,-12847]} 1. d4 Nf6 2. Nf3 d5 3. g3 c5 4. Bg2 cxd4 5. O-O h6 6. b3 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Bg4 7. Nxd4 (7. Ne5 $1 $14) 7... e5 $11 8. Nf3 {The position is equal.} (8. h3 $5 {[%cal Rh3g4]}) 8... Nc6 9. Bb2 {[#]} Qc7 $146 ({Predecessor:} 9... Bd6 10. Nbd2 O-O 11. c4 d4 12. Qc2 Rc8 13. a3 Qd7 14. Ne4 Nxe4 15. Qxe4 Bf5 {0-1 (31) Gil,L (1836)-Vilaisarn,A (2205) Bastia 2007}) 10. c4 (10. h3 $11 Be6 11. e3) 10... d4 $1 $17 11. Na3 Bc5 12. h3 Bh5 13. Nc2 (13. Nb5 $15 Qe7 14. a3) 13... O-O 14. Nh4 e4 {[%cal Od4d3] Strongly threatening ...d3!} 15. b4 (15. g4 $2 Bxg4 $1 {[%mdl 512]} 16. b4 d3 $1 17. bxc5 dxe2 $1 $19) (15. Qe1 $142) 15... d3 {Black is more active.} 16. bxc5 (16. Bxf6 $11 dxc2 17. Qd5 Bxe2 18. bxc5 Bxf1 19. Rxf1 gxf6 20. Qxe4) 16... dxe2 $15 (16... Bxe2 17. Qd2 Bxf1 18. Rxf1 dxc2 19. Bxf6 gxf6 20. Bxe4 $16) 17. Qd6 exf1=Q+ 18. Kxf1 Ne8 (18... Qxd6 $15 19. cxd6 Rfd8 20. Bxf6 gxf6) 19. Qd5 $11 Bf3 20. Nxf3 exf3 21. Qxf3 Rd8 22. Re1 {Prevents Ne5.} (22. Qc3 $11) 22... Qd7 23. Ne3 Qd3+ (23... Qd2 $11 {was preferrable.} 24. Ba1 f5) 24. Kg1 $14 {[%mdl 1024] White has compensation.} Qd2 25. Rb1 ({But not} 25. Re2 Nd4 $1 26. Bxd4 (26. Rxd2 $2 Nxf3+ 27. Bxf3 Rxd2 $19) 26... Qxd4 $15) 25... Qa5 (25... Qd3 $14 26. Qf5 (26. Rd1 Qg6 $14) 26... Qxf5 27. Nxf5 Rd7) 26. Qf5 (26. Nf5 $16 {[%cal Of5h6] Black must now prevent Nxh6+!} Qxc5 27. Ba3 Qxc4 28. Bxf8 (28. Rxb7 Qa6 $14) 28... Kxf8 29. Rxb7) 26... Ne7 $1 27. Qh5 (27. Qe5 $14 Nc6 28. Qc3 Qxc3 29. Bxc3) 27... b6 $11 28. Be4 (28. Qe5 $1 $11 {keeps the balance.} Ng6 29. Qc3) 28... Qxc5 $17 29. Qh4 (29. Nd5 $17) 29... Qg5 $2 (29... f5 $1 $19 {[%cal Rf5e4]} 30. Bd5+ Kh7) 30. Qxg5 $15 hxg5 31. Ba3 {A strong pair of Bishops.} Nd6 32. Bd3 (32. Bc2 $1 $15) 32... Rfe8 $19 {[%cal Od6b5]} 33. c5 {[#]} (33. Bc2 $17) 33... bxc5 $1 34. Bxc5 {[#]} Nc6 $1 35. Rb3 Ne4 36. Bxe4 Rxe4 37. Rb7 a5 38. Rc7 Nb4 39. Ra7 Nc6 $2 ({Black should try} 39... Nd3 $19 40. Bb6 Rd6 41. Bxa5 Ra4) 40. Ra6 $2 {[%mdl 8192]} (40. Rc7 $1 $11) 40... Re6 41. Kg2 Rc8 42. Ba3 Re5 43. Bd6 {[#]} Nb4 $1 {[%mdl 512] And now ...Re6 would win.} 44. Ra7 Re6 45. Bxb4 axb4 {[%mdl 4096] Endgame KRR-KRN} 46. Rb7 Ra8 47. Rxb4 Rxa2 {...Rxe3 is the strong threat.} 48. Rb3 g6 49. Rc3 Kg7 50. g4 Rf6 51. Rc2 (51. Nc2) 51... Rxc2 {Black is clearly winning.} 52. Nxc2 {KR-KN} Ra6 (52... Rc6 $142 53. Nd4 Rc3) 53. Nd4 Ra3 54. Nf3 Kf6 55. Kg3 Ke6 56. Kg2 f6 57. Ng1 Ke5 58. f3 Kf4 59. Ne2+ Ke3 60. Ng1 Ra2+ 61. Kg3 Ra1 {Weighted Error Value: White=0.79/Black=0.30} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.7"]
[White "Czerw, Dawid"]
[Black "Ricken, Katharina"]
[Result "1/2-1/2"]
[ECO "E00"]
[WhiteElo "2396"]
[BlackElo "2004"]
[Annotator "ChessBase"]
[PlyCount "77"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:03]} e6 {[%emt 0:00:04]} 2. c4 {[%emt 0:00:21]} Bb4+ {[%emt 0:00:04]} 3. Bd2 {[%emt 0:00:56]} Qe7 {[%emt 0:00:08]} 4. e4 {[%emt 0:05:02]} Nc6 {[%emt 0:00:42]} 5. Nf3 {[%emt 0:03:13]} Nf6 {[%emt 0:01:45]} 6. Bd3 {[%emt 0:03:14]} Bxd2+ {[%emt 0:01:51]} 7. Nbxd2 {[%emt 0:02:31]} e5 {[%emt 0:00:51]} 8. d5 {[%emt 0:06:57]} Nb4 {[%emt 0:01:29]} 9. Bb1 {[%emt 0:06:00]} a5 {[%emt 0:00:19]} 10. O-O {[%emt 0:04:22]} O-O {[%emt 0:00:10]} 11. a3 {[%emt 0:04:21]} Na6 {[%emt 0:01:11]} 12. Bc2 {[%emt 0:00:11]} d6 {[%emt 0:00:44]} 13. b4 {[%emt 0:00:59]} Bg4 {[%emt 0:00:26]} 14. Rb1 {[%emt 0:02:20]} c6 {[%emt 0:04:36]} 15. Qe2 {[%emt 0:12:39]} axb4 {[%emt 0:01:30]} 16. axb4 {[%emt 0:00:06]} c5 {[%emt 0:00:20]} 17. bxc5 {[%emt 0:02:04]} Nxc5 {[%emt 0:00:22]} 18. Rb2 {[%emt 0:00:58]} Ra3 {[%emt 0:02:01]} 19. Rfb1 {[%emt 0:03:55]} Rfa8 {[%emt 0:01:17]} 20. h3 {[%emt 0:03:32]} Bxf3 {[%emt 0:00:34]} 21. Nxf3 {[%emt 0:00:41]} Ra2 {[%emt 0:07:02]} 22. Nd2 {[%emt 0:03:31]} Nfd7 {[%emt 0:04:47]} 23. Nf1 {[%emt 0:01:10]} Qd8 {[%emt 0:03:06]} 24. Ne3 {[%emt 0:00:41]} g6 {[%emt 0:01:07]} 25. g3 {[%emt 0:01:33]} h5 {[%emt 0:03:58]} 26. Kg2 {[%emt 0:01:51]} Qg5 {[%emt 0:06:20]} 27. h4 {[%emt 0:02:17]} Qd8 {[%emt 0:01:34]} 28. Nd1 {[%emt 0:00:49]} Rxb2 29. Rxb2 {[%emt 0:00:22]} Ra3 {[%emt 0:03:36]} 30. Qd2 {[%emt 0:03:10]} Kg7 {[%emt 0:01:37]} 31. Rb5 {[%emt 0:06:15]} Qa8 {[%emt 0:05:57]} 32. Ne3 {[%emt 0:02:45]} Qd8 {[%emt 0:02:47]} 33. Qc1 {[%emt 0:02:47]} Ra5 {[%emt 0:02:05]} 34. Rb2 {[%emt 0:01:11]} Qa8 {[%emt 0:01:28]} 35. g4 {[%emt 0:02:22]} Ra1 {[%emt 0:04:16]} 36. Rb1 {[%emt 0:02:57]} Rxb1 {[%emt 0:00:41]} 37. Bxb1 {[%emt 0:00:08]} Qd8 {[%emt 0:07:29]} 38. gxh5 {[%emt 0:07:02]} Qxh4 {[%emt 0:00:51]} 39. hxg6 {[%emt 0:00:07]} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.8"]
[White "Prazak, Daniel"]
[Black "Blahynka, Martin"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "1993"]
[BlackElo "2399"]
[Annotator "ChessBase"]
[PlyCount "72"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:03]} c5 {[%emt 0:00:06]} 2. Nf3 {[%emt 0:00:34]} d6 {[%emt 0:00:07]} 3. Bb5+ {[%emt 0:00:13]} Nd7 {[%emt 0:00:08]} 4. d4 {[%emt 0:01:21]} cxd4 {[%emt 0:00:06]} 5. Qxd4 {[%emt 0:00:10]} a6 {[%emt 0:02:11]} 6. Bxd7+ {[%emt 0:00:53]} Bxd7 {[%emt 0:00:05]} 7. Nc3 {[%emt 0:00:48]} Rc8 {[%emt 0:08:27]} 8. O-O {[%emt 0:01:23]} e5 {[%emt 0:00:20]} 9. Qd3 {[%emt 0:00:09]} Qc7 {[%emt 0:00:50]} 10. Rd1 {[%emt 0:05:30]} h6 {[%emt 0:07:11]} 11. Nd2 {[%emt 0:04:21]} Nf6 {[%emt 0:00:10]} 12. Nf1 {[%emt 0:03:01]} Qc4 {[%emt 0:00:36]} 13. Qxc4 {[%emt 0:12:26]} Rxc4 {[%emt 0:02:14]} 14. Ne3 {[%emt 0:01:46]} Rd4 {[%emt 0:06:14]} 15. f3 {[%emt 0:02:49]} Rxd1+ {[%emt 0:00:29]} 16. Nexd1 {[%emt 0:00:59]} Be7 {[%emt 0:01:00]} 17. Ne3 {[%emt 0:10:19]} h5 {[%emt 0:10:41]} 18. b3 {[%emt 0:10:44]} Be6 {[%emt 0:14:49]} 19. Ba3 {[%emt 0:10:03]} Kd7 {[%emt 0:00:35]} 20. Rd1 {[%emt 0:01:17]} Rc8 {[%emt 0:17:17]} 21. Rd3 {[%emt 0:02:09]} Ne8 {[%emt 0:07:05]} 22. Ncd5 {[%emt 0:12:59]} Bxd5 {[%emt 0:02:57]} 23. Rxd5 {[%emt 0:00:08]} g6 {[%emt 0:10:08]} 24. Kf2 {[%emt 0:03:02]} Ke6 {[%emt 0:00:19]} 25. c4 {[%emt 0:03:07]} f5 {[%emt 0:00:23]} 26. Rd1 {[%emt 0:08:43]} fxe4 {[%emt 0:01:11]} 27. fxe4 {[%emt 0:00:23]} Nf6 {[%emt 0:00:06]} 28. Nd5 {[%emt 0:00:08]} Nxe4+ {[%emt 0:00:26]} 29. Ke3 {[%emt 0:02:41]} Nc5 {[%emt 0:00:05]} 30. Rf1 {[%emt 0:01:07]} Bg5+ {[%emt 0:01:13]} 31. Ke2 {[%emt 0:00:16]} b5 {[%emt 0:03:58]} 32. g3 {[%emt 0:00:33]} Ne4 {[%emt 0:01:07]} 33. Kd3 {[%emt 0:01:18]} Nd2 {[%emt 0:01:07]} 34. Rc1 {[%emt 0:01:35]} bxc4+ {[%emt 0:00:10]} 35. bxc4 {[%emt 0:00:04]} e4+ {[%emt 0:00:48]} 36. Ke2 {[%emt 0:00:15]} Nxc4 {[%emt 0:00:27]} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.9"]
[White "Fus, Jakub"]
[Black "Poessel, Christian"]
[Result "1-0"]
[ECO "B43"]
[WhiteElo "2384"]
[BlackElo "2003"]
[Annotator "ChessBase"]
[PlyCount "49"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:14]} c5 {[%emt 0:00:10]} 2. Nc3 {[%emt 0:00:42]} e6 {[%emt 0:00:09]} 3. Nf3 {[%emt 0:00:59]} a6 {[%emt 0:00:25]} 4. d4 {[%emt 0:01:26]} cxd4 {[%emt 0:00:48]} 5. Nxd4 {[%emt 0:00:08]} d6 {[%emt 0:00:03]} 6. g3 {[%emt 0:06:01]} Nf6 {[%emt 0:04:38]} 7. Bg2 {[%emt 0:00:38]} Be7 {[%emt 0:01:18]} 8. O-O {[%emt 0:01:13]} O-O {[%emt 0:00:40]} 9. b3 {[%emt 0:04:20]} Qc7 {[%emt 0:02:05]} 10. Bb2 {[%emt 0:01:41]} Bd7 {[%emt 0:00:12]} 11. Nce2 {[%emt 0:09:54]} Nc6 {[%emt 0:01:35]} 12. c4 {[%emt 0:01:37]} Rac8 {[%emt 0:01:19]} 13. Rc1 {[%emt 0:02:12]} Qb8 {[%emt 0:01:40]} 14. Re1 {[%emt 0:07:25]} b5 {[%emt 0:16:31]} 15. Nxc6 {[%emt 0:02:00]} Bxc6 {[%emt 0:01:42]} 16. cxb5 {[%emt 0:07:59]} axb5 {[%emt 0:01:12]} 17. Rxc6 {[%emt 0:01:42]} Rxc6 {[%emt 0:00:24]} 18. e5 {[%emt 0:00:13]} Nd5 {[%emt 0:00:23]} 19. Bxd5 {[%emt 0:01:04]} exd5 {[%emt 0:00:32]} 20. Nd4 {[%emt 0:00:05]} Qc8 {[%emt 0:06:43]} 21. exd6 {[%emt 0:05:58]} Bxd6 {[%emt 0:03:50]} 22. Nxc6 {[%emt 0:00:07]} Qxc6 {[%emt 0:01:18]} 23. Qg4 {[%emt 0:00:06]} f6 {[%emt 0:02:33]} 24. Qe6+ {[%emt 0:00:24]} Kh8 {[%emt 0:08:08]} 25. Ba3 {[%emt 0:00:24]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.10"]
[White "Walter, Ema"]
[Black "Kozak, Antoni"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2000"]
[BlackElo "2356"]
[Annotator "ChessBase"]
[PlyCount "92"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:04]} c6 {[%emt 0:00:30]} 2. d4 {[%emt 0:00:06]} d5 {[%emt 0:00:04]} 3. f3 {[%emt 0:00:03]} e6 {[%emt 0:00:04]} 4. Nc3 {[%emt 0:00:07]} Bb4 {[%emt 0:01:57]} 5. Bd2 {[%emt 0:00:05]} b6 {[%emt 0:05:05]} 6. g3 {[%emt 0:14:47]} Nf6 {[%emt 0:05:30]} 7. e5 {[%emt 0:06:19]} Ng8 {[%emt 0:01:37]} 8. Nce2 {[%emt 0:04:06]} Bxd2+ {[%emt 0:02:58]} 9. Qxd2 {[%emt 0:02:46]} Ne7 {[%emt 0:01:17]} 10. Nh3 {[%emt 0:06:00]} Ba6 {[%emt 0:02:51]} 11. Nf2 {[%emt 0:05:50]} c5 {[%emt 0:00:28]} 12. c3 {[%emt 0:09:21]} Nbc6 {[%emt 0:00:28]} 13. Nf4 {[%emt 0:02:35]} Bxf1 {[%emt 0:00:45]} 14. Kxf1 {[%emt 0:01:14]} O-O {[%emt 0:00:12]} 15. Kg2 {[%emt 0:02:43]} Rc8 {[%emt 0:09:38]} 16. Rac1 {[%emt 0:02:41]} Nf5 {[%emt 0:02:21]} 17. Ne2 {[%emt 0:02:35]} f6 {[%emt 0:01:23]} 18. Nf4 {[%emt 0:09:18]} Qe7 {[%emt 0:01:50]} 19. exf6 {[%emt 0:02:03]} Qxf6 {[%emt 0:00:05]} 20. Ng4 {[%emt 0:03:32]} Qf7 {[%emt 0:00:29]} 21. Rhe1 {[%emt 0:03:11]} Rce8 {[%emt 0:06:26]} 22. Ne5 {[%emt 0:01:18]} Nxe5 {[%emt 0:00:19]} 23. Rxe5 {[%emt 0:00:23]} cxd4 {[%emt 0:04:03]} 24. cxd4 {[%emt 0:00:23]} Nh4+ {[%emt 0:00:09]} 25. Kf2 {[%emt 0:06:59]} Ng6 {[%emt 0:00:14]} 26. Nxg6 {[%emt 0:03:31]} Qxf3+ {[%emt 0:00:05]} 27. Kg1 {[%emt 0:00:07]} hxg6 {[%emt 0:00:03]} 28. Qe2 {[%emt 0:04:24]} Re7 {[%emt 0:03:11]} 29. Rc6 {[%emt 0:04:28]} Qxe2 {[%emt 0:07:32]} 30. Rxe2 {[%emt 0:00:03]} Rf6 {[%emt 0:00:05]} 31. Kg2 {[%emt 0:03:09]} Kf7 {[%emt 0:00:02]} 32. Re5 {[%emt 0:00:30]} Rf5 {[%emt 0:00:56]} 33. h4 {[%emt 0:01:36]} Kf6 {[%emt 0:08:02]} 34. Re1 {[%emt 0:00:37]} g5 {[%emt 0:01:04]} 35. h5 {[%emt 0:00:33]} g4 {[%emt 0:02:09]} 36. Rh1 {[%emt 0:00:12]} Rf3 {[%emt 0:00:07]} 37. h6 {[%emt 0:00:35]} gxh6 {[%emt 0:00:06]} 38. Rxh6+ {[%emt 0:00:04]} Kf5 {[%emt 0:00:34]} 39. Rh5+ {[%emt 0:00:50]} Ke4 {[%emt 0:02:28]} 40. Rg5 {[%emt 0:00:13]} Rd3 {[%emt 0:00:39]} 41. Rxg4+ {[%emt 0:07:29]} Ke3 {[%emt 0:00:10]} 42. Rf4 {[%emt 0:03:58]} Rd2+ {[%emt 0:00:47]} 43. Kg1 {[%emt 0:02:50]} Rxd4 {[%emt 0:01:44]} 44. Rc3+ {[%emt 0:03:14]} Rd3 {[%emt 0:00:04]} 45. Rc2 {[%emt 0:03:44]} e5 {[%emt 0:00:34]} 46. Rff2 {[%emt 0:04:18]} Kd4 {[%emt 0:00:49]} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.11"]
[White "Plischki, Sebastian"]
[Black "Elias, Jakub"]
[Result "1/2-1/2"]
[ECO "A64"]
[WhiteElo "2375"]
[BlackElo "2013"]
[Annotator "ChessBase"]
[PlyCount "80"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:05]} Nf6 {[%emt 0:00:10]} 2. c4 {[%emt 0:00:09]} g6 {[%emt 0:00:08]} 3. g3 {[%emt 0:00:28]} Bg7 {[%emt 0:00:08]} 4. Bg2 {[%emt 0:00:07]} O-O {[%emt 0:00:13]} 5. Nc3 {[%emt 0:00:12]} c5 {[%emt 0:01:20]} 6. d5 {[%emt 0:03:39]} d6 {[%emt 0:02:36]} 7. Nf3 {[%emt 0:00:09]} e6 {[%emt 0:00:15]} 8. O-O {[%emt 0:00:12]} exd5 {[%emt 0:00:19]} 9. cxd5 {[%emt 0:00:05]} Re8 {[%emt 0:01:13]} 10. Nd2 {[%emt 0:00:57]} a6 {[%emt 0:01:38]} 11. a4 {[%emt 0:00:06]} Nbd7 {[%emt 0:00:59]} 12. Ra2 {[%emt 0:03:04]} Ne5 {[%emt 0:06:38]} 13. h3 {[%emt 0:04:31]} Nh5 {[%emt 0:04:17]} 14. Kh2 {[%emt 0:01:41]} f5 {[%emt 0:02:29]} 15. f4 {[%emt 0:01:27]} Nf7 {[%emt 0:05:55]} 16. e4 {[%emt 0:04:02]} Nf6 {[%emt 0:04:01]} 17. Re1 {[%emt 0:05:00]} b6 {[%emt 0:06:25]} 18. Nc4 {[%emt 0:05:04]} fxe4 {[%emt 0:02:51]} 19. Nxe4 {[%emt 0:00:25]} Nxe4 {[%emt 0:04:50]} 20. Rxe4 {[%emt 0:00:32]} Rxe4 {[%emt 0:02:10]} 21. Bxe4 {[%emt 0:00:07]} Bd7 {[%emt 0:00:42]} 22. g4 {[%emt 0:06:56]} b5 {[%emt 0:05:36]} 23. axb5 {[%emt 0:10:27]} axb5 {[%emt 0:00:11]} 24. Rxa8 {[%emt 0:00:05]} Qxa8 {[%emt 0:00:10]} 25. Nb6 {[%emt 0:01:16]} Qd8 {[%emt 0:02:22]} 26. Nxd7 {[%emt 0:00:08]} Qxd7 {[%emt 0:00:08]} 27. g5 {[%emt 0:01:29]} Qe7 {[%emt 0:03:51]} 28. Bf3 {[%emt 0:02:23]} Bd4 {[%emt 0:02:10]} 29. h4 {[%emt 0:01:49]} Kf8 {[%emt 0:06:26]} 30. Qe2 {[%emt 0:05:04]} Qxe2+ {[%emt 0:02:59]} 31. Bxe2 {[%emt 0:00:04]} c4 {[%emt 0:03:35]} 32. Bg4 {[%emt 0:07:25]} Nd8 {[%emt 0:03:30]} 33. Bc8 {[%emt 0:01:53]} b4 {[%emt 0:00:33]} 34. Ba6 {[%emt 0:06:24]} c3 {[%emt 0:00:48]} 35. b3 {[%emt 0:02:48]} Bf2 {[%emt 0:04:09]} 36. Kg2 {[%emt 0:01:17]} Bxh4 {[%emt 0:04:03]} 37. Kf3 {[%emt 0:00:28]} Kg7 {[%emt 0:00:52]} 38. Be3 {[%emt 0:04:42]} h6 {[%emt 0:01:38]} 39. gxh6+ {[%emt 0:06:19]} Kxh6 {[%emt 0:00:10]} 40. Ke4 {[%emt 0:07:47]} Nf7 {[%emt 0:09:36]} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.12"]
[White "Shatil, Shir"]
[Black "Van Osch, Mees"]
[Result "0-1"]
[ECO "E90"]
[WhiteElo "1977"]
[BlackElo "2364"]
[Annotator "ChessBase"]
[PlyCount "53"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:02]} Nf6 {[%emt 0:00:04]} 2. c4 {[%emt 0:00:04]} g6 {[%emt 0:00:03]} 3. Nc3 {[%emt 0:00:04]} Bg7 {[%emt 0:00:03]} 4. e4 {[%emt 0:00:04]} d6 {[%emt 0:00:03]} 5. Nf3 {[%emt 0:00:04]} O-O {[%emt 0:00:03]} 6. h3 {[%emt 0:00:02]} e5 {[%emt 0:00:04]} 7. d5 {[%emt 0:00:03]} a5 {[%emt 0:00:02]} 8. Bg5 {[%emt 0:00:05]} Na6 {[%emt 0:00:13]} 9. Nd2 {[%emt 0:01:50]} Qe8 {[%emt 0:00:08]} 10. Be2 {[%emt 0:00:54]} Nd7 {[%emt 0:00:06]} 11. a3 {[%emt 0:00:49]} Nb6 {[%emt 0:00:22]} 12. b3 {[%emt 0:00:53]} f6 {[%emt 0:02:39]} 13. Be3 {[%emt 0:00:07]} f5 {[%emt 0:00:49]} 14. f3 {[%emt 0:07:38]} Bd7 {[%emt 0:01:04]} 15. Qc2 {[%emt 0:00:45]} Nc5 {[%emt 0:04:50]} 16. O-O {[%emt 0:03:54]} Bf6 {[%emt 0:50:37]} 17. b4 {[%emt 0:14:49]} Nca4 {[%emt 0:00:14]} 18. c5 {[%emt 0:16:28]} Nxc3 {[%emt 0:00:13]} 19. Qxc3 {[%emt 0:00:13]} Nc8 {[%emt 0:01:03]} 20. cxd6 {[%emt 0:05:37]} cxd6 {[%emt 0:00:25]} 21. Qc7 {[%emt 0:00:25]} b6 {[%emt 0:08:59]} 22. Bxb6 {[%emt 0:19:31]} Nxb6 {[%emt 0:14:10]} 23. Qxb6 {[%emt 0:00:05]} Bd8 {[%emt 0:00:20]} 24. Qb7 {[%emt 0:12:15]} Rc8 {[%emt 0:00:53]} 25. Nc4 {[%emt 0:03:09]} Rc7 {[%emt 0:01:57]} 26. Qa8 {[%emt 0:04:45]} Rxc4 {[%emt 0:01:54]} 27. Qa6 {[%emt 0:02:25]} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.13"]
[White "Hrabusa, Matej"]
[Black "Sosovickova, Jana"]
[Result "1-0"]
[ECO "D03"]
[WhiteElo "2369"]
[BlackElo "1974"]
[Annotator "NA"]
[PlyCount "101"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:04]} d5 {[%emt 0:00:05]} 2. Nf3 {[%emt 0:00:10]} Nf6 {[%emt 0:00:18]} 3. Bg5 {[%emt 0:01:04]} e6 {[%emt 0:02:03]} 4. e3 {[%emt 0:00:20]} Be7 {[%emt 0:00:46]} 5. Nbd2 {[%emt 0:00:13]} Nbd7 {[%emt 0:01:20]} 6. Bd3 {[%emt 0:00:32]} b6 {[%emt 0:01:56] seems to push 6...c5 aside.} 7. Ne5 {[%emt 0:04:16]} Nxe5 {[%emt 0:04:36]} 8. dxe5 {[%emt 0:00:06]} Nd7 {[%emt 0:00:26]} 9. Bf4 {[%emt 0:02:44]} Bb7 {[%emt 0:02:47] [#]} 10. h4 $146 {[%emt 0:02:07]} ({Predecessor:} 10. Bg3 O-O 11. h4 Nc5 12. Nf3 h6 13. Bf4 f5 14. Nd4 Nxd3+ 15. cxd3 Qd7 16. Qh5 {0-1 (63) Camacho Collados,M (2446)-Oparin,G (2654) Ciudad Real 2021}) 10... Nc5 {[%emt 0:07:02]} 11. Bb5+ {[%emt 0:01:58]} c6 {[%emt 0:00:39]} 12. Bf1 {[%emt 0:01:06]} Qc7 {[%emt 0:07:03]} 13. Qg4 {[%emt 0:02:33]} g6 {[%emt 0:03:16]} 14. h5 {[%emt 0:02:30]} O-O-O {[%emt 0:01:09]} 15. O-O-O {[%emt 0:02:08]} g5 {[%emt 0:07:21]} 16. Bh2 {[%emt 0:03:47]} h6 {[%emt 0:00:44]} 17. Kb1 {[%emt 0:07:07]} Kb8 {[%emt 0:04:12]} 18. Be2 {[%emt 0:03:07]} Ka8 {[%emt 0:02:32]} 19. Rhf1 {[%emt 0:01:52]} Rhg8 $11 {[%emt 0:02:31]} 20. Qh3 {[%emt 0:05:23]} Qc8 {[%emt 0:06:08]} 21. f4 {[%emt 0:04:16]} f5 {[%emt 0:14:22]} 22. g4 {[%emt 0:05:12]} Rdf8 {[%emt 0:02:42]} 23. Rf2 {[%emt 0:03:52]} Ne4 {[%emt 0:03:39]} 24. Nxe4 {[%emt 0:01:33]} fxe4 {[%emt 0:00:27]} 25. f5 {[%emt 0:06:02]} Rf7 {[%emt 0:01:20]} 26. c4 {[%emt 0:04:15]} Bc5 {[%emt 0:04:04]} 27. cxd5 {[%emt 0:05:46]} cxd5 {[%emt 0:00:43]} 28. Rc1 {[%emt 0:00:15]} Qd7 {[%emt 0:01:57]} 29. fxe6 {[%emt 0:01:55]} Qxe6 {[%emt 0:00:52]} 30. Rf5 {[%emt 0:00:36]} Rgf8 {[%emt 0:01:22]} 31. Rcf1 {[%emt 0:01:38]} Bc6 {[%emt 0:04:09]} 32. Qg3 {[%emt 0:02:51]} Be8 {[%emt 0:03:26]} 33. Rxf7 {[%emt 0:03:52]} Rxf7 {[%emt 0:00:55]} 34. Rf6 {[%emt 0:00:15]} Rxf6 {[%emt 0:01:09]} 35. exf6 {[%emt 0:00:06]} Qc8 {[%emt 0:00:21]} 36. Qe5 {[%emt 0:03:55]} Bf7 {[%emt 0:01:51]} 37. Ba6 {[%emt 0:03:32]} Qd8 {[%emt 0:01:14]} 38. a4 {[%emt 0:05:39]} Bxe3 {[%emt 0:05:21]} 39. Bb5 {[%emt 0:01:14]} Kb7 {[%emt 0:01:29]} 40. Qe7+ {[%emt 0:00:24]} Qxe7 {[%emt 0:01:04]} 41. fxe7 {[%emt 0:30:07]} Bd4 {[%emt 0:31:00]} 42. e8=Q {[%emt 0:01:36]} Bxe8 {[%emt 0:00:11]} 43. Bxe8 {[%emt 0:00:06]} a6 {[%emt 0:00:42]} 44. Kc2 {[%emt 0:01:16]} Bg7 {[%emt 0:00:00]} 45. b4 {[%emt 0:00:00]} b5 {[%emt 0:00:00]} 46. axb5 {[%emt 0:00:00]} axb5 {[%emt 0:00:00]} 47. Bxb5 {[%emt 0:00:00]} d4 {[%emt 0:00:00]} 48. Be8 {[%emt 0:00:00]} Kb6 {[%emt 0:00:00]} 49. Bg6 {[%emt 0:00:00]} e3 {[%emt 0:00:00]} 50. Kd3 {[%emt 0:00:00]} Kb5 {[%emt 0:00:00]} 51. Bd6 {[%emt 0:00:00]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.14"]
[White "Duzy, Stefan"]
[Black "Carlsson, Ludvig"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1970"]
[BlackElo "2355"]
[Annotator "NA"]
[PlyCount "84"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:28]} c5 {[%emt 0:01:32]} 2. Ne2 {[%emt 0:00:15]} Nc6 {[%emt 0:00:55]} 3. Nbc3 {[%emt 0:00:14]} g6 {[%emt 0:00:52]} 4. d3 {[%emt 0:01:35]} Bg7 {[%emt 0:04:46]} 5. Be3 {[%emt 0:00:41]} Nd4 $11 {[%emt 0:03:25]} 6. Qd2 {[%emt 0:00:46]} d6 {[%emt 0:05:03]} 7. Nd1 {[%emt 0:00:26]} d5 {[%emt 0:17:30]} 8. c3 {[%emt 0:48:07]} Nxe2 {[%emt 0:02:05]} 9. Qxe2 {[%emt 0:00:50]} b6 {[%emt 0:10:56]} 10. c4 {[%emt 0:04:09]} d4 {[%emt 0:02:36]} 11. Bd2 {[%emt 0:00:14]} h5 {[%emt 0:04:36]} 12. g3 {[%emt 0:06:07]} e5 {[%emt 0:12:47]} 13. h4 {[%emt 0:02:47]} Nh6 {[%emt 0:05:15]} 14. Bh3 {[%emt 0:08:07]} Bxh3 {[%emt 0:01:51]} 15. Rxh3 {[%emt 0:00:12]} Qd7 {[%emt 0:00:04]} 16. Rh1 {[%emt 0:02:11]} O-O {[%emt 0:00:35]} 17. f3 {[%emt 0:01:43]} f5 {[%emt 0:01:59]} 18. Nf2 {[%emt 0:01:23]} Rf7 {[%emt 0:05:52]} 19. O-O-O {[%emt 0:11:31]} Raf8 {[%emt 0:00:45]} 20. Rdf1 {[%emt 0:00:44]} b5 {[%emt 0:07:13]} 21. cxb5 {[%emt 0:05:36]} Qxb5 {[%emt 0:01:06]} 22. Kb1 {[%emt 0:00:15]} f4 {[%emt 0:03:05]} 23. gxf4 {[%emt 0:01:25]} exf4 {[%emt 0:00:10]} 24. Rfg1 {[%emt 0:00:25]} Rf6 {[%emt 0:01:24]} 25. Nh3 {[%emt 0:00:27]} Kh7 {[%emt 0:01:39]} 26. Ng5+ {[%emt 0:01:34]} Kh8 {[%emt 0:00:06]} 27. Nh3 {[%emt 0:00:10]} Qa4 {[%emt 0:01:44]} 28. Qd1 {[%emt 0:01:14]} Qa6 {[%emt 0:00:47]} 29. Qc2 {[%emt 0:00:30]} Ng8 {[%emt 0:01:04]} 30. Rg5 {[%emt 0:00:26]} Rc6 {[%emt 0:01:46]} 31. Nxf4 {[%emt 0:00:49]} Bh6 {[%emt 0:00:13]} 32. Nh3 {[%emt 0:00:36]} Bxg5 {[%emt 0:00:43]} 33. Nxg5 {[%emt 0:00:03]} c4 {[%emt 0:00:08]} 34. dxc4 {[%emt 0:00:15]} Rxc4 {[%emt 0:00:05]} 35. Qb3 {[%emt 0:00:19]} Ne7 {[%emt 0:01:14]} 36. f4 {[%emt 0:00:23]} Nc6 {[%emt 0:00:16]} 37. f5 {[%emt 0:00:57]} Rb8 {[%emt 0:01:47]} 38. Qf3 {[%emt 0:00:25]} Ra4 {[%emt 0:00:51]} 39. fxg6 {[%emt 0:00:58]} Rxb2+ {[%emt 0:00:09]} 40. Kxb2 {[%emt 0:00:34]} Rxa2+ {[%emt 0:00:10]} 41. Kb1 {[%emt 0:05:11]} Ra1+ {[%emt 0:00:17]} 42. Kc2 {[%emt 0:00:04]} Qa4+ {[%emt 0:02:01]} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.15"]
[White "Sorm, Daniel"]
[Black "Bochnickova, Simona"]
[Result "1-0"]
[ECO "A82"]
[WhiteElo "2348"]
[BlackElo "1963"]
[Annotator "ChessBase"]
[PlyCount "53"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:03]} f5 {[%emt 0:00:14]} 2. e4 {[%emt 0:00:15]} fxe4 {[%emt 0:02:36]} 3. Nc3 {[%emt 0:00:19]} g6 {[%emt 0:11:11]} 4. h4 {[%emt 0:03:57]} Bg7 {[%emt 0:02:17]} 5. h5 {[%emt 0:00:12]} d5 {[%emt 0:03:14]} 6. f3 {[%emt 0:01:10]} c5 {[%emt 0:19:56]} 7. dxc5 {[%emt 0:05:24]} Qa5 {[%emt 0:02:21]} 8. Bd2 {[%emt 0:11:31]} Qxc5 {[%emt 0:02:00]} 9. fxe4 {[%emt 0:00:55]} dxe4 {[%emt 0:09:15]} 10. Nxe4 {[%emt 0:05:16]} Qe5 {[%emt 0:00:58]} 11. Bd3 {[%emt 0:00:52]} Qxb2 {[%emt 0:10:52]} 12. Rb1 {[%emt 0:00:50]} Qxa2 {[%emt 0:00:12]} 13. Ng5 {[%emt 0:07:50]} Bg4 {[%emt 0:07:18]} 14. N1f3 {[%emt 0:08:59]} Nc6 {[%emt 0:00:37]} 15. hxg6 {[%emt 0:02:13]} Nf6 {[%emt 0:05:26]} 16. gxh7 {[%emt 0:09:31]} O-O-O {[%emt 0:02:42]} 17. O-O {[%emt 0:01:48]} Ne5 {[%emt 0:02:30]} 18. Be2 {[%emt 0:14:43]} Bxf3 {[%emt 0:05:29]} 19. Bxf3 {[%emt 0:00:52]} Nxf3+ {[%emt 0:00:06]} 20. Qxf3 {[%emt 0:00:22]} Qd5 {[%emt 0:00:06]} 21. Qc3+ {[%emt 0:04:34]} Kb8 {[%emt 0:02:37]} 22. Bf4+ {[%emt 0:00:34]} Ka8 {[%emt 0:00:33]} 23. Ra1 {[%emt 0:05:09]} a6 {[%emt 0:02:03]} 24. Ra5 {[%emt 0:00:32]} Qd4+ {[%emt 0:01:39]} 25. Qxd4 {[%emt 0:00:55]} Rxd4 {[%emt 0:00:01]} 26. Ne6 {[%emt 0:00:05]} Nh5 {[%emt 0:01:43]} 27. Rxh5 {[%emt 0:00:34]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.16"]
[White "Blumel, Otto"]
[Black "Mikes, Jan"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1945"]
[BlackElo "2329"]
[Annotator "ChessBase"]
[PlyCount "38"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:40]} c6 {[%emt 0:00:22]} 2. d4 {[%emt 0:00:39]} d5 {[%emt 0:00:06]} 3. exd5 {[%emt 0:00:09]} cxd5 {[%emt 0:00:05]} 4. c3 {[%emt 0:00:06]} Nc6 {[%emt 0:01:01]} 5. Nf3 {[%emt 0:00:12]} Qc7 {[%emt 0:00:48]} 6. Bd3 {[%emt 0:04:49]} Bg4 {[%emt 0:02:12]} 7. O-O {[%emt 0:06:25]} e6 {[%emt 0:01:09]} 8. Nbd2 {[%emt 0:00:22]} Bd6 {[%emt 0:00:47]} 9. h3 {[%emt 0:01:02]} Bh5 {[%emt 0:00:10]} 10. Re1 {[%emt 0:00:15]} Nge7 {[%emt 0:01:17]} 11. Be2 {[%emt 0:03:20]} Bg6 {[%emt 0:16:49]} 12. Nf1 {[%emt 0:02:37]} a6 {[%emt 0:01:48]} 13. Ne3 {[%emt 0:03:48]} O-O {[%emt 0:03:59]} 14. Nh4 {[%emt 0:06:02]} Be4 {[%emt 0:01:45]} 15. Bd3 {[%emt 0:05:07]} f5 {[%emt 0:02:22]} 16. Nf3 {[%emt 0:02:53]} h6 {[%emt 0:00:36]} 17. Bf1 {[%emt 0:01:04]} Ng6 {[%emt 0:09:50]} 18. Nd2 {[%emt 0:03:28]} Nf4 {[%emt 0:01:37]} 19. Nb3 {[%emt 0:01:16]} Nxh3+ 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.17"]
[White "Kulhanek, Tomas"]
[Black "Azhar, Puteri Rifqah Fahada"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2323"]
[BlackElo "1939"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,61,11,14,18,22,0,30,0,0,0,0,-4,-7,0,12,-4,-10,-8,18,-2,0,-31,-32,-52,0,0,0,-51,0,8,54,52,61,-8,-3,-89,-97,-115,-72,-95,-85,-125,-72,-81,-83,-78,-45,-57,-57,-79,-70,-68,-59,-59]} 1. e4 c5 2. Nc3 e6 3. g3 d6 4. Bg2 a6 5. d3 Nf6 6. f4 {B23: Closed Sicilian: Lines without g3.} Qc7 7. a4 Be7 8. Nf3 {White has an edge.} Nc6 9. O-O Rb8 10. h3 b5 11. axb5 axb5 12. g4 (12. e5 $5 dxe5 13. fxe5 $11) 12... b4 13. Ne2 O-O {[#]} 14. Be3 $146 ({Predecessor:} 14. Ng3 Rd8 15. g5 Ne8 16. Qe1 Nd4 17. Qf2 b3 18. Nxd4 cxd4 19. cxb3 Rxb3 20. Qxd4 {½-½ (26) Lian,M (1865)-Dotan,V (2104) Plovdiv 2010}) 14... Bb7 15. b3 d5 16. g5 Nd7 ({Black should try} 16... Nh5 $1 $15) 17. exd5 $11 exd5 18. Ng3 (18. Nh4 $11) 18... d4 (18... Rfe8 $15) 19. Bd2 Rfe8 (19... g6 $11 {is superior.}) 20. Ne4 $14 f5 21. Ng3 {White is more active.} (21. gxf6 $1 $14 Bxf6 22. Nfg5) 21... g6 $11 22. h4 (22. Nh4 $1 $11) 22... Bd6 $36 {[%mdl 2048] Keeping White busy.} 23. Ne1 Ne7 {Inhibits Bd5+.} ({Black should play} 23... Nb6 24. h5 Re7) 24. Ra7 Qb6 25. Qa1 {[#]} Bxg2 (25... Ra8 $142 $1 {[%mdl 512]} 26. Rxa8 Rxa8) 26. Nxg2 Qc6 27. Qd1 Rb7 28. Rxb7 Qxb7 29. Qe2 {Qe6+ is the strong threat.} Qd5 {Prevents Qe6+.} 30. Re1 Nb6 31. h5 {Weighted Error Value: White=0.24 (precise) /Black=0.18 (very precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.18"]
[White "Kvendseth, Thyra"]
[Black "Lim, Zhuo Ren"]
[Result "0-1"]
[ECO "A62"]
[WhiteElo "1939"]
[BlackElo "2311"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,76,0,0,0,0,0,0,0,0,5,22,0,0,-39,-39,-41,-27,-17,0,0,24,-14,0,0,26,-185,-185,-188,-47,-447,-447,-449,-430,-438,-424,-422,-403,-415,-411,-452,-446,-432,-417,-456,-458,-614,-599,-722,-715,-860,-849,-1856,-1864,-29988,-29989,-29989,-29986]} 1. Nf3 Nf6 2. d4 c5 3. d5 e6 4. c4 exd5 5. cxd5 d6 6. Nc3 g6 7. g3 Bg7 8. Bg2 O-O 9. O-O Re8 10. Bf4 Ne4 11. Nxe4 Rxe4 12. Nd2 {A62: Modern Benoni: Fianchetto Variation without early ...Nbd7.} Rxf4 13. gxf4 Bxb2 14. Rb1 {The position is equal.} Bg7 15. e4 Nd7 {[%cal Ob7b5]} 16. Nc4 Nb6 17. Nxb6 axb6 18. Qb3 Bh6 {[%mdl 1024] Black has compensation.} 19. Qg3 {[#]} ({Don't play} 19. Qxb6 Qxb6 20. Rxb6 Bxf4 $17) 19... Ra5 $146 ({Predecessor:} 19... Rxa2 20. Ra1 Ra6 21. e5 Bf5 22. Rfe1 b5 23. e6 Rxa1 24. Rxa1 fxe6 25. dxe6 Bxe6 26. Bxb7 {0-1 (63) Fernandez Blazquez,D (2248)-Moreno Trujillo,A (2521) Madrid 2019}) 20. Rfe1 b5 21. Rb2 Bd7 22. e5 Ra4 23. Be4 $2 (23. e6 $11 Be8 24. exf7+ (24. e7 Qa5 $15) 24... Bxf7 25. Rxb5) 23... f5 $19 24. e6 {[#]} fxe4 (24... Be8 $1 $19 25. Bg2 (25. Bxf5 $2 Bxf4 26. Qg2 Qf6 $19) 25... Bxf4) 25. Qh3 $2 {[%mdl 8192]} (25. exd7 $15 Qxd7 26. a3) 25... Bg7 26. Rbe2 {[#]} Be8 27. Rxe4 Rxe4 28. Rxe4 Qe7 29. Qg4 b4 30. h4 h5 31. Qh3 Kh7 32. Re3 Bf6 33. f5 Bxh4 34. fxg6+ Bxg6 {And now ...c4 would win.} 35. f4 c4 {White must now prevent ...c3.} 36. Rf3 Be4 {[%csl LRd5,LRf3] ...Qg7+ is the strong threat.} 37. Re3 Qg7+ 38. Rg3 Qxg3+ {Weighted Error Value: White=0.96/Black=0.14 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.19"]
[White "Acor, Corey"]
[Black "Vavruska, Antonin"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "2303"]
[BlackElo "1932"]
[Annotator "ChessBase"]
[PlyCount "63"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:05]} e6 {[%emt 0:00:00]} 2. d3 {[%emt 0:00:11]} d5 {[%emt 0:00:00]} 3. Nd2 {[%emt 0:00:06]} Nf6 {[%emt 0:05:12]} 4. g3 {[%emt 0:00:34]} dxe4 {[%emt 0:04:27]} 5. dxe4 {[%emt 0:00:09]} e5 {[%emt 0:01:01]} 6. Ngf3 {[%emt 0:01:10]} Bc5 {[%emt 0:00:47]} 7. Bg2 {[%emt 0:00:15]} Nc6 {[%emt 0:00:22]} 8. O-O {[%emt 0:00:09]} O-O {[%emt 0:00:08]} 9. Qe2 {[%emt 0:00:56]} Qe7 {[%emt 0:01:38]} 10. c3 {[%emt 0:02:13]} a5 {[%emt 0:00:49]} 11. Nc4 {[%emt 0:01:02]} b6 {[%emt 0:17:19]} 12. Ne3 {[%emt 0:01:12]} Ba6 {[%emt 0:01:12]} 13. c4 {[%emt 0:00:58]} Bxe3 {[%emt 0:03:11]} 14. Bxe3 {[%emt 0:03:23]} Rad8 {[%emt 0:00:09]} 15. Rfd1 {[%emt 0:01:24]} Rxd1+ {[%emt 0:09:03]} 16. Rxd1 {[%emt 0:00:07]} Rd8 {[%emt 0:00:04]} 17. b3 {[%emt 0:06:55]} Bc8 {[%emt 0:01:14]} 18. Rxd8+ {[%emt 0:03:09]} Qxd8 {[%emt 0:01:18]} 19. c5 {[%emt 0:04:23]} Ng4 {[%emt 0:20:22]} 20. Bg5 {[%emt 0:03:02]} Nf6 {[%emt 0:02:59]} 21. cxb6 {[%emt 0:04:56]} cxb6 {[%emt 0:00:01]} 22. h3 {[%emt 0:01:40]} h6 {[%emt 0:04:53]} 23. Be3 {[%emt 0:00:33]} Nd7 {[%emt 0:08:44]} 24. Qb5 {[%emt 0:01:44]} Nb4 {[%emt 0:00:36]} 25. Nxe5 {[%emt 0:01:10]} Nxe5 {[%emt 0:00:50]} 26. Qxe5 {[%emt 0:00:09]} Nxa2 {[%emt 0:01:44]} 27. Qb8 {[%emt 0:00:50]} Kh7 {[%emt 0:00:48]} 28. Kh2 {[%emt 0:01:11]} Qd7 {[%emt 0:01:05]} 29. Qxb6 {[%emt 0:03:51]} a4 {[%emt 0:00:18]} 30. e5 {[%emt 0:02:28]} Nc3 {[%emt 0:01:52]} 31. Qb4 {[%emt 0:04:47]} Nd5 {[%emt 0:03:47]} 32. Qe4+ {[%emt 0:00:15]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.20"]
[White "Zelezny, Jan"]
[Black "Mannion, Stephen R"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "1920"]
[BlackElo "2267"]
[Annotator "NA"]
[PlyCount "82"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:02]} e5 {[%emt 0:00:06]} 2. Nf3 {[%emt 0:00:04]} Nc6 {[%emt 0:00:06]} 3. Bc4 {[%emt 0:00:07]} Bc5 {[%emt 0:00:06]} 4. O-O {[%emt 0:00:15]} Nf6 {[%emt 0:00:10]} 5. d4 {[%emt 0:00:11]} Bxd4 {[%emt 0:00:26]} 6. Nxd4 {[%emt 0:00:08]} Nxd4 {[%emt 0:00:05]} 7. Bg5 {[%emt 0:00:07]} h6 {[%emt 0:08:31]} 8. Bh4 {[%emt 0:00:05]} g5 {[%emt 0:07:24]} 9. f4 {[%emt 0:00:24]} d5 {[%emt 0:35:25]} 10. fxg5 {[%emt 0:21:11]} Bg4 {[%emt 0:24:22]} 11. Qe1 {[%emt 0:03:17]} dxc4 {[%emt 0:04:22]} 12. g6 {[%emt 0:15:42]} Ne2+ {[%emt 0:00:53]} 13. Kh1 {[%emt 0:00:54]} Nf4 {[%emt 0:00:04]} 14. Rxf4 {[%emt 0:07:16]} exf4 {[%emt 0:00:09]} 15. e5 {[%emt 0:00:20]} O-O {[%emt 0:04:32]} 16. Bxf6 {[%emt 0:01:09]} Qd1 {[%emt 0:00:15]} 17. Qxd1 {[%emt 0:02:34]} Bxd1 {[%emt 0:00:02]} 18. Nc3 {[%emt 0:01:17]} Bxc2 {[%emt 0:01:14]} 19. g7 {[%emt 0:00:10]} Rfd8 {[%emt 0:00:36]} 20. Rf1 {[%emt 0:05:59]} Bg6 {[%emt 0:05:10]} 21. Rxf4 {[%emt 0:01:40]} b5 {[%emt 0:00:01]} 22. Rh4 {[%emt 0:06:07]} h5 {[%emt 0:00:45]} 23. h3 {[%emt 0:03:10]} b4 {[%emt 0:01:06]} 24. Nb5 {[%emt 0:04:01]} Rd5 {[%emt 0:01:05]} 25. Nxc7 {[%emt 0:00:51]} Rd1+ {[%emt 0:00:19]} 26. Kh2 {[%emt 0:00:06]} c3 {[%emt 0:00:20]} 27. Nxa8 {[%emt 0:12:13]} cxb2 {[%emt 0:00:54]} 28. Rc4 {[%emt 0:00:52]} Bf5 {[%emt 0:00:35]} 29. Rxb4 {[%emt 0:05:24]} b1=Q {[%emt 0:00:09]} 30. Rxb1 {[%emt 0:00:10]} Rxb1 {[%emt 0:00:47]} 31. Nc7 {[%emt 0:00:34]} Be6 {[%emt 0:01:20]} 32. a3 {[%emt 0:04:22]} Rb3 {[%emt 0:00:24]} 33. Ne8 {[%emt 0:02:18]} Bd7 {[%emt 0:01:06]} 34. Nd6 {[%emt 0:00:37]} Rxa3 {[%emt 0:00:03]} 35. Ne4 {[%emt 0:00:33]} Re3 {[%emt 0:00:29]} 36. Ng5 {[%emt 0:01:03]} a5 {[%emt 0:00:42]} 37. g4 {[%emt 0:00:57]} hxg4 {[%emt 0:00:12]} 38. h4 {[%emt 0:00:21]} g3+ {[%emt 0:00:26]} 39. Kg1 {[%emt 0:01:22]} Bc6 {[%emt 0:00:19]} 40. Kf1 {[%emt 0:01:24]} g2+ {[%emt 0:00:13]} 41. Kf2 {[%emt 0:30:46]} Re2+ {[%emt 0:31:12]} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.21"]
[White "Ondrus, Martin"]
[Black "Zelbova, Lada"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2267"]
[BlackElo "1886"]
[Annotator "ChessBase"]
[PlyCount "163"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:04]} c5 {[%emt 0:00:05]} 2. Nf3 {[%emt 0:00:04]} d6 {[%emt 0:00:08]} 3. d4 {[%emt 0:00:04]} cxd4 {[%emt 0:00:05]} 4. Nxd4 {[%emt 0:00:02]} Nf6 {[%emt 0:00:09]} 5. Nc3 {[%emt 0:00:03]} a6 {[%emt 0:00:05]} 6. Be3 {[%emt 0:00:44]} e5 {[%emt 0:00:20]} 7. Nb3 {[%emt 0:00:01]} Be6 {[%emt 0:00:31]} 8. f3 {[%emt 0:00:02]} Be7 {[%emt 0:00:34]} 9. Qd2 {[%emt 0:00:05]} O-O {[%emt 0:00:16]} 10. O-O-O {[%emt 0:00:11]} a5 {[%emt 0:00:54]} 11. Bb5 {[%emt 0:00:26]} Bd7 {[%emt 0:07:57]} 12. a4 {[%emt 0:01:28]} Nc6 {[%emt 0:03:36]} 13. g4 {[%emt 0:00:10]} Nb4 {[%emt 0:02:08]} 14. g5 {[%emt 0:00:21]} Nh5 {[%emt 0:00:40]} 15. Kb1 {[%emt 0:04:02]} Be6 {[%emt 0:05:07]} 16. h4 {[%emt 0:03:00]} Qc7 {[%emt 0:05:28]} 17. Qf2 {[%emt 0:01:49]} Nf4 {[%emt 0:23:51]} 18. Bxf4 {[%emt 0:06:48]} exf4 {[%emt 0:00:30]} 19. Nd4 {[%emt 0:00:37]} Rfd8 {[%emt 0:05:13]} 20. Rhe1 {[%emt 0:05:27]} Bf8 {[%emt 0:01:25]} 21. h5 {[%emt 0:03:37]} g6 {[%emt 0:04:15]} 22. h6 {[%emt 0:01:25]} Qc5 {[%emt 0:02:22]} 23. Qh4 {[%emt 0:01:27]} Be7 {[%emt 0:03:48]} 24. Rg1 {[%emt 0:00:06]} Nc6 {[%emt 0:00:30]} 25. Nxe6 {[%emt 0:02:23]} fxe6 {[%emt 0:00:06]} 26. Qxf4 {[%emt 0:00:32]} Rf8 {[%emt 0:01:48]} 27. Qg4 {[%emt 0:00:33]} Rf7 {[%emt 0:10:58]} 28. Qxe6 {[%emt 0:02:34]} Bxg5 {[%emt 0:01:22]} 29. Bc4 {[%emt 0:00:25]} Nd8 {[%emt 0:00:56]} 30. Qd5 {[%emt 0:00:13]} Qxd5 {[%emt 0:00:39]} 31. Bxd5 {[%emt 0:00:01]} Bxh6 {[%emt 0:00:22]} 32. Nb5 {[%emt 0:00:51]} Be3 {[%emt 0:01:33]} 33. Rg4 {[%emt 0:02:48]} Bc5 {[%emt 0:00:27]} 34. f4 {[%emt 0:01:35]} Kg7 {[%emt 0:00:45]} 35. Bxf7 {[%emt 0:00:05]} Nxf7 {[%emt 0:00:06]} 36. Nc7 {[%emt 0:02:47]} Rc8 {[%emt 0:01:23]} 37. Ne6+ {[%emt 0:00:03]} Kf6 {[%emt 0:00:12]} 38. Nxc5 {[%emt 0:00:07]} Rxc5 {[%emt 0:00:31]} 39. b3 {[%emt 0:00:53]} b6 {[%emt 0:02:17]} 40. Kb2 {[%emt 0:00:30]} Rh5 {[%emt 0:09:14]} 41. Kc3 {[%emt 0:32:48]} Ke6 {[%emt 0:32:37]} 42. Rgg1 {[%emt 0:14:37]} Rc5+ {[%emt 0:05:39]} 43. Kd3 {[%emt 0:00:15]} g5 {[%emt 0:00:00]} 44. Rdf1 {[%emt 0:00:00]} gxf4 {[%emt 0:00:00]} 45. Rxf4 {[%emt 0:00:00]} Ne5+ {[%emt 0:00:00]} 46. Kd2 {[%emt 0:00:00]} Ng6 {[%emt 0:00:00]} 47. Rfg4 {[%emt 0:00:00]} Ne5 {[%emt 0:00:00]} 48. R4g3 {[%emt 0:00:00]} h5 {[%emt 0:00:00]} 49. c4 {[%emt 0:00:00]} Ng4 {[%emt 0:00:00]} 50. Kd3 {[%emt 0:00:00]} Rg5 {[%emt 0:00:00]} 51. Kd4 {[%emt 0:00:00]} Ke7 {[%emt 0:00:00]} 52. Rh3 {[%emt 0:00:00]} Re5 {[%emt 0:00:00]} 53. Rf1 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 54. Rh4 {[%emt 0:00:00]} Ke6 {[%emt 0:00:00]} 55. Rhf4 {[%emt 0:00:00]} Nd7 {[%emt 0:00:00]} 56. Rf7 {[%emt 0:00:00]} h4 {[%emt 0:00:00]} 57. Rh7 {[%emt 0:00:00]} Nc5 {[%emt 0:00:00]} 58. Rh6+ {[%emt 0:00:00]} Ke7 {[%emt 0:00:13]} 59. Rxh4 {[%emt 0:00:00]} Nxb3+ {[%emt 0:00:09]} 60. Ke3 {[%emt 0:00:00]} Nc5 {[%emt 0:00:49]} 61. Ra1 {[%emt 0:00:00]} Ke6 {[%emt 0:03:42]} 62. Ra2 {[%emt 0:00:00]} Ke7 {[%emt 0:00:08]} 63. Kf3 {[%emt 0:00:00]} Kd7 {[%emt 0:01:05]} 64. Rf4 {[%emt 0:00:00]} Ke6 {[%emt 0:00:57]} 65. Ra3 {[%emt 0:03:34]} Rh5 {[%emt 0:01:15]} 66. Kg4 {[%emt 0:00:37]} Re5 {[%emt 0:00:18]} 67. Re3 {[%emt 0:04:17]} Nxa4 {[%emt 0:01:05]} 68. Rf5 {[%emt 0:00:07]} Nc5 {[%emt 0:01:13]} 69. Kf4 {[%emt 0:00:30]} a4 {[%emt 0:01:06]} 70. Rxe5+ {[%emt 0:00:12]} dxe5+ {[%emt 0:00:05]} 71. Kf3 {[%emt 0:00:42]} Nb3 {[%emt 0:00:53]} 72. Rd3 {[%emt 0:01:23]} Nd4+ {[%emt 0:00:31]} 73. Kg4 {[%emt 0:00:41]} b5 {[%emt 0:01:13]} 74. cxb5 {[%emt 0:00:11]} Nxb5 {[%emt 0:00:08]} 75. Rh3 {[%emt 0:01:16]} Kd6 {[%emt 0:00:51]} 76. Kf5 {[%emt 0:02:27]} a3 {[%emt 0:00:34]} 77. Rh6+ {[%emt 0:00:37]} Kc5 {[%emt 0:00:10]} 78. Kxe5 {[%emt 0:00:21]} Kb4 {[%emt 0:00:45]} 79. Ra6 {[%emt 0:03:09]} Kb3 {[%emt 0:00:12]} 80. Ra5 {[%emt 0:00:39]} Kb4 {[%emt 0:00:26]} 81. Ra8 {[%emt 0:00:26]} Kb3 {[%emt 0:00:11]} 82. Rxa3+ {[%emt 0:01:01]} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.22"]
[White "Zelba, Lukas"]
[Black "Unneland, Mathias"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1919"]
[BlackElo "2262"]
[Annotator "NA"]
[PlyCount "90"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:06]} Nf6 {[%emt 0:00:23]} 2. Nf3 {[%emt 0:00:13]} d5 {[%emt 0:00:18]} 3. Bf4 {[%emt 0:00:30]} c5 {[%emt 0:00:26]} 4. c3 {[%emt 0:00:38]} Qb6 {[%emt 0:01:14]} 5. Qb3 {[%emt 0:00:43]} c4 {[%emt 0:00:22]} 6. Qc2 {[%emt 0:00:09]} g6 {[%emt 0:02:30]} 7. Nbd2 {[%emt 0:19:30]} Bf5 {[%emt 0:00:20]} 8. Qc1 {[%emt 0:00:19]} Nc6 {[%emt 0:08:39]} 9. Be5 {[%emt 0:06:09]} Nxe5 {[%emt 0:05:48]} 10. Nxe5 {[%emt 0:05:15]} Bg7 {[%emt 0:02:12]} 11. g3 {[%emt 0:06:16]} Ne4 {[%emt 0:04:36]} 12. Nef3 {[%emt 0:17:13]} Bh6 {[%emt 0:07:27]} 13. Bg2 {[%emt 0:03:32]} O-O {[%emt 0:07:36]} 14. O-O {[%emt 0:02:04]} Qe6 {[%emt 0:11:50]} 15. Re1 {[%emt 0:06:05]} Bh3 {[%emt 0:07:38]} 16. Qc2 {[%emt 0:05:15]} Bf5 {[%emt 0:03:32]} 17. Qd1 {[%emt 0:02:45]} Rfd8 {[%emt 0:02:05]} 18. e3 {[%emt 0:03:16]} Nf6 {[%emt 0:05:23]} 19. Ne5 {[%emt 0:04:18]} Qb6 {[%emt 0:06:41]} 20. b3 {[%emt 0:02:44]} cxb3 {[%emt 0:00:30]} 21. axb3 {[%emt 0:00:02]} Nd7 {[%emt 0:01:46]} 22. Nxd7 {[%emt 0:05:07]} Rxd7 {[%emt 0:00:07]} 23. g4 {[%emt 0:00:39]} Be6 {[%emt 0:02:32]} 24. f4 {[%emt 0:00:24]} Rc8 {[%emt 0:01:16]} 25. Rc1 {[%emt 0:00:58]} Rdc7 {[%emt 0:00:40]} 26. Nb1 {[%emt 0:03:00]} Qd6 {[%emt 0:01:37]} 27. Qf3 {[%emt 0:01:29]} Qd7 {[%emt 0:01:29]} 28. h3 {[%emt 0:00:39]} a5 {[%emt 0:02:16]} 29. Rcd1 {[%emt 0:02:09]} f6 {[%emt 0:00:49]} 30. Bf1 {[%emt 0:02:26]} Qd6 {[%emt 0:01:18]} 31. c4 {[%emt 0:00:19]} dxc4 {[%emt 0:01:06]} 32. d5 {[%emt 0:00:03]} Bd7 {[%emt 0:01:01]} 33. bxc4 {[%emt 0:01:01]} b5 {[%emt 0:00:21]} 34. cxb5 {[%emt 0:00:25]} Rb8 {[%emt 0:00:26]} 35. h4 {[%emt 0:00:28]} Bxb5 {[%emt 0:00:41]} 36. g5 {[%emt 0:00:32]} Bg7 {[%emt 0:00:37]} 37. Bh3 {[%emt 0:00:59]} f5 {[%emt 0:04:40]} 38. e4 {[%emt 0:00:53]} fxe4 {[%emt 0:00:23]} 39. Qxe4 {[%emt 0:00:16]} Kh8 {[%emt 0:01:21]} 40. Rd2 {[%emt 0:00:49]} Rc4 {[%emt 0:02:08]} 41. Qxe7 {[%emt 0:07:50]} Qxf4 {[%emt 0:01:42]} 42. Rf1 {[%emt 0:05:01]} Bd4+ {[%emt 0:01:10]} 43. Kh1 {[%emt 0:02:35]} Bc5 {[%emt 0:04:11]} 44. Qf6+ {[%emt 0:09:10]} Qxf6 {[%emt 0:00:08]} 45. Rxf6 {[%emt 0:00:44]} Rc1+ {[%emt 0:00:37]} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.23"]
[White "Macicek, Jakub"]
[Black "Rousek, Jan"]
[Result "0-1"]
[ECO "D85"]
[WhiteElo "2250"]
[BlackElo "1908"]
[Annotator "TA"]
[PlyCount "134"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,133,3,0,0,0,12,10,29,26,47,43,48,47,52,12,14,0,0,0,19,12,127,89,100,49,50,27,193,199,191,191,327,318,437,437,569,291,300,300,296,295,298,294,260,293,276,288,304,300,350,345,401,403,426,410,412,410,468,472,421,431,391,339,558,509,587,568,593,578,617,603,586,559,781,765,1039,913,738,475,472,460,482,405,1608,1647,1662,1716,1741,1633,1130,1512,1600,1537,1586,1417,1552,1537,1444,1361,29969,29969,29969,29970,29980,29978,29981,29981,6633,0,0,0,0,-29996,-29997,-29997,-29998,-29998,-29999,-29999]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Bd2 Bg7 6. e4 Nxc3 7. Bxc3 O-O 8. Nf3 c5 9. d5 e6 {D90: Grünfeld: 4 Nf3 Bg7 sidelines.} 10. Bc4 Bxc3+ 11. bxc3 exd5 {The position is equal.} 12. Bxd5 Qc7 {[#]} 13. Qd2 $146 (13. h4 $5 {[%cal Rh4h5]}) ({Predecessor:} 13. O-O Nc6 14. h3 b6 15. Qd2 Kg7 16. Rfd1 Bb7 17. c4 Rae8 18. Qc3+ f6 19. Rd2 {½-½ (86) Ioannidis,E (2411)-Ali,M (2399) Tornelo INT 2021}) 13... Kg7 {Prevents Qh6+.} 14. h4 h5 $1 15. Ng5 Nc6 16. O-O f6 17. Nf3 $36 {[%mdl 2048] White fights for an advantage.} b6 18. e5 Ba6 (18... fxe5 $11 19. Bxc6 Qxc6) 19. exf6+ $1 $16 Rxf6 {aiming for ...Rd8.} 20. Rfd1 (20. c4 $16) 20... Rd8 $14 21. Qe3 (21. Qe1 $5 {[%cal Rd5c6]} Bc8 22. Bxc6 Rxc6 23. Rxd8 Qxd8 24. Qe5+ Qf6 25. Qb8 $14) 21... Rfd6 $2 {[#]} (21... Bc8 $11 {and Black has nothing to worry.}) 22. Ng5 $1 $18 {[%cal Od1e1] Strongly threatening Re1!} Bc8 (22... Be2 $2 23. Qxe2 Qe7 24. Qxe7+ Nxe7 25. Ne6+ Kf6 26. Nxd8 Nxd5 27. Nc6 $1 $18 {[%mdl 512]}) 23. c4 {Hoping for Re1.} Rf6 {[#]} (23... Qe7 $142) 24. Re1 $1 Rdf8 25. Re2 Qd6 26. Bxc6 Qxc6 27. Qe7+ R6f7 28. Nxf7 Rxf7 29. Qe5+ Qf6 30. Rae1 Qxe5 31. Rxe5 {[%mdl 4096] Endgame KRR-KRB} Kf6 32. f3 Rd7 33. Rd5 {Inhibits Rd2.} Rc7 34. Rd6+ Kf7 35. Kf2 Bd7 36. Re5 Bf5 37. Ke3 Bb1 38. a3 {[%cal Ba2a3,Ba3a4,Ba4a5,Ba5a6][%mdl 32]} Ba2 39. Kd3 Bb1+ $2 (39... Re7 {was necessary.}) 40. Kc3 Bf5 41. a4 Rb7 42. a5 Bc8 43. Rg5 Be6 44. a6 Rc7 45. g4 hxg4 46. fxg4 Kf6 47. Rd8 Rh7 48. Rf8+ Kg7 49. Re8 Kf7 {[#]} (49... Bf7 $142) 50. Rxe6 $1 {[%mdl 512]} Kxe6 51. Rxg6+ {KR-KR} Ke5 52. h5 Rf7 53. h6 Rf3+ 54. Kd2 Rh3 55. g5 {[%cal Bg4g5,Bg5g6,Bg6g7][%mdl 32]} Kd4 56. Rd6+ Kxc4 {[#]} 57. Rxb6 $3 {[%mdl 512]} axb6 {KR-K3P} (57... Rh5 58. Rg6) 58. a7 Rd3+ 59. Kc2 Rd8 60. g6 b5 61. g7 b4 62. h7 $2 ({Better is} 62. a8=R $18 b3+ 63. Kb1 Rd1+ 64. Kb2 Rd2+ 65. Kc1) 62... b3+ $11 {[%cal Bb4b3,Bb3b2][%mdl 32]} 63. Kb2 $1 Rd2+ 64. Kc1 $2 {[%mdl 8192]} (64. Kb1 $11 Kc3 65. Kc1 b2+ 66. Kb1 Rd1+ 67. Ka2 Ra1#) 64... Kc3 {Black mates.} 65. h8=Q b2+ 66. Kb1 Rd1+ 67. Ka2 Ra1# {Weighted Error Value: White=0.15 (very precise) /Black=0.51} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.07"]
[Round "1.24"]
[White "Sinervuo, Veli-Pekka"]
[Black "Dev, Shah"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "1892"]
[BlackElo "2243"]
[Annotator "ChessBase"]
[PlyCount "38"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:06]} e5 {[%emt 0:00:18]} 2. Nf3 {[%emt 0:00:13]} Nc6 {[%emt 0:00:05]} 3. Bc4 {[%emt 0:00:28]} Bc5 {[%emt 0:00:07]} 4. O-O {[%emt 0:01:32]} Nf6 {[%emt 0:00:05]} 5. d3 {[%emt 0:00:09]} h6 {[%emt 0:00:09]} 6. c3 {[%emt 0:00:43]} d6 {[%emt 0:00:06]} 7. Nbd2 {[%emt 0:02:56]} O-O {[%emt 0:00:14]} 8. b4 {[%emt 0:00:33]} Bb6 {[%emt 0:00:06]} 9. Bb3 {[%emt 0:01:00]} a6 {[%emt 0:03:04]} 10. Nc4 {[%emt 0:00:31]} Ba7 {[%emt 0:00:06]} 11. Ne3 {[%emt 0:06:30]} Ne7 {[%emt 0:02:07]} 12. Bc2 {[%emt 0:05:35]} Bxe3 {[%emt 0:03:22]} 13. Bxe3 {[%emt 0:01:21]} Bg4 {[%emt 0:02:25]} 14. h3 {[%emt 0:08:08]} Bh5 {[%emt 0:00:10]} 15. g3 Qd7 {[%emt 0:25:37]} 16. Kg2 {[%emt 0:04:19]} Ng6 {[%emt 0:08:54]} 17. Rh1 {[%emt 0:14:22]} d5 {[%emt 0:02:44]} 18. Qd2 {[%emt 0:06:42]} Rad8 {[%emt 0:02:19]} 19. Rad1 Qc6 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.1"]
[White "Schouten, Mathias Lind"]
[Black "Urkedal, Frode Olav Olsen"]
[Result "0-1"]
[ECO "C56"]
[WhiteElo "2165"]
[BlackElo "2553"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,102,-20,-104,-60,-58,-63,-72,-58,-62,-60,-58,-68,-65,-50,-69,-27,-81,-80,-74,-65,-68,-66,-81,-81,-87,-88,-81,-83,-124,-124,-135,-111,-176,-143,-174,-173,-174,-152,-144,-119,-125,-127,-129,-125,-131,-127,-151,-88,-82,-83,-84,-16,-8,-6,-6,-5,-16,0,-23,-20,-20,-20,-20,-24,-29,-17,-20,-23,-184,-184,-170,-154,-170,-164,-658,-649,-1018,-1041,-1384,-1130,-2948,-2475,-12848,-12850,-29973,-29974,-6095,-5373,-29981,-29982,-29983,-29980,-29979,-29980]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. O-O Nxe4 6. Nc3 Nxc3 {C56: Two Knights: 4 d4 exd4 5 0-0 Nxe4.} (6... dxc3 $17 7. Bxf7+ Kxf7 8. Qd5+ Kf6 9. Qxe4 Be7) 7. bxc3 Be7 {Prevents Ng5.} 8. cxd4 d5 {Black is better.} 9. Bb5 O-O 10. Bxc6 bxc6 11. Ne5 Bd7 {[#]} 12. Qf3 $146 ({Predecessor:} 12. Qd3 f6 13. Nxd7 Qxd7 14. Re1 Bd6 15. c4 Rfe8 16. Be3 Re4 17. c5 Bf8 18. Rab1 {0-1 (33) Sliwicki,D (2169)-Krivonosov,O (2371) Chess.com INT 2021}) 12... Be8 (12... f6 $15 13. Nxd7 Qxd7) 13. Re1 (13. Qc3 $11) 13... f6 $17 14. Nd3 Bd6 15. Bf4 Qd7 16. Rab1 Bg6 17. Rb3 Rae8 18. Rxe8 Rxe8 19. Be3 ({White should try} 19. h3) 19... Qc8 20. Qd1 a5 {[%cal Ba7a5,Ba5a4][%mdl 32]} 21. Qb1 (21. a4 $17 {was necessary.}) 21... Qg4 22. h3 Qe2 23. Qc1 a4 24. Rc3 Rb8 {Black is much more active.} 25. Bf4 Bxd3 26. Bxd6 cxd6 27. Rxd3 {[%mdl 4096] Endgame KQR-KQR} Re8 28. Rc3 c5 (28... Re4 $142 $1 29. Re3 (29. Rxc6 $2 Rxd4 30. Qe3 Rd1+ 31. Kh2 Qxe3 $19) 29... Qc4) 29. dxc5 d4 30. Ra3 Qe1+ ({Black should play} 30... dxc5 $17 {And now ...Qe1+ would win.} 31. Rxa4 Qe4) 31. Qxe1 $11 Rxe1+ {KR-KR} 32. Kh2 dxc5 33. Rxa4 g5 34. Rc4 Re5 35. a4 Kf7 {Strongly threatening ...Ke7.} 36. a5 Ke6 {...Kd6 is the strong threat.} 37. a6 Kd5 38. Ra4 Re8 {Hoping for ...Kc6.} 39. a7 $2 {Now White is beyond hope.} (39. Ra3 $11 {and White stays safe.}) 39... Ra8 $19 40. Ra6 {[#]} Kc4 $1 41. Kg3 {[#]} Kb5 $1 42. Rxf6 (42. Ra1) 42... Rxa7 {White must now prevent ...Ra2.} 43. Rf5 Ra2 44. Rxg5 Rxc2 45. f4 d3 46. Kf3 Re2 47. Rd5 Kc4 48. Rd7 Kc3 {( -> ...Re1)} 49. f5 Re1 {Black mates.} 50. f6 d2 51. f7 d1=Q+ {Weighted Error Value: White=0.92/Black=0.10 (very precise)} ({Not} 51... Rf1+ 52. Ke2 d1=R 53. Rxd1 Rxf7 54. Rc1+ Kd4 55. Rd1+ Ke4 56. Rd6 $11) 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.2"]
[White "Pijpers, Arthur"]
[Black "Cornelisse, John"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2485"]
[BlackElo "2173"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,74,31,6,-14,18,39,64,59,64,51,110,96,114,108,114,114,130,106,108,102,133,127,136,135,135,114,127,133,152,107,184,189,188,185,327,305,312,263,260,264,356,386,383,307,422,401,454,443,451,447,6503,1027,1881,1815,1757,1620,29968,29970,6084,5493,29992,29992,29997,29998,29998,29999,29999]} 1. e4 c6 2. d4 d5 3. e5 c5 4. Nf3 Nc6 5. dxc5 Bg4 6. b4 {B12: Caro-Kann: Advance Variation.} e6 {[%mdl 1024] Black has compensation.} 7. Bb5 Qc7 8. Nbd2 {White is slightly better.} Nge7 9. O-O {[#]} (9. h3 $5 {[%cal Rh3g4]} Bxf3 10. Nxf3 $16) 9... Ng6 $146 (9... a6 $14 10. Ba4 O-O-O) ({Predecessor:} 9... O-O-O 10. Rb1 Nxe5 11. Re1 N7c6 12. Bxc6 Nxc6 13. h3 Bh5 14. Bb2 Rg8 15. a3 Be7 {1-0 (58) Becker,M (2275)-Goeldenboog,J (1945) Magdeburg 2020}) 10. Re1 Be7 11. h3 Bxf3 12. Nxf3 O-O 13. Bxc6 bxc6 14. Bb2 Rab8 15. Bc3 Rbe8 16. Qd2 Qd7 17. Re2 Bd8 18. Rae1 {White is more active.} Bc7 19. Qg5 (19. Nd4 $142) 19... f6 (19... a5 $16) 20. exf6 $18 gxf6 21. Qg4 {[%cal Re2e6]} ({Inferior is} 21. Bxf6 Bf4 22. Qg4 (22. Ne5 Qc7 $17) 22... Rxf6 $17) 21... f5 (21... Kf7 {was necessary.} 22. g3 Re7) 22. Qh5 Bd8 23. Ne5 Nxe5 24. Bxe5 {Strongly threatening Qh6.} (24. Rxe5 Bf6 $16) 24... Qf7 25. Qf3 Qg6 26. Re3 f4 27. Ra3 Rf7 28. Ra6 Qxc2 29. Rxc6 Qd2 (29... Bg5 $142 30. Bc3 Bf6 31. Bxf6 (31. Rexe6 Rxe6 32. Qg4+ Kf8 $18) 31... Rxf6) 30. Bc3 (30. Qg4+ $142 Kf8 31. Bd6+ Ree7 32. Rxe6 Qc1+ 33. Kh2 f3 34. Rc8 Ke8 35. c6) 30... Qxa2 31. Rcxe6 Rxe6 32. Rxe6 Kf8 {Prevents Re8+.} 33. Qh5 Qb1+ 34. Kh2 {[#] Intending Qh6+ and mate.} Be7 35. Qe5 {[%cal Re5h8] White mates.} Ke8 36. Qb8+ Kd7 37. c6+ Kxe6 38. Qe5# {Black did not feel at home in the position after the opening.  Weighted Error Value: White=0.11 (very precise) /Black=0.70} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.3"]
[White "Sindler, Michal"]
[Black "Mirzoev, Azer"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2138"]
[BlackElo "2420"]
[Annotator "ChessBase"]
[PlyCount "106"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:05:29]} c6 {[%emt 0:00:07]} 2. d4 {[%emt 0:00:34]} d5 {[%emt 0:00:28]} 3. exd5 {[%emt 0:00:17]} cxd5 {[%emt 0:00:04]} 4. Bd3 {[%emt 0:00:15]} Nc6 {[%emt 0:00:06]} 5. c3 {[%emt 0:00:21]} Nf6 {[%emt 0:00:06]} 6. Bf4 {[%emt 0:00:27]} Bg4 {[%emt 0:00:06]} 7. Qb3 {[%emt 0:00:13]} Qc8 {[%emt 0:00:07]} 8. Nd2 {[%emt 0:00:29]} e6 {[%emt 0:00:07]} 9. Ngf3 {[%emt 0:01:33]} Bh5 {[%emt 0:00:10]} 10. Ne5 {[%emt 0:04:42]} Nxe5 {[%emt 0:05:26]} 11. Bxe5 {[%emt 0:00:54]} Bg6 {[%emt 0:04:23]} 12. Bxg6 {[%emt 0:01:15]} hxg6 {[%emt 0:00:10]} 13. O-O {[%emt 0:00:35]} Qd7 {[%emt 0:07:31]} 14. Qd1 {[%emt 0:13:19]} Be7 {[%emt 0:01:05]} 15. a3 {[%emt 0:08:48]} O-O {[%emt 0:00:22]} 16. g4 {[%emt 0:01:16]} Rfc8 {[%emt 0:01:57]} 17. Kg2 {[%emt 0:10:55]} Qb5 {[%emt 0:07:40]} 18. Rb1 {[%emt 0:02:43]} Qd3 {[%emt 0:00:10]} 19. Bxf6 {[%emt 0:10:13]} gxf6 {[%emt 0:02:16]} 20. f4 {[%emt 0:01:39]} Kg7 {[%emt 0:01:27]} 21. Rf3 {[%emt 0:03:10]} Qb5 {[%emt 0:00:12]} 22. f5 {[%emt 0:02:22]} exf5 {[%emt 0:02:41]} 23. gxf5 {[%emt 0:00:14]} Rh8 {[%emt 0:00:09]} 24. fxg6 {[%emt 0:06:04]} fxg6 {[%emt 0:00:07]} 25. Nf1 {[%emt 0:00:22]} Bd6 {[%emt 0:01:21]} 26. h3 {[%emt 0:03:39]} Rae8 {[%emt 0:03:08]} 27. Ne3 {[%emt 0:04:25]} Rh5 {[%emt 0:01:18]} 28. Qc2 {[%emt 0:04:22]} Rg5+ {[%emt 0:02:23]} 29. Kh1 {[%emt 0:00:32]} f5 {[%emt 0:18:26]} 30. Nxf5+ {[%emt 0:08:02]} gxf5 {[%emt 0:00:34]} 31. Rxf5 {[%emt 0:00:22]} Rg6 {[%emt 0:00:50]} 32. Rbf1 {[%emt 0:01:00]} Re7 {[%emt 0:08:00]} 33. Rf8 {[%emt 0:01:37]} Qd7 {[%emt 0:09:17]} 34. Rg8+ {[%emt 0:01:07]} Kxg8 {[%emt 0:00:06]} 35. Qxg6+ {[%emt 0:00:10]} Rg7 {[%emt 0:00:06]} 36. Qh5 {[%emt 0:00:27]} Qe6 {[%emt 0:00:38]} 37. Qf5 {[%emt 0:01:16]} Qe4+ {[%emt 0:06:56]} 38. Qxe4 {[%emt 0:00:51]} dxe4 {[%emt 0:00:05]} 39. Re1 {[%emt 0:00:09]} Re7 {[%emt 0:00:05]} 40. Kg2 {[%emt 0:00:58]} Kf7 {[%emt 0:00:43]} 41. c4 {[%emt 0:30:55]} Kf6 {[%emt 0:30:19]} 42. Kf2 {[%emt 0:02:06]} Bf4 {[%emt 0:00:27]} 43. Ke2 {[%emt 0:00:26]} Rg7 {[%emt 0:00:17]} 44. Kd1 {[%emt 0:00:42]} Kf5 {[%emt 0:00:05]} 45. Re2 {[%emt 0:00:21]} Rg3 {[%emt 0:00:28]} 46. Kc2 {[%emt 0:00:39]} Rxh3 {[%emt 0:00:07]} 47. d5 {[%emt 0:00:22]} b6 {[%emt 0:00:42]} 48. b3 {[%emt 0:01:04]} Rh2 {[%emt 0:00:16]} 49. Rxh2 {[%emt 0:00:00]} Bxh2 {[%emt 0:00:00]} 50. b4 {[%emt 0:00:00]} Bd6 {[%emt 0:00:00]} 51. Kd2 {[%emt 0:00:00]} Kf4 {[%emt 0:00:00]} 52. Ke2 {[%emt 0:00:00]} Ke5 {[%emt 0:00:00]} 53. Ke3 {[%emt 0:00:00]} Be7 {[%emt 0:00:00]} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.4"]
[White "Neuman, Petr"]
[Black "Melaa, Sondre"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2402"]
[BlackElo "2169"]
[Annotator "ChessBase"]
[PlyCount "67"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. Nf3 {[%emt 0:00:06]} d5 {[%emt 0:00:37]} 2. g3 {[%emt 0:00:07]} Nf6 {[%emt 0:00:52]} 3. Bg2 {[%emt 0:01:49]} e6 {[%emt 0:00:46]} 4. c4 {[%emt 0:01:28]} dxc4 {[%emt 0:00:34]} 5. Na3 {[%emt 0:00:22]} Bxa3 {[%emt 0:03:40]} 6. bxa3 {[%emt 0:00:47]} O-O {[%emt 0:01:14]} 7. Bb2 {[%emt 0:07:34]} c5 {[%emt 0:09:25]} 8. Qc2 {[%emt 0:01:17]} Nd5 {[%emt 0:03:20]} 9. Qxc4 {[%emt 0:17:58]} b6 {[%emt 0:03:39]} 10. O-O {[%emt 0:00:57]} Nd7 {[%emt 0:09:05]} 11. e4 {[%emt 0:23:11]} N5f6 {[%emt 0:02:49]} 12. d3 {[%emt 0:03:37]} Bb7 {[%emt 0:03:45]} 13. Rad1 {[%emt 0:01:59]} Qe7 {[%emt 0:05:20]} 14. h3 {[%emt 0:01:58]} Rac8 {[%emt 0:02:38]} 15. Nd2 {[%emt 0:02:38]} e5 {[%emt 0:09:31]} 16. f4 {[%emt 0:02:46]} Ne8 {[%emt 0:06:22]} 17. Qc3 {[%emt 0:06:36]} Nd6 {[%emt 0:03:52]} 18. a4 {[%emt 0:03:02]} f6 {[%emt 0:02:59]} 19. Bf3 {[%emt 0:03:44]} Kh8 {[%emt 0:04:08]} 20. Bg4 {[%emt 0:01:18]} exf4 {[%emt 0:03:03]} 21. gxf4 {[%emt 0:00:11]} f5 {[%emt 0:01:36]} 22. Bf3 {[%emt 0:03:48]} fxe4 {[%emt 0:00:41]} 23. dxe4 {[%emt 0:00:38]} Rxf4 {[%emt 0:02:13]} 24. Bg2 {[%emt 0:00:06]} Rff8 {[%emt 0:07:27]} 25. Qg3 {[%emt 0:01:21]} Ba6 {[%emt 0:04:31]} 26. Rfe1 {[%emt 0:01:46]} Rcd8 {[%emt 0:02:02]} 27. Nf3 {[%emt 0:00:57]} Nc4 {[%emt 0:01:34]} 28. Ba1 {[%emt 0:00:09]} Nf6 {[%emt 0:01:29]} 29. Nh4 {[%emt 0:00:09]} Nh5 {[%emt 0:02:30]} 30. Qg4 {[%emt 0:00:15]} Rxd1 {[%emt 0:02:14]} 31. Rxd1 {[%emt 0:00:06]} Qf7 {[%emt 0:01:08]} 32. Rd7 {[%emt 0:01:27]} Qf2+ {[%emt 0:00:42]} 33. Kh2 {[%emt 0:00:06]} Nf6 {[%emt 0:00:39]} 34. Qxg7# 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.5"]
[White "Bodicky, Michal"]
[Black "Haring, Filip"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "2137"]
[BlackElo "2398"]
[Annotator "ChessBase"]
[PlyCount "88"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. c4 {[%emt 0:00:08]} e5 {[%emt 0:00:15]} 2. Nc3 {[%emt 0:00:09]} Bb4 {[%emt 0:00:09]} 3. Qc2 {[%emt 0:03:15]} Nf6 {[%emt 0:01:20]} 4. g3 {[%emt 0:02:37]} O-O {[%emt 0:00:51]} 5. Bg2 {[%emt 0:01:03]} c6 {[%emt 0:02:05]} 6. a3 {[%emt 0:04:36]} Ba5 {[%emt 0:04:03]} 7. Nf3 {[%emt 0:05:26]} Re8 {[%emt 0:05:27]} 8. O-O {[%emt 0:03:34]} e4 {[%emt 0:03:46]} 9. Ne1 {[%emt 0:02:25]} d5 {[%emt 0:01:21]} 10. cxd5 {[%emt 0:05:25]} cxd5 {[%emt 0:00:47]} 11. d3 {[%emt 0:02:04]} Nc6 {[%emt 0:08:13]} 12. b4 {[%emt 0:06:18]} Bb6 {[%emt 0:01:22]} 13. Bg5 {[%emt 0:08:13]} h6 {[%emt 0:00:49]} 14. Bxf6 {[%emt 0:00:29]} Qxf6 {[%emt 0:00:06]} 15. dxe4 {[%emt 0:01:41]} Nd4 {[%emt 0:09:21]} 16. Qd1 {[%emt 0:06:09]} dxe4 {[%emt 0:08:51]} 17. Nxe4 {[%emt 0:04:37]} Rxe4 {[%emt 0:03:12]} 18. Bxe4 {[%emt 0:00:26]} Nxe2+ {[%emt 0:00:49]} 19. Qxe2 {[%emt 0:00:15]} Qxa1 {[%emt 0:00:04]} 20. Qf3 {[%emt 0:02:22]} Be6 {[%emt 0:05:19]} 21. Ng2 {[%emt 0:02:37]} Qb2 {[%emt 0:05:56]} 22. Nf4 {[%emt 0:07:03]} Bc4 {[%emt 0:00:46]} 23. Rb1 {[%emt 0:07:04]} Qa2 {[%emt 0:02:01]} 24. Rc1 {[%emt 0:00:01]} Rd8 {[%emt 0:06:24]} 25. Bb1 {[%emt 0:03:32]} Qb3 {[%emt 0:06:08]} 26. Qxb3 {[%emt 0:04:29]} Bxb3 {[%emt 0:00:05]} 27. Be4 {[%emt 0:00:20]} g6 {[%emt 0:07:21]} 28. Rc3 {[%emt 0:03:03]} Ba2 {[%emt 0:04:35]} 29. Rd3 {[%emt 0:06:36]} Re8 {[%emt 0:00:59]} 30. Bxb7 {[%emt 0:01:18]} Re1+ {[%emt 0:00:40]} 31. Kg2 {[%emt 0:00:12]} g5 {[%emt 0:04:04]} 32. Nd5 {[%emt 0:01:07]} Bc4 {[%emt 0:00:58]} 33. Rd2 {[%emt 0:00:02]} Ra1 {[%emt 0:03:36]} 34. Nxb6 {[%emt 0:02:25]} Bf1+ {[%emt 0:00:04]} 35. Kf3 {[%emt 0:00:20]} axb6 {[%emt 0:00:32]} 36. Rd8+ {[%emt 0:01:13]} Kg7 {[%emt 0:00:12]} 37. Ra8 {[%emt 0:01:15]} Rc1 {[%emt 0:03:07]} 38. Rc8 {[%emt 0:01:17]} Re1 {[%emt 0:01:32]} 39. Rc2 {[%emt 0:02:02]} h5 {[%emt 0:01:01]} 40. h4 {[%emt 0:01:23]} Re7 {[%emt 0:01:46]} 41. Be4 {[%emt 0:31:44]} f6 {[%emt 0:05:09]} 42. Rc6 {[%emt 0:00:00]} g4+ {[%emt 0:00:15]} 43. Kf4 {[%emt 0:00:00]} Rxe4+ {[%emt 0:00:07]} 44. Kf5 {[%emt 0:00:00]} Bd3 {[%emt 0:00:49]} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.6"]
[White "Jurcik, Marian"]
[Black "Eriksson, Christian Altenburg"]
[Result "1-0"]
[ECO "B24"]
[WhiteElo "2397"]
[BlackElo "2145"]
[Annotator "RC"]
[PlyCount "79"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:10:45]} c5 {[%emt 0:00:13]} 2. Nc3 {[%emt 0:00:35]} Nc6 {[%emt 0:00:25]} 3. Bb5 {[%emt 0:00:42]} Nd4 {[%emt 0:03:50]} 4. Nf3 {[%emt 0:00:47]} a6 {[%emt 0:03:24]} 5. Bd3 {[%emt 0:04:14]} e6 {[%emt 0:04:30]} 6. O-O {[%emt 0:01:23]} Qc7 {[%emt 0:02:52]} 7. Nxd4 {[%emt 0:06:47]} cxd4 {[%emt 0:00:08]} 8. Ne2 {[%emt 0:00:05]} Bc5 {[%emt 0:03:33]} 9. a3 {[%emt 0:01:29]} Ne7 {[%emt 0:03:46]} 10. b4 {[%emt 0:00:33]} Ba7 {[%emt 0:03:02]} 11. Bb2 {[%emt 0:04:00]} Nc6 {[%emt 0:06:28]} 12. f4 {[%emt 0:11:17]} d6 {[%emt 0:08:38]} 13. Kh1 {[%emt 0:09:24]} b5 {[%emt 0:08:15]} 14. c3 {[%emt 0:05:28]} dxc3 {[%emt 0:03:17]} 15. Bxc3 {[%emt 0:00:19]} e5 {[%emt 0:04:06]} 16. Ng3 {[%emt 0:07:45]} Qe7 {[%emt 0:07:47]} 17. a4 {[%emt 0:02:00]} Rb8 {[%emt 0:06:44]} 18. axb5 {[%emt 0:03:20]} axb5 {[%emt 0:00:14]} 19. f5 {[%emt 0:05:28]} f6 {[%emt 0:06:08]} 20. Qh5+ {[%emt 0:03:18]} Qf7 {[%emt 0:02:11]} 21. Bc2 {[%emt 0:05:44]} Bb6 {[%emt 0:06:30]} 22. Bb3 {[%emt 0:00:37]} Qxh5 {[%emt 0:01:19]} 23. Nxh5 {[%emt 0:00:01]} Kf8 {[%emt 0:00:16]} 24. Rfc1 {[%emt 0:04:21]} Ne7 {[%emt 0:02:26]} 25. d4 {[%emt 0:03:47]} exd4 {[%emt 0:02:58]} 26. Bd2 {[%emt 0:00:20]} Bb7 {[%emt 0:02:10]} 27. Bf4 {[%emt 0:02:38]} Rd8 {[%emt 0:00:37]} 28. Re1 {[%emt 0:01:14]} Nc8 {[%emt 0:02:19]} 29. Bg3 {[%emt 0:00:56]} d3 {[%emt 0:04:38]} 30. Rad1 {[%emt 0:00:58]} Bd4 {[%emt 0:01:02]} 31. Rxd3 {[%emt 0:00:36]} Be5 {[%emt 0:00:33]} 32. Bxe5 {[%emt 0:01:25]} fxe5 {[%emt 0:00:02]} 33. Rc3 {[%emt 0:01:20]} Ne7 {[%emt 0:02:00]} 34. Rc7 {[%emt 0:00:37]} Bc6 {[%emt 0:00:34]} 35. Be6 {[%emt 0:01:37]} d5 {[%emt 0:00:24]} 36. f6 {[%emt 0:01:03]} gxf6 {[%emt 0:00:18]} 37. Rf1 {[%emt 0:00:08]} f5 {[%emt 0:00:21]} 38. Rxf5+ {[%emt 0:00:26]} Nxf5 {[%emt 0:00:29]} 39. Rf7+ {[%emt 0:00:06]} Ke8 {[%emt 0:00:06]} 40. Nf6# 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.7"]
[White "Blahynka, Martin"]
[Black "Soucek, Petr"]
[Result "1-0"]
[ECO "E71"]
[WhiteElo "2399"]
[BlackElo "2117"]
[Annotator "ChessBase"]
[PlyCount "75"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. c4 {[%emt 0:00:07]} d6 {[%emt 0:02:13]} 2. Nc3 {[%emt 0:00:43]} Nf6 {[%emt 0:00:07]} 3. d4 {[%emt 0:00:32]} g6 {[%emt 0:00:18]} 4. e4 {[%emt 0:00:14]} Bg7 {[%emt 0:00:10]} 5. h3 {[%emt 0:00:12]} O-O {[%emt 0:00:58]} 6. Be3 {[%emt 0:00:04]} e5 {[%emt 0:02:44]} 7. d5 {[%emt 0:00:54]} Na6 {[%emt 0:08:19]} 8. g4 {[%emt 0:00:09]} Nc5 {[%emt 0:01:06]} 9. f3 {[%emt 0:00:09]} c6 {[%emt 0:05:46]} 10. h4 {[%emt 0:06:22]} cxd5 {[%emt 0:02:05]} 11. cxd5 {[%emt 0:00:06]} Bd7 {[%emt 0:11:17]} 12. h5 {[%emt 0:05:47]} Qa5 {[%emt 0:03:13]} 13. h6 {[%emt 0:25:37]} Bh8 {[%emt 0:00:13]} 14. Bd3 {[%emt 0:05:19]} b5 {[%emt 0:10:08]} 15. a3 {[%emt 0:05:15]} b4 {[%emt 0:03:39]} 16. axb4 {[%emt 0:00:04]} Nxd3+ {[%emt 0:01:01]} 17. Kf1 {[%emt 0:02:29]} Qxb4 {[%emt 0:04:57]} 18. Qxd3 {[%emt 0:00:11]} Rfc8 {[%emt 0:10:56]} 19. Nge2 {[%emt 0:03:04]} a5 {[%emt 0:05:23]} 20. Kf2 {[%emt 0:05:53]} Ne8 {[%emt 0:02:52]} 21. Ra2 {[%emt 0:04:58]} Bf6 {[%emt 0:01:17]} 22. Rha1 {[%emt 0:00:39]} Bd8 {[%emt 0:00:52]} 23. Kg3 {[%emt 0:01:57]} Bb6 {[%emt 0:06:00]} 24. Bd2 {[%emt 0:07:23]} Qc5 {[%emt 0:02:23]} 25. Be1 {[%emt 0:01:15]} Bd8 {[%emt 0:03:45]} 26. Bd2 {[%emt 0:10:32]} Bb6 {[%emt 0:00:18]} 27. Be1 {[%emt 0:04:28]} Bd8 {[%emt 0:00:07]} 28. Kg2 {[%emt 0:01:09]} Rcb8 {[%emt 0:05:14]} 29. Bf2 {[%emt 0:01:32]} Qb4 {[%emt 0:00:10]} 30. Be3 {[%emt 0:00:52]} Bb6 {[%emt 0:00:32]} 31. Nc1 {[%emt 0:06:44]} Nc7 {[%emt 0:02:28]} 32. Qd2 {[%emt 0:00:52]} a4 {[%emt 0:03:47]} 33. Bxb6 {[%emt 0:00:14]} Rxb6 {[%emt 0:01:15]} 34. Nd3 {[%emt 0:01:10]} Qd4 {[%emt 0:00:32]} 35. Ne2 {[%emt 0:00:24]} Qc4 {[%emt 0:00:06]} 36. Rc1 {[%emt 0:00:35]} Qxa2 {[%emt 0:00:07]} 37. Rxc7 {[%emt 0:00:05]} Bb5 {[%emt 0:00:24]} 38. Qg5 {[%emt 0:00:18]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.8"]
[White "Hlavina, Matous"]
[Black "Fus, Jakub"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2125"]
[BlackElo "2384"]
[Annotator "ChessBase"]
[PlyCount "112"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:02]} c6 {[%emt 0:04:42]} 2. d4 {[%emt 0:00:02]} d5 {[%emt 0:00:21]} 3. exd5 {[%emt 0:00:11]} cxd5 {[%emt 0:00:17]} 4. Bd3 {[%emt 0:00:06]} Nc6 {[%emt 0:04:04]} 5. c3 {[%emt 0:00:06]} Qc7 {[%emt 0:05:06]} 6. Ne2 {[%emt 0:03:49]} Bg4 {[%emt 0:00:29]} 7. O-O {[%emt 0:00:10]} Nf6 {[%emt 0:00:51]} 8. Qe1 {[%emt 0:00:27]} Qc8 {[%emt 0:00:13]} 9. Bf4 {[%emt 0:03:25]} Bf5 {[%emt 0:01:32]} 10. Nc1 {[%emt 0:05:17]} Bxd3 {[%emt 0:00:55]} 11. Nxd3 {[%emt 0:00:08]} e6 {[%emt 0:00:23]} 12. Nd2 {[%emt 0:00:58]} Be7 {[%emt 0:01:44]} 13. Nf3 {[%emt 0:02:44]} O-O {[%emt 0:01:47]} 14. Qe2 {[%emt 0:00:50]} Nd7 {[%emt 0:10:19]} 15. Rae1 {[%emt 0:04:40]} b5 {[%emt 0:03:15]} 16. a3 {[%emt 0:02:04]} Re8 {[%emt 0:05:26]} 17. Ng5 {[%emt 0:04:42]} Bxg5 {[%emt 0:07:03]} 18. Bxg5 {[%emt 0:02:23]} e5 {[%emt 0:04:22]} 19. dxe5 {[%emt 0:07:49]} Ndxe5 {[%emt 0:03:08]} 20. Be3 {[%emt 0:03:38]} Nc4 {[%emt 0:06:41]} 21. Qf3 {[%emt 0:03:04]} Qd7 {[%emt 0:01:43]} 22. h3 {[%emt 0:02:19]} N6e5 {[%emt 0:08:03]} 23. Nxe5 {[%emt 0:03:18]} Nxe5 {[%emt 0:06:35]} 24. Qg3 {[%emt 0:01:32]} f6 {[%emt 0:02:28]} 25. Rd1 {[%emt 0:02:50]} Nc4 {[%emt 0:02:53]} 26. Bc1 {[%emt 0:04:00]} Rad8 {[%emt 0:02:08]} 27. Qd3 {[%emt 0:04:48]} a5 {[%emt 0:00:49]} 28. Rfe1 {[%emt 0:06:27]} a4 {[%emt 0:00:38]} 29. Rxe8+ {[%emt 0:02:21]} Qxe8 {[%emt 0:02:08]} 30. Kf1 {[%emt 0:01:12]} Qg6 {[%emt 0:06:19]} 31. Qe2 {[%emt 0:06:22]} Re8 {[%emt 0:01:46]} 32. Be3 {[%emt 0:06:01]} Qf5 {[%emt 0:01:48]} 33. Kg1 {[%emt 0:02:37]} Kf7 {[%emt 0:01:13]} 34. g4 {[%emt 0:02:06]} Qe5 {[%emt 0:00:54]} 35. Qd3 {[%emt 0:04:42]} Nxb2 {[%emt 0:01:35]} 36. Qxd5+ {[%emt 0:00:58]} Qxd5 {[%emt 0:00:03]} 37. Rxd5 {[%emt 0:00:01]} Nc4 {[%emt 0:00:59]} 38. Rxb5 {[%emt 0:01:48]} Nxe3 {[%emt 0:00:17]} 39. fxe3 {[%emt 0:00:06]} Rxe3 {[%emt 0:00:02]} 40. Rb4 {[%emt 0:06:49]} Rxh3 {[%emt 0:01:58]} 41. Rxa4 {[%emt 0:32:08]} Rxc3 {[%emt 0:30:37]} 42. Kg2 {[%emt 0:00:00]} Rc5 {[%emt 0:00:00]} 43. Rb4 {[%emt 0:00:00]} Rc2+ {[%emt 0:00:00]} 44. Kg1 {[%emt 0:00:00]} Kg6 {[%emt 0:00:00]} 45. a4 {[%emt 0:00:00]} Ra2 {[%emt 0:00:00]} 46. Rc4 {[%emt 0:00:00]} Kg5 {[%emt 0:00:00]} 47. Kf1 {[%emt 0:00:00]} h5 {[%emt 0:00:00]} 48. gxh5 {[%emt 0:00:00]} Kxh5 {[%emt 0:00:00]} 49. Rc7 {[%emt 0:00:00]} g5 {[%emt 0:00:00]} 50. Rf7 {[%emt 0:00:00]} Kg6 {[%emt 0:00:00]} 51. Ra7 {[%emt 0:00:00]} f5 {[%emt 0:00:00]} 52. a5 {[%emt 0:00:00]} f4 {[%emt 0:00:00]} 53. Ra8 {[%emt 0:00:00]} Kf5 {[%emt 0:00:00]} 54. a6 {[%emt 0:00:00]} Kg4 {[%emt 0:00:00]} 55. a7 {[%emt 0:00:00]} Kf3 {[%emt 0:00:00]} 56. Kg1 {[%emt 0:00:00]} g4 {[%emt 0:00:00]} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.9"]
[White "Kozak, Antoni"]
[Black "Brozka, Karel"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2356"]
[BlackElo "2143"]
[Annotator "ChessBase"]
[PlyCount "75"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:01:16]} c6 {[%emt 0:00:17]} 2. d4 {[%emt 0:00:35]} d5 {[%emt 0:00:04]} 3. exd5 {[%emt 0:01:27]} cxd5 {[%emt 0:00:20]} 4. Bd3 {[%emt 0:00:24]} Nc6 {[%emt 0:00:04]} 5. c3 {[%emt 0:00:05]} Nf6 {[%emt 0:00:02]} 6. h3 {[%emt 0:00:08]} g6 {[%emt 0:01:56]} 7. Bf4 {[%emt 0:00:16]} Bg7 {[%emt 0:00:19]} 8. Nf3 {[%emt 0:02:54]} Bf5 {[%emt 0:02:59]} 9. Be2 {[%emt 0:00:06]} O-O {[%emt 0:02:59]} 10. Nbd2 {[%emt 0:04:59]} Ne4 {[%emt 0:07:02]} 11. O-O {[%emt 0:00:19]} Rc8 {[%emt 0:03:32]} 12. Re1 {[%emt 0:12:43]} Nxd2 {[%emt 0:11:51]} 13. Qxd2 {[%emt 0:01:33]} Re8 {[%emt 0:02:04]} 14. Rad1 {[%emt 0:18:31]} Qa5 {[%emt 0:02:18]} 15. a3 {[%emt 0:00:47]} b5 {[%emt 0:02:19]} 16. Nh2 {[%emt 0:04:55]} Qb6 {[%emt 0:23:16]} 17. Nf1 {[%emt 0:00:51]} Na5 {[%emt 0:02:51]} 18. b4 {[%emt 0:10:55]} Nb7 {[%emt 0:05:03]} 19. Ne3 {[%emt 0:01:53]} Be6 {[%emt 0:00:08]} 20. Bf3 {[%emt 0:05:16]} Qc6 {[%emt 0:01:36]} 21. Qa2 {[%emt 0:02:02]} Red8 {[%emt 0:04:39]} 22. Rc1 {[%emt 0:00:28]} Qd7 {[%emt 0:01:07]} 23. Nd1 {[%emt 0:07:51]} Bf5 {[%emt 0:03:21]} 24. Qe2 {[%emt 0:01:02]} e6 {[%emt 0:10:27]} 25. Nb2 {[%emt 0:03:47]} h6 {[%emt 0:05:21]} 26. g4 {[%emt 0:00:35]} g5 {[%emt 0:00:22]} 27. gxf5 {[%emt 0:01:18]} gxf4 {[%emt 0:00:02]} 28. fxe6 {[%emt 0:00:18]} Qxe6 {[%emt 0:01:08]} 29. Qxe6 {[%emt 0:01:43]} fxe6 {[%emt 0:00:02]} 30. Bg4 {[%emt 0:00:07]} Rc7 {[%emt 0:02:22]} 31. Bxe6+ {[%emt 0:00:07]} Kh8 {[%emt 0:00:46]} 32. Nd3 {[%emt 0:00:10]} Bf6 {[%emt 0:00:44]} 33. Kg2 {[%emt 0:03:14]} Rd6 {[%emt 0:02:39]} 34. Kf3 {[%emt 0:01:29]} Nd8 {[%emt 0:00:14]} 35. Bf5 {[%emt 0:01:51]} Nf7 {[%emt 0:00:18]} 36. Nxf4 {[%emt 0:01:09]} Bg5 {[%emt 0:00:20]} 37. Re8+ {[%emt 0:00:06]} Kg7 {[%emt 0:00:06]} 38. Nh5# 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.10"]
[White "Van Osch, Mees"]
[Black "Koubova, Anna Marie"]
[Result "1-0"]
[ECO "B15"]
[WhiteElo "2364"]
[BlackElo "2148"]
[Annotator "ChessBase"]
[PlyCount "71"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:04]} c6 {[%emt 0:00:11]} 2. d4 {[%emt 0:00:04]} d5 {[%emt 0:00:10]} 3. Nc3 {[%emt 0:03:38]} dxe4 {[%emt 0:00:31]} 4. Nxe4 {[%emt 0:00:05]} Nf6 {[%emt 0:00:11]} 5. Nxf6+ {[%emt 0:00:54]} exf6 {[%emt 0:00:09]} 6. c3 {[%emt 0:00:01]} Bd6 {[%emt 0:00:32]} 7. Bd3 {[%emt 0:00:04]} O-O {[%emt 0:00:20]} 8. Qc2 {[%emt 0:00:02]} Re8+ {[%emt 0:00:16]} 9. Ne2 {[%emt 0:00:04]} h5 {[%emt 0:00:23]} 10. Be3 {[%emt 0:12:54]} Nd7 {[%emt 0:05:04]} 11. O-O-O {[%emt 0:00:06]} b5 {[%emt 0:00:29]} 12. d5 {[%emt 0:10:15]} c5 {[%emt 0:01:22]} 13. Bxb5 {[%emt 0:01:25]} Rb8 {[%emt 0:00:44]} 14. c4 {[%emt 0:06:34]} a6 {[%emt 0:01:11]} 15. Ba4 {[%emt 0:09:33]} Re7 {[%emt 0:03:03]} 16. Rhe1 {[%emt 0:28:25]} Ne5 {[%emt 0:03:57]} 17. Ng3 {[%emt 0:03:38]} Reb7 {[%emt 0:14:16]} 18. b3 {[%emt 0:00:57]} Rb4 {[%emt 0:16:54]} 19. Bd2 {[%emt 0:00:52]} Rxa4 {[%emt 0:01:46]} 20. bxa4 {[%emt 0:00:08]} Qb6 {[%emt 0:00:28]} 21. Re3 {[%emt 0:05:44]} Ng4 {[%emt 0:10:50]} 22. Rb3 {[%emt 0:01:15]} Qc7 {[%emt 0:00:37]} 23. Ne4 {[%emt 0:01:22]} Bd7 {[%emt 0:03:36]} 24. Rxb8+ {[%emt 0:04:02]} Qxb8 {[%emt 0:00:07]} 25. Qb3 {[%emt 0:00:06]} Qc7 {[%emt 0:01:44]} 26. f3 {[%emt 0:00:54]} Ne5 {[%emt 0:02:05]} 27. a5 {[%emt 0:04:30]} Bf5 {[%emt 0:01:46]} 28. Qb6 {[%emt 0:02:38]} Bxe4 {[%emt 0:04:04]} 29. Qxc7 {[%emt 0:01:00]} Bxc7 {[%emt 0:01:24]} 30. fxe4 {[%emt 0:00:04]} Nxc4 {[%emt 0:00:13]} 31. g3 {[%emt 0:00:51]} Kf8 {[%emt 0:08:58]} 32. Kc2 {[%emt 0:02:21]} Ke7 {[%emt 0:02:41]} 33. Kb3 {[%emt 0:00:43]} Ne5 {[%emt 0:02:25]} 34. Bf4 {[%emt 0:00:31]} Bxa5 {[%emt 0:01:23]} 35. Bxe5 {[%emt 0:00:05]} fxe5 {[%emt 0:00:05]} 36. Kc4 {[%emt 0:01:22]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.11"]
[White "Goossens, Hanne"]
[Black "Hrabusa, Matej"]
[Result "1/2-1/2"]
[ECO "B92"]
[WhiteElo "2133"]
[BlackElo "2369"]
[Annotator "TA"]
[PlyCount "173"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,173,0,6,10,0,22,-31,-27,-31,-47,-42,-37,-32,41,50,42,43,59,12,9,0,0,0,0,0,0,0,0,-5,0,-15,-11,-8,0,0,0,-75,-84,-75,-85,-70,-77,-81,-93,-99,-95,-98,-102,-93,-91,-91,-98,-101,-87,-97,-103,-85,-90,-111,-15,-16,-19,-37,-33,-44,-24,-59,-57,-113,-119,-118,-120,-120,-120,-118,-118,-116,-119,-117,-117,-116,-93,-93,-93,-93,-93,-93,-10,-43,0,-43,-43,-43,-43,-43,-43,-43,-43,-43,-43,-43,-43,-43,-43,-43,-43,-43,-43,-43,-43,-43,-43,-43,-43,-43,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-29988,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. Be3 Be6 9. Nd5 Nxd5 10. exd5 Bf5 {B92: Sicilian Najdorf: 6 Be2.} 11. O-O Nd7 12. f4 (12. Qd2 $11) 12... exf4 $15 {Black is slightly better.} 13. Bxf4 {[%cal Of4h6]} Bg6 {[#]} 14. Bh5 $146 ({Predecessor:} 14. Qd2 O-O 15. Bd3 Bf6 16. Bxg6 hxg6 17. c3 Ne5 18. Bxe5 Bxe5 19. Rf3 Qh4 20. Rh3 {0-1 (57) Moulay,M-Bouamra,K Tiaret 2000}) 14... Bxh5 15. Qxh5 {[%cal Of4d6]} Nf6 ({Black should play} 15... O-O $15) 16. Qf3 $1 $14 O-O 17. Nd4 Qc8 {[#] Inhibits Nf5.} ({Weaker is} 17... Qb6 18. Be3 $16) 18. Kh1 (18. Bh6 $1 $14 Qc5 19. Be3 Qxd5 20. Nf5) 18... Re8 $11 19. h3 Qc5 20. Nf5 {[%cal Of4h6] Threatens to win with Bh6!} Qxd5 21. Qxd5 Nxd5 22. Bxd6 Bf6 23. c3 Re6 24. Rae1 Rae8 25. Rxe6 fxe6 26. Ng3 Ne3 27. Rf3 {[#]} (27. Rf2 $11 {keeps the balance.}) 27... Nc4 $1 $17 {[%csl LRb2,LRd6]} 28. Ne4 Nxd6 29. Nxd6 {[%mdl 4096] Endgame KRB-KRN} Rd8 30. Ne4 Rd1+ 31. Kh2 Be5+ 32. g3 Re1 33. Nc5 {[%csl LRb7,LRe6]} Re2+ 34. Kh1 Rxb2 35. Nxe6 {[%csl Ge6][%cal Rf3f8]} Bf6 36. a4 Ra2 37. Nc5 a5 38. Re3 Kf7 (38... b6 $17 39. Nd7 Rxa4) 39. Nxb7 $11 Rxa4 {aiming for ...Ra1+.} 40. Nd6+ Kg6 41. c4 $1 Ra2 42. c5 Rc2 43. Ra3 (43. Nb7 $1 $15) 43... Rxc5 $17 44. Nb7 {[%csl LRa5,LRc5]} Rc1+ 45. Kg2 Rc2+ 46. Kh1 Rc3 47. Rxa5 Rxg3 48. Kh2 Re3 49. Kg2 h5 50. Nd6 Re2+ 51. Kf3 Re1 52. Ne4 Bd4 (52... Ra1 $17 53. Rxa1 Bxa1) 53. Rd5 Bf6 (53... Ba1 $15 {feels stronger.}) 54. Nxf6 (54. Ra5 $1 $11) 54... gxf6 $11 {KR-KR} 55. h4 Re5 56. Rd4 Ra5 57. Rb4 Ra3+ 58. Kg2 Re3 59. Rf4 Kf7 60. Rf5 Re5 61. Rf4 Ke6 62. Kg3 Rb5 63. Ra4 Ke5 64. Rc4 Rb3+ 65. Kg2 Rd3 66. Rc6 f5 (66... Rd4 $15 {is superior.}) 67. Rh6 Ke4 68. Rxh5 f4 69. Rh8 Rd2+ 70. Kf1 $1 Kf3 {[%cal Rd2d1]} 71. Ke1 {To avoid Rd1+} Ra2 72. h5 Ra1+ 73. Kd2 Kf2 74. h6 f3 75. h7 {White wants to mate with Rc8.} Ra7 76. Kd3 Re7 77. Kd2 $1 Rd7+ 78. Kc3 Rf7 79. Kd3 Kf1 80. Kd2 f2 81. Kd1 $2 {[%mdl 8192] [#]} (81. Kc2 $11) 81... Rd7+ $2 (81... Kg2 $1 {mates} 82. Rg8+ Kf3 83. Kc2 f1=Q 84. Rg3+ Kxg3 85. h8=Q Rc7+ 86. Qc3+ Rxc3+ 87. Kxc3 Qb5 88. Kd2 Qc4 89. Ke3 Kg2 90. Kd2 Kf2 91. Kd1 Ke3 92. Ke1 Qe2#) 82. Kc2 {The position is equal.} Re7 83. Kd2 Rg7 84. Kc2 $1 Rd7 85. Kc3 Re7 {( -> ...Ke2)} 86. Kd2 $1 Rg7 87. Kc2 {Weighted Error Value: White=0.10 (very precise) /Black=0.12 (very precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.12"]
[White "Carlsson, Ludvig"]
[Black "Delgerdalai, Bayarjavkhlan"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "2355"]
[BlackElo "2062"]
[Annotator "ChessBase"]
[PlyCount "93"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. c4 {[%emt 0:01:06]} e5 {[%emt 0:00:19]} 2. Nc3 {[%emt 0:00:53]} Nf6 {[%emt 0:00:07]} 3. Nf3 {[%emt 0:00:10]} Nc6 {[%emt 0:00:23]} 4. e3 {[%emt 0:00:09]} Bb4 {[%emt 0:01:15]} 5. Qc2 {[%emt 0:00:45]} O-O {[%emt 0:01:42]} 6. Nd5 {[%emt 0:00:31]} Be7 {[%emt 0:04:51]} 7. a3 {[%emt 0:11:27]} a5 {[%emt 0:01:34]} 8. b3 {[%emt 0:00:38]} d6 {[%emt 0:06:24]} 9. Bb2 {[%emt 0:06:38]} h6 {[%emt 0:03:16]} 10. d4 {[%emt 0:13:51]} Bg4 {[%emt 0:13:07]} 11. Nxe7+ {[%emt 0:02:38]} Qxe7 {[%emt 0:00:46]} 12. d5 {[%emt 0:00:48]} Nb8 {[%emt 0:04:51]} 13. Be2 {[%emt 0:05:39]} Nbd7 {[%emt 0:05:17]} 14. h3 {[%emt 0:05:04]} Bh5 {[%emt 0:02:15]} 15. Nh4 {[%emt 0:00:23]} Bxe2 {[%emt 0:06:10]} 16. Nf5 {[%emt 0:00:07]} Qd8 {[%emt 0:00:23]} 17. Kxe2 {[%emt 0:00:19]} g6 {[%emt 0:04:43]} 18. Nxh6+ {[%emt 0:04:49]} Kg7 {[%emt 0:00:02]} 19. Ng4 {[%emt 0:00:16]} Nxg4 {[%emt 0:00:06]} 20. hxg4 {[%emt 0:00:05]} Qg5 {[%emt 0:00:12]} 21. f3 {[%emt 0:01:46]} f5 {[%emt 0:00:44]} 22. Raf1 {[%emt 0:00:30]} Rh8 {[%emt 0:07:11]} 23. Rh3 {[%emt 0:08:17]} fxg4 {[%emt 0:01:51]} 24. f4 {[%emt 0:01:28]} Qe7 {[%emt 0:03:18]} 25. fxe5 {[%emt 0:02:14]} Nxe5 {[%emt 0:02:04]} 26. Rxh8 {[%emt 0:00:34]} Rxh8 {[%emt 0:00:12]} 27. Qe4 {[%emt 0:00:07]} Rh4 {[%emt 0:02:25]} 28. Qf4 {[%emt 0:06:22]} b6 {[%emt 0:02:37]} 29. a4 {[%emt 0:00:20]} Rh5 {[%emt 0:04:05]} 30. Qxg4 {[%emt 0:03:22]} Rg5 {[%emt 0:00:57]} 31. Qe4 {[%emt 0:01:26]} Qe8 {[%emt 0:03:12]} 32. Qf3 {[%emt 0:07:56]} Rf5 {[%emt 0:02:03]} 33. Qg4 {[%emt 0:00:16]} Rxf1 {[%emt 0:01:55]} 34. Kxf1 {[%emt 0:00:06]} Qf7+ {[%emt 0:01:15]} 35. Ke2 {[%emt 0:01:33]} Qf6 {[%emt 0:02:08]} 36. Bxe5 {[%emt 0:03:09]} dxe5 {[%emt 0:07:51]} 37. Qd7+ {[%emt 0:00:11]} Kh6 {[%emt 0:00:04]} 38. Qxc7 {[%emt 0:00:25]} Qf5 {[%emt 0:01:02]} 39. Qe7 {[%emt 0:00:46]} Qc2+ {[%emt 0:02:16]} 40. Kf3 {[%emt 0:00:15]} Qxb3 {[%emt 0:01:58]} 41. d6 {[%emt 0:33:35]} Qxc4 {[%emt 0:32:07]} 42. d7 {[%emt 0:00:46]} Qf1+ {[%emt 0:00:00]} 43. Kg3 {[%emt 0:00:00]} Qe1+ {[%emt 0:00:00]} 44. Kh2 {[%emt 0:00:00]} g5 {[%emt 0:00:00]} 45. Qf6+ {[%emt 0:00:00]} Kh7 {[%emt 0:00:00]} 46. Qf5+ {[%emt 0:00:00]} Kh6 {[%emt 0:00:00]} 47. d8=Q {[%emt 0:00:00]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.13"]
[White "Pham, Khoi"]
[Black "Sorm, Daniel"]
[Result "1/2-1/2"]
[ECO "C78"]
[WhiteElo "2114"]
[BlackElo "2348"]
[Annotator "ChessBase"]
[PlyCount "53"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:02]} e5 {[%emt 0:01:18]} 2. Nf3 {[%emt 0:00:06]} Nc6 {[%emt 0:00:07]} 3. Bb5 {[%emt 0:00:05]} a6 {[%emt 0:00:21]} 4. Ba4 {[%emt 0:00:34]} Nf6 {[%emt 0:00:17]} 5. O-O {[%emt 0:00:11]} b5 {[%emt 0:00:15]} 6. Bb3 {[%emt 0:00:11]} Bc5 {[%emt 0:01:32]} 7. c3 {[%emt 0:00:38]} d6 {[%emt 0:00:23]} 8. a4 {[%emt 0:00:17]} Bd7 {[%emt 0:05:34]} 9. d4 {[%emt 0:05:19]} Bb6 {[%emt 0:00:16]} 10. h3 {[%emt 0:05:12]} h6 {[%emt 0:02:33]} 11. Be3 {[%emt 0:06:27]} Nxe4 {[%emt 0:23:20]} 12. dxe5 {[%emt 0:04:33]} Bxe3 {[%emt 0:00:43]} 13. fxe3 {[%emt 0:03:07]} O-O {[%emt 0:01:31]} 14. exd6 {[%emt 0:06:04]} Nxd6 {[%emt 0:01:36]} 15. Nbd2 {[%emt 0:04:01]} Qe7 {[%emt 0:02:59]} 16. e4 {[%emt 0:03:10]} Rad8 {[%emt 0:08:38]} 17. axb5 {[%emt 0:10:34]} axb5 {[%emt 0:00:18]} 18. Qe2 {[%emt 0:05:44]} Be6 {[%emt 0:04:50]} 19. Bxe6 {[%emt 0:06:05]} Qxe6 {[%emt 0:00:24]} 20. Nd4 {[%emt 0:00:56]} Qe8 {[%emt 0:09:21]} 21. Rae1 {[%emt 0:03:51]} Ne5 {[%emt 0:04:07]} 22. N2f3 {[%emt 0:02:55]} Nxf3+ {[%emt 0:03:23]} 23. Nxf3 {[%emt 0:03:22]} f6 {[%emt 0:04:09]} 24. e5 {[%emt 0:02:23]} fxe5 {[%emt 0:00:22]} 25. Qxe5 {[%emt 0:03:14]} Qxe5 {[%emt 0:00:36]} 26. Rxe5 {[%emt 0:00:05]} Rde8 {[%emt 0:06:43]} 27. Rfe1 {[%emt 0:00:57]} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.14"]
[White "Mikes, Jan"]
[Black "Adamko, Peter"]
[Result "1/2-1/2"]
[ECO "C88"]
[WhiteElo "2329"]
[BlackElo "2113"]
[Annotator "TA"]
[PlyCount "121"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,121,66,46,0,7,-13,0,-20,-3,-32,-26,-29,-3,-4,-7,-10,19,-5,-11,-18,-1,-43,-14,-43,-16,-114,-112,-135,-132,-134,-128,-143,-119,-111,-107,-112,-110,-104,-100,-110,-99,-110,-94,-100,-98,-106,-102,-141,-136,-265,-265,-317,-332,-296,-308,-272,-264,-691,-691,-683,-680,-557,-34,-34,-34,-41,-41,-56,-8,-8,-8,-8,-8,-8,-8,-8,-8,-1076,-7,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. a4 Rb8 9. axb5 axb5 10. c3 {10.Nc3 is vanishing.} d5 11. exd5 Nxd5 12. d4 {C88: Closed Ruy Lopez: Anti-Marshall Systems.} exd4 13. Nxd4 Nxd4 14. Qxd4 Be6 {[#]} 15. Rd1 $146 {[%cal Rb3d5]} ({Predecessor:} 15. Nd2 c5 16. Qe4 Nf6 17. Qe2 c4 18. Bc2 Re8 19. Ne4 Bf5 20. Bf4 Bxe4 21. Bxe4 {1-0 (57) Farah,D (1950)-Ferreira Brandet,R Sao Paulo 2005}) 15... c6 16. Bc2 Qb6 (16... Qc7 {keeps more tension.} 17. Ra7 Qc8 18. Nd2 Bf5 19. Bxf5 Qxf5 20. Qe4 Qxe4 21. Nxe4 Ra8) 17. Qxb6 Nxb6 {[%cal Bd5b6,Bb6d7,Bd7c5,Bc5e6,Be6f4][%mdl 32]} 18. Ra6 Bd5 19. b3 Bf6 20. Be3 Nd7 21. f4 (21. Ra7 $11 Rfd8 22. Bf4) 21... Rb7 22. Bd4 Bxd4+ 23. Rxd4 (23. cxd4 $11 {was the only way to keep the balance.} Rc7 24. Re1) 23... Nc5 $17 {[%csl LRa6,LRb3]} 24. Ra3 Ne6 $1 25. Rd2 Nxf4 26. c4 bxc4 27. bxc4 Bxc4 28. Ra4 {[#]} Bb3 29. Bxh7+ Kxh7 30. Rxf4 Be6 31. Nc3 Ra8 32. h3 g6 33. Ne4 Kg7 {Threatens to win with ...Rb4.} 34. Nf6 c5 {[%cal Bc6c5,Bc5c4,Bc4c3,Bc3c2][%mdl 32]} 35. h4 (35. Rf1 $17 {keeps fighting.}) 35... Rb4 $19 36. Rdf2 Rxf4 37. Rxf4 {[%mdl 4096] Endgame KRB-KRN} c4 38. Ne4 Ra3 39. Kf2 $2 (39. Ng5 Bd5 40. Rd4) 39... c3 40. Ke3 c2+ 41. Kd2 {[#]} Bf5 $2 ({Black should try} 41... Re3 $3 $19 {[%mdl 512]} 42. Ng5 Re2+ $3 {[%mdl 512]} 43. Kc1 Bf5) 42. g4 $15 Bxe4 43. Rxe4 {[#] KR-KR} Rc3 $1 44. Kc1 f5 (44... Rc7 $15) 45. gxf5 $1 $11 gxf5 46. Re2 Kh6 47. Rf2 Rc5 48. Rf4 Kg6 49. Rf2 $2 {[%mdl 8192] [#]} (49. Rf1 $11) 49... Ra5 $2 (49... Rc4 $1 $19 {And now ...f4 would win.} 50. Rg2+ Rg4) 50. Rxc2 {The position is equal.} Ra4 51. Kd2 Rxh4 52. Ke3 Kg5 {Hoping for ...Rh3+.} 53. Kf3 Rh3+ 54. Kg2 Ra3 55. Rb2 Kg4 56. Rc2 f4 57. Rb2 Rg3+ 58. Kf2 Rh3 {( -> ...Rh2+)} 59. Rb8 Rh2+ 60. Kg1 $1 Ra2 {Threatening ...Kg3.} 61. Rb3 {Weighted Error Value: White=0.36/Black=0.34} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.15"]
[White "Lim, Zhuo Ren"]
[Black "Kukucka, Matej"]
[Result "1-0"]
[ECO "D78"]
[WhiteElo "2311"]
[BlackElo "2104"]
[Annotator "ChessBase"]
[PlyCount "57"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:01:02]} Nf6 {[%emt 0:00:22]} 2. c4 {[%emt 0:00:20]} g6 {[%emt 0:00:24]} 3. g3 {[%emt 0:00:42]} c6 {[%emt 0:00:24]} 4. Bg2 {[%emt 0:00:45]} d5 {[%emt 0:00:40]} 5. Nf3 {[%emt 0:00:33]} Bg7 {[%emt 0:00:23]} 6. O-O {[%emt 0:00:14]} O-O {[%emt 0:00:24]} 7. Qa4 {[%emt 0:00:21]} dxc4 {[%emt 0:00:39]} 8. Qxc4 {[%emt 0:00:18]} Bf5 {[%emt 0:01:56]} 9. Nc3 {[%emt 0:02:02]} Ne4 {[%emt 0:01:45]} 10. Nh4 {[%emt 0:07:38]} b5 {[%emt 0:10:54]} 11. Qb3 {[%emt 0:05:27]} Nxc3 {[%emt 0:13:56]} 12. bxc3 {[%emt 0:00:08]} Be6 {[%emt 0:00:49]} 13. Qc2 {[%emt 0:00:32]} Bd5 {[%emt 0:03:23]} 14. e4 {[%emt 0:00:29]} Bc4 {[%emt 0:00:03]} 15. Rd1 {[%emt 0:00:14]} Nd7 {[%emt 0:01:54]} 16. Nf3 {[%emt 0:00:26]} Nb6 {[%emt 0:04:41]} 17. h4 {[%emt 0:01:06]} f5 {[%emt 0:07:09]} 18. h5 {[%emt 0:04:58]} fxe4 {[%emt 0:01:32]} 19. Nh4 {[%emt 0:00:05]} Bd3 {[%emt 0:03:57]} 20. Rxd3 {[%emt 0:00:06]} exd3 {[%emt 0:00:04]} 21. Qxd3 {[%emt 0:01:17]} Nd5 {[%emt 0:12:26]} 22. h6 {[%emt 0:04:56]} Bf6 {[%emt 0:01:26]} 23. Nxg6 {[%emt 0:00:53]} Rf7 {[%emt 0:00:43]} 24. Bd2 {[%emt 0:10:43]} hxg6 {[%emt 0:08:45]} 25. Qxg6+ {[%emt 0:00:08]} Kf8 {[%emt 0:00:09]} 26. h7 {[%emt 0:00:17]} Ke8 {[%emt 0:00:48]} 27. Bh3 {[%emt 0:04:16]} Nc7 {[%emt 0:03:48]} 28. Qg8+ {[%emt 0:05:36]} Rf8 {[%emt 0:00:05]} 29. Bh6 {[%emt 0:01:34]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.16"]
[White "Lorans, Sylvain"]
[Black "Acor, Corey"]
[Result "0-1"]
[ECO "A52"]
[WhiteElo "2110"]
[BlackElo "2303"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,62,20,22,11,11,-6,-12,-13,-10,-16,-12,-66,-56,-58,-62,-56,-64,-87,-87,-103,-91,-101,-101,-103,-101,-107,-68,-91,-115,-116,-113,-144,-151,-148,-147,-152,-152,-184,-181,-403,-389,-402,-386]} 1. d4 {[%cal Bd2d4,Bd4e5][%mdl 32]} Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Nc6 5. Nf3 Bb4+ 6. Nbd2 {[%cal Bb1d2,Bd2b3,Bb3d4,Bd4c6][%mdl 32]} Qe7 7. e3 Ngxe5 8. Nxe5 Nxe5 9. Be2 d6 10. O-O O-O {10...a5 gains popularity.} 11. Nb3 b6 12. Nd4 {A52: Budapest Gambit.} Bc5 {[#]} 13. b4 $146 ({Predecessor:} 13. Bxe5 dxe5 14. Nc6 Qe6 15. Qd5 Qe8 {½-½ (15) Konyves,A (2122)-Kahn,E (2172) Budapest 2021}) 13... Bxb4 14. Bxe5 {The position is equal.} dxe5 (14... Qxe5 15. Bf3 Bd7 16. Bxa8 Rxa8 17. Qf3 $14) 15. Nc6 Qc5 16. Bf3 (16. Nxb4 $11 Qxb4 17. Qd5) 16... Bb7 $15 {A strong pair of Bishops.} 17. Qa4 Bxc6 18. Bxc6 Rad8 (18... Qxc4 $2 19. Bxa8 a5 20. Bb7 $18) 19. Rfd1 a5 (19... Qxc4 $2 20. a3 $18) 20. Qb5 Qe7 21. Rd5 Bd6 22. Rad1 f5 23. Qb1 {[%cal Oc4c5]} e4 24. Qb2 f4 25. exf4 {[#]} e3 $1 ({Much worse is} 25... Bxf4 $6 26. Rxd8 Rxd8 27. Rxd8+ Qxd8 28. Bd5+ Kh8 29. g3 $11) 26. fxe3 Qxe3+ 27. Qf2 Qxf2+ ({Weaker is} 27... Bxf4 28. g3 Qxf2+ 29. Kxf2 Bd6+ 30. Kg2 $17) 28. Kxf2 Rxf4+ 29. Kg1 Rxc4 30. Rxd6 (30. Bb5 Rb4 31. Kh1) 30... Rxd6 $19 31. Bd5+ {[#]} Rxd5 $1 {Weighted Error Value: White=0.26 (precise) /Black=0.02 (flawless)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.17"]
[White "Mannion, Stephen R"]
[Black "Janous, Marek"]
[Result "1/2-1/2"]
[ECO "B93"]
[WhiteElo "2267"]
[BlackElo "2078"]
[Annotator "TA"]
[PlyCount "152"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,152,0,-4,11,10,16,2,18,14,20,10,76,27,28,14,43,27,27,25,59,53,46,0,0,0,0,0,0,0,0,0,0,0,0,-13,0,4,4,10,106,123,126,129,112,132,631,207,212,7,9,16,33,0,0,-427,-410,-361,7,4,51,0,0,-13,-11,-9,137,29,181,142,161,155,158,97,200,192,167,87,143,123,108,97,91,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,95,95,95,0,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5 7. Nf3 Nbd7 8. a4 Be7 9. Bc4 O-O 10. O-O Qc7 11. Qe2 exf4 {B93: Sicilian Najdorf: 6 f4.} 12. Bxf4 Ne5 13. Bb3 {Active counter play!} Bg4 14. Kh1 Rfe8 15. Rad1 {[#]} h6 $146 (15... Be6 $11) ({Predecessor:} 15... Rac8 16. h3 Bh5 17. g4 Bg6 18. Nd4 Bf8 19. Bxe5 Rxe5 20. Rxf6 gxf6 21. Nf5 d5 22. Nxd5 {½-½ (74) Eibl,M (2159)-Sommer,M (2117) Bayern 2012}) 16. Nd5 (16. h3 $16 Be6 17. Nd4) 16... Nxd5 $11 17. Bxd5 Bf6 18. b3 Rad8 19. Qf2 b5 20. axb5 axb5 21. Rd2 (21. Be3 $14) 21... Nxf3 22. gxf3 Be6 23. Rg1 Kh7 24. Qg2 g6 25. Rgd1 Bc3 26. Rd3 Be5 27. Be3 Rc8 28. Bxe6 Rxe6 29. f4 Bh8 (29... Bg7 $11) 30. f5 $16 gxf5 31. exf5 Rg8 32. Qf3 (32. fxe6 Rxg2 33. Kxg2 Qxc2+ 34. R1d2 Qc6+ 35. Kg1 fxe6 36. Rxd6 Qe4 37. Rd7+ Kg6 $17) 32... Re7 {[%mdl 8192] [#]} (32... Ree8 $16) 33. Rxd6 $2 (33. Bxh6 $1 {[%mdl 512]} Qb7 34. Qxb7 Rxb7 35. Rh3) 33... f6 $18 {[#]} 34. Qh5 $2 Qb7+ 35. R1d5 {[%csl Ge3][%cal Rh5h6] Chess con chili.} Bg7 (35... Rxe3 $2 36. Rd7+ Qxd7 37. Rxd7+ Bg7 38. Rb7 $18) 36. Qg6+ Kh8 37. Qg3 {[%mdl 8192]} (37. Bd4 $11) 37... Bf8 $1 $19 38. Qf3 Re5 $2 (38... Re8 $1 $19 39. Rd7 Qb6) 39. Rd7 Qa8 (39... Qc6 $11 40. c4 bxc4 41. bxc4 Re8) 40. h4 (40. Bf2 $14) 40... Qa1+ 41. Rd1 Qc3 {[%csl LRc2,LRe3]} 42. R7d3 $132 {[%mdl 2048] White is not holding back} (42. Qb7 $2 Be7 $1 43. R7d3 (43. Rxe7 Rxe7 44. Qd5 Qxe3) 43... Qxc2 $19) 42... Qb4 (42... Qxc2 $11 43. Bf2 Re2) 43. Bf2 ({White should try} 43. Bd4 $1 $16) 43... Re4 (43... Qg4 $11 {and Black stays safe.}) 44. Rd4 $18 Rxd4 45. Bxd4 (45. Rxd4 Qc5 $16) 45... Bg7 46. Qd5 (46. Qe4 $142) 46... Re8 {[#]} (46... Qe7 $16 {was necessary.}) 47. c3 $1 Qe7 48. Rg1 ({Wrong is} 48. Qxb5 $2 Qe4+ 49. Kg1 Qg4+ 50. Kf2 Qf4+ 51. Kg2 Rg8 $19) (48. Qg2 $18) 48... Qe2 (48... Kh7 $142) 49. Qg2 $16 {[%csl Gg1][%cal Rg2g7]} Qe4 50. Qxe4 Rxe4 {[%mdl 4096] Endgame KRB-KRB} 51. Rg6 ({White should play} 51. Ra1 $16) 51... Rxh4+ $11 52. Kg2 Rh5 53. Bxf6 Bxf6 54. Rxf6 {KR-KR} Kg7 55. Rg6+ Kh7 56. Rc6 {Hoping for Rc5.} Rxf5 57. b4 Kg7 58. Kg3 h5 59. Kh4 Re5 60. Rb6 Re4+ 61. Kxh5 {Threatens to win with Kg5.} Rc4 $1 62. Rxb5 Rxc3 63. Rf5 Rb3 64. Rf4 Rb1 65. Kg5 Rb2 (65... Re1 $11 {keeps the balance.}) 66. Kf5 $16 Kf7 {[#]} 67. Re4 (67. Ke5+ $1 $16 Ke7 68. Kd5) 67... Rb1 {The position is equal.} 68. Ke5 Ke7 $1 69. Kd5+ Kd7 70. Kc5 {aiming for b5.} Kc7 71. Kb5 Kb7 72. Re7+ Kb8 73. Rh7 Rb2 74. Ka5 Rg2 (74... Ra2+ 75. Kb6 Kc8 76. Rh8+ Kd7 77. Rb8 $18) 75. b5 Rg6 76. b6 Rg1 {Black defended with fortune.  Weighted Error Value: White=0.59/Black=0.51} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.18"]
[White "Unneland, Mathias"]
[Black "Mach, Petr"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "2262"]
[BlackElo "2090"]
[Annotator "ChessBase"]
[PlyCount "47"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. Nf3 g6 5. c4 Nb6 6. Nc3 Bg7 7. Be3 O-O 8. Qd2 Bg4 9. Ng5 e5 10. d5 f6 11. f3 fxg5 12. fxg4 c6 13. O-O-O cxd5 14. cxd5 Qc8 15. h3 Na6 16. Kb1 Nc4 17. Bxc4 Qxc4 18. Bxg5 e4 19. Rhe1 Nb4 20. Rxe4 Bxc3 21. Rxc4 Bxd2 22. Rxd2 Rf1+ 23. Rc1 Raf8 24. Rdd1 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.19"]
[White "Dev, Shah"]
[Black "Bouska, Jiri"]
[Result "1/2-1/2"]
[ECO "E62"]
[WhiteElo "2243"]
[BlackElo "2071"]
[Annotator "ChessBase"]
[PlyCount "117"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:06:41]} Nf6 {[%emt 0:00:26]} 2. c4 {[%emt 0:00:08]} g6 {[%emt 0:00:15]} 3. Nc3 {[%emt 0:00:06]} Bg7 {[%emt 0:00:07]} 4. Nf3 {[%emt 0:00:22]} O-O {[%emt 0:00:12]} 5. g3 {[%emt 0:00:04]} d6 {[%emt 0:00:06]} 6. Bg2 {[%emt 0:00:05]} c6 {[%emt 0:00:11]} 7. O-O {[%emt 0:00:08]} Bf5 {[%emt 0:00:16]} 8. Nh4 {[%emt 0:08:14]} Be6 {[%emt 0:00:18]} 9. d5 {[%emt 0:01:43]} cxd5 {[%emt 0:00:12]} 10. cxd5 {[%emt 0:00:07]} Bd7 {[%emt 0:00:31]} 11. e4 {[%emt 0:04:30]} Na6 {[%emt 0:05:35]} 12. h3 {[%emt 0:02:27]} Rc8 {[%emt 0:06:45]} 13. Be3 {[%emt 0:01:07]} Nc5 {[%emt 0:15:14]} 14. Qe2 {[%emt 0:29:14]} a6 {[%emt 0:10:46]} 15. Rfc1 {[%emt 0:15:14]} b5 {[%emt 0:02:48]} 16. b4 {[%emt 0:03:39]} Nb7 {[%emt 0:01:27]} 17. Qd2 {[%emt 0:05:47]} Rc4 {[%emt 0:03:16]} 18. Rab1 {[%emt 0:00:16]} Qb8 {[%emt 0:02:36]} 19. Bf1 {[%emt 0:07:59]} Nxe4 {[%emt 0:01:08]} 20. Nxe4 {[%emt 0:00:05]} Rxe4 {[%emt 0:00:07]} 21. Nf3 {[%emt 0:00:05]} e6 {[%emt 0:11:09]} 22. Bd3 {[%emt 0:00:36]} exd5 {[%emt 0:00:28]} 23. Bxe4 {[%emt 0:00:06]} dxe4 {[%emt 0:00:07]} 24. Ng5 {[%emt 0:00:14]} h6 {[%emt 0:01:40]} 25. Nxe4 {[%emt 0:00:07]} Bf5 {[%emt 0:00:11]} 26. f3 {[%emt 0:00:48]} d5 {[%emt 0:00:34]} 27. Bf4 {[%emt 0:06:45]} Qd8 {[%emt 0:00:27]} 28. g4 {[%emt 0:02:51]} Bxe4 {[%emt 0:00:58]} 29. fxe4 {[%emt 0:00:10]} Qb6+ {[%emt 0:00:29]} 30. Be3 {[%emt 0:00:32]} d4 {[%emt 0:00:39]} 31. Bxh6 {[%emt 0:01:37]} Bxh6 {[%emt 0:07:02]} 32. Qxh6 {[%emt 0:00:07]} Qd6 {[%emt 0:02:38]} 33. Rb3 {[%emt 0:01:26]} Qe5 {[%emt 0:00:12]} 34. Rd3 {[%emt 0:02:28]} Nd6 {[%emt 0:00:55]} 35. Rcd1 {[%emt 0:01:36]} Nc4 {[%emt 0:02:43]} 36. Re1 {[%emt 0:00:33]} Nb2 {[%emt 0:02:03]} 37. Rb3 {[%emt 0:00:31]} d3 {[%emt 0:01:34]} 38. Qe3 {[%emt 0:00:21]} Rd8 {[%emt 0:00:23]} 39. Rxb2 {[%emt 0:00:39]} Qxb2 {[%emt 0:00:10]} 40. e5 {[%emt 0:00:28]} Qxa2 {[%emt 0:04:26]} 41. Qg5 {[%emt 0:16:23]} Rd5 {[%emt 0:02:13]} 42. Qe3 {[%emt 0:11:13]} Rd7 {[%emt 0:04:13]} 43. Rc1 {[%emt 0:03:20]} d2 {[%emt 0:04:25]} 44. Rd1 {[%emt 0:00:02]} Kg7 {[%emt 0:00:55]} 45. Kf2 {[%emt 0:01:02]} Qc2 {[%emt 0:00:57]} 46. Qf3 {[%emt 0:00:37]} Qc4 {[%emt 0:01:24]} 47. Qf6+ {[%emt 0:00:29]} Kg8 {[%emt 0:00:24]} 48. e6 {[%emt 0:00:23]} Qxe6 {[%emt 0:00:57]} 49. Qxe6 {[%emt 0:00:01]} fxe6 {[%emt 0:00:11]} 50. Ke3 {[%emt 0:00:01]} Rh7 {[%emt 0:01:23]} 51. Rxd2 {[%emt 0:00:17]} Rxh3+ {[%emt 0:00:07]} 52. Kf4 {[%emt 0:00:02]} Rb3 {[%emt 0:00:51]} 53. Rd4 {[%emt 0:00:35]} Rc3 {[%emt 0:01:08]} 54. Rd6 {[%emt 0:01:26]} Kf7 {[%emt 0:01:08]} 55. g5 {[%emt 0:01:39]} Rc4+ {[%emt 0:00:42]} 56. Ke5 {[%emt 0:00:01]} Rxb4 {[%emt 0:00:31]} 57. Rxa6 {[%emt 0:00:08]} Ra4 {[%emt 0:01:00]} 58. Rb6 {[%emt 0:00:10]} Ra7 {[%emt 0:00:49]} 59. Ke4 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.21"]
[White "Torngren, Gustav"]
[Black "Kudrytskyi, Stanislav"]
[Result "1-0"]
[ECO "A02"]
[WhiteElo "2228"]
[BlackElo "2057"]
[Annotator "ChessBase"]
[PlyCount "51"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. f4 {[%emt 0:00:47]} Nf6 {[%emt 0:00:35]} 2. Nf3 {[%emt 0:00:14]} d5 {[%emt 0:00:09]} 3. e3 {[%emt 0:00:33]} g6 {[%emt 0:00:13]} 4. Be2 {[%emt 0:00:43]} Bg7 {[%emt 0:00:08]} 5. d4 {[%emt 0:00:24]} O-O {[%emt 0:00:08]} 6. c3 {[%emt 0:01:18]} c5 {[%emt 0:02:08]} 7. Ne5 {[%emt 0:00:24]} b6 {[%emt 0:02:27]} 8. Nd2 {[%emt 0:00:20]} Bb7 {[%emt 0:02:18]} 9. h4 {[%emt 0:01:06]} Nbd7 {[%emt 0:09:08]} 10. h5 {[%emt 0:00:27]} cxd4 {[%emt 0:01:15]} 11. exd4 {[%emt 0:00:40]} Ne4 {[%emt 0:01:15]} 12. Nxe4 {[%emt 0:04:33]} dxe4 {[%emt 0:00:02]} 13. hxg6 {[%emt 0:15:54]} hxg6 {[%emt 0:07:04]} 14. Nxg6 {[%emt 0:03:50]} fxg6 {[%emt 0:00:19]} 15. Bc4+ {[%emt 0:00:11]} Rf7 {[%emt 0:00:03]} 16. f5 {[%emt 0:00:28]} Nf6 {[%emt 0:34:14]} 17. fxg6 {[%emt 0:00:35]} Bd5 {[%emt 0:03:39]} 18. gxf7+ {[%emt 0:00:12]} Kxf7 {[%emt 0:01:36]} 19. Bxd5+ {[%emt 0:01:14]} Qxd5 {[%emt 0:00:18]} 20. Qb3 {[%emt 0:00:26]} e6 {[%emt 0:01:40]} 21. Qxd5 {[%emt 0:00:11]} exd5 {[%emt 0:00:01]} 22. Bf4 {[%emt 0:00:17]} Kg6 {[%emt 0:03:43]} 23. Be5 {[%emt 0:01:09]} Bf8 {[%emt 0:00:33]} 24. Bxf6 {[%emt 0:00:28]} Kxf6 {[%emt 0:00:02]} 25. Ke2 {[%emt 0:01:15]} Kg6 {[%emt 0:00:28]} 26. Rh8 {[%emt 0:00:58]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.22"]
[White "Skou, Niels"]
[Black "Novotny, Michal"]
[Result "0-1"]
[ECO "A58"]
[WhiteElo "2061"]
[BlackElo "2236"]
[Annotator "ChessBase"]
[PlyCount "120"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:02]} Nf6 {[%emt 0:07:52]} 2. c4 {[%emt 0:00:11]} c5 {[%emt 0:00:03]} 3. d5 {[%emt 0:00:21]} b5 {[%emt 0:00:02]} 4. cxb5 {[%emt 0:00:17]} a6 {[%emt 0:00:02]} 5. bxa6 {[%emt 0:00:13]} g6 {[%emt 0:00:04]} 6. Nc3 {[%emt 0:00:08]} Bg7 {[%emt 0:00:03]} 7. e4 {[%emt 0:00:32]} O-O {[%emt 0:00:04]} 8. a7 {[%emt 0:00:59]} Rxa7 {[%emt 0:00:02]} 9. Nf3 {[%emt 0:01:53]} e6 {[%emt 0:01:32]} 10. Be2 {[%emt 0:02:05]} exd5 {[%emt 0:00:53]} 11. exd5 {[%emt 0:00:07]} d6 {[%emt 0:00:29]} 12. O-O {[%emt 0:00:42]} Na6 {[%emt 0:00:13]} 13. Qb3 {[%emt 0:10:07]} Rd7 {[%emt 0:18:28]} 14. Rd1 {[%emt 0:09:15]} Bb7 {[%emt 0:02:01]} 15. Bf4 {[%emt 0:05:24]} Qa8 {[%emt 0:02:57]} 16. Rd2 {[%emt 0:05:21]} Nc7 {[%emt 0:09:30]} 17. Bc4 {[%emt 0:06:30]} Rb8 {[%emt 0:06:46]} 18. Qd1 {[%emt 0:00:57]} Ba6 {[%emt 0:01:45]} 19. Bxa6 {[%emt 0:01:16]} Qxa6 {[%emt 0:00:32]} 20. h3 {[%emt 0:04:08]} Rb4 {[%emt 0:14:24]} 21. Be3 {[%emt 0:05:03]} Nb5 {[%emt 0:02:03]} 22. Qf1 {[%emt 0:04:52]} Ra7 {[%emt 0:02:02]} 23. Nxb5 {[%emt 0:04:14]} Qxb5 {[%emt 0:03:24]} 24. Qxb5 {[%emt 0:01:43]} Rxb5 {[%emt 0:00:02]} 25. Bf4 {[%emt 0:03:57]} Ne4 {[%emt 0:04:06]} 26. Re2 {[%emt 0:00:52]} f5 {[%emt 0:00:59]} 27. Ng5 {[%emt 0:02:36]} Nxg5 {[%emt 0:05:13]} 28. Bxg5 {[%emt 0:00:05]} Rxb2 {[%emt 0:00:31]} 29. Rae1 {[%emt 0:05:13]} Rxe2 {[%emt 0:06:26]} 30. Rxe2 {[%emt 0:00:03]} Be5 {[%emt 0:00:07]} 31. Be3 {[%emt 0:00:40]} Rb7 {[%emt 0:01:37]} 32. f4 {[%emt 0:08:36]} Bg7 {[%emt 0:03:30]} 33. Rc2 {[%emt 0:06:18]} Rb4 {[%emt 0:02:11]} 34. Kf1 {[%emt 0:01:32]} c4 {[%emt 0:00:30]} 35. Ke2 {[%emt 0:01:28]} c3 {[%emt 0:00:38]} 36. Kd3 {[%emt 0:01:16]} Ra4 {[%emt 0:00:37]} 37. g3 {[%emt 0:01:08]} Kf7 {[%emt 0:00:31]} 38. Re2 {[%emt 0:00:52]} Bf6 {[%emt 0:01:17]} 39. h4 {[%emt 0:00:23]} Kg7 {[%emt 0:01:18]} 40. Bf2 {[%emt 0:01:40]} Ra3 {[%emt 0:00:55]} 41. Rc2 {[%emt 0:31:24]} Ra4 {[%emt 0:33:36]} 42. Re2 {[%emt 0:00:18]} Kf7 {[%emt 0:01:24]} 43. Be3 {[%emt 0:02:51]} Rb4 {[%emt 0:00:00]} 44. Bf2 {[%emt 0:00:00]} Rb1 {[%emt 0:00:00]} 45. Be3 {[%emt 0:00:00]} Ra1 {[%emt 0:00:00]} 46. Kc4 {[%emt 0:00:00]} Rb1 {[%emt 0:00:00]} 47. Kd3 {[%emt 0:00:00]} Kg7 {[%emt 0:00:00]} 48. Kc4 {[%emt 0:00:00]} Kh6 {[%emt 0:00:00]} 49. a4 {[%emt 0:00:00]} Kh5 {[%emt 0:00:00]} 50. a5 {[%emt 0:00:00]} Rb2 {[%emt 0:00:00]} 51. Re1 {[%emt 0:00:00]} Ra2 {[%emt 0:01:49]} 52. Kb5 {[%emt 0:00:00]} c2 {[%emt 0:00:02]} 53. a6 {[%emt 0:00:00]} Bb2 {[%emt 0:00:33]} 54. Kb6 {[%emt 0:03:40]} Ra3 {[%emt 0:01:37]} 55. Bd2 {[%emt 0:06:07]} Bd4+ {[%emt 0:01:12]} 56. Kb7 {[%emt 0:00:08]} Rd3 {[%emt 0:00:21]} 57. a7 {[%emt 0:00:50]} Bxa7 {[%emt 0:00:06]} 58. Kxa7 {[%emt 0:00:07]} Rxd2 {[%emt 0:00:05]} 59. Rc1 {[%emt 0:00:06]} Rxd5 {[%emt 0:00:26]} 60. Rxc2 {[%emt 0:00:09]} Rd3 {[%emt 0:00:35]} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.23"]
[White "Witte, Ronald"]
[Black "Cholleti Sahajasri"]
[Result "1/2-1/2"]
[ECO "E16"]
[WhiteElo "2025"]
[BlackElo "2235"]
[Annotator "TA"]
[PlyCount "164"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,164,22,20,19,0,0,0,11,0,0,-16,-13,-35,8,0,0,-27,0,0,0,-56,-38,-121,-47,-66,16,14,49,48,38,0,0,0,0,-98,-97,-89,-102,-113,-88,-95,-58,-69,-64,-80,-78,-83,-75,-72,-79,-79,-44,-118,-107,-116,-114,-114,-114,-114,-119,-118,-118,-97,-78,-114,-120,-153,-8,-8,-8,-8,-8,-8,-8,-44,-8,-8,-8,-8,-8,-8,-8,-8,0,-8,-8,-28,-8,-8,-8,-8,-8,-8,0,-8,-8,-8,-8,-8,0,-8,0,0,0,-8,-8,-19,-10,-17,-8,-8,-8,-19,-26,-51,-78,-78,-48,-49,-49,-56,-17,-25,-25,-25,-25,-53,-33,-66,-8,-8,0,0,0,0,0,0,0,0,8,8,8]} 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Qe7 5. g3 Nc6 6. Bg2 Bxd2+ 7. Nbxd2 O-O 8. O-O d6 9. e4 e5 10. d5 Nb8 11. b4 a5 12. a3 Na6 13. Ne1 {was the old line (13.Qb3).} c6 {E11: Bogo-Indian.} 14. Nd3 cxd5 15. cxd5 {Black should prevent b5.} (15. exd5 Bf5 16. Nf3 axb4 17. axb4 Bxd3 18. Qxd3 Nxb4 $17) 15... axb4 16. axb4 Bg4 17. Bf3 Bd7 18. Qb3 Bb5 {[#]} (18... Nc7 $15) 19. Nc4 $146 ({Predecessor:} 19. Be2 Rfc8 20. Rfc1 Qd8 21. Nf4 Nc7 22. Bxb5 Nxb5 23. Ne2 Rxc1+ 24. Rxc1 h5 25. Qb2 {0-1 (34) Adelberg,D (2158)-Small,G (2285) Las Vegas 2009}) 19... Nc7 20. Na3 Ra6 21. Rfc1 Rfa8 {[%cal Oc7d5]} 22. Kg2 (22. Ne1 $11) 22... Nfe8 (22... Bxd3 {looks sharper.} 23. Qxd3 Ncxd5 24. exd5 e4 25. Bxe4 Qxe4+ 26. Qxe4 Nxe4 27. Nc2 Rxa1 28. Nxa1 g6) 23. Nc2 (23. Bd1 $15) 23... Ba4 (23... Rxa1 $17 24. Rxa1 Rxa1 25. Nxa1 f5) 24. Qb2 $15 Nb5 ({Don't play} 24... Bxc2 25. Rxa6 Rxa6 26. Qxc2 $11 (26. Rxc2 Ra8 $11)) (24... f5 $1 $15 25. Ne3 fxe4 26. Bxe4 Nf6) 25. Nde1 $11 Qd7 26. Be2 R6a7 27. Bxb5 Bxb5 28. Rxa7 Rxa7 29. Ra1 (29. Na3 $11 {keeps the balance.}) 29... Rxa1 $17 30. Qxa1 f5 31. exf5 Qxf5 32. f3 {To avoid Qe4} e4 {...exf3+ is the strong threat.} 33. Ne3 $1 exf3+ $1 34. Nxf3 {[#]} Qd3 ({Much worse is} 34... Qe4 $6 35. Qd4 Bd3 36. Qxe4 Bxe4 37. Kf2 $11) 35. Qf1 Qxe3 36. Qxb5 {[#]} Qe4 $1 37. Qd7 {[%cal Og2h3]} Kf8 (37... Qe2+ {keeps more tension.} 38. Kh3 Nf6 39. Qf5 Qf1+ 40. Kh4 Qc4+) 38. Qe6 ({Better is} 38. g4 $1 $15) 38... Qxe6 39. dxe6 {[%mdl 4096] Endgame KN-KN} Ke7 40. Nd4 g6 41. Kf3 Nc7 42. Ke4 Kf6 43. Nf3 h6 ({Much weaker is} 43... Kxe6 $6 44. Ng5+ Ke7 45. Nxh7 $15) 44. Kd4 Kxe6 45. g4 b5 ({Black should play} 45... Nd5 $17 46. g5 h5) 46. g5 $11 h5 47. Nh4 Kf7 48. Nf3 Na6 49. Kd5 Nxb4+ (49... Ke7 $5 {[%cal Ra6b4]} 50. Kc6 Nxb4+ 51. Kxb5 Nd5 $17) 50. Kxd6 Nd3 {Strongly threatening ...b4.} 51. Kd5 Nf4+ 52. Ke4 Ne6 53. Kd5 Nf4+ 54. Ke4 Nh3 55. Ne5+ Kg7 56. Nf3 b4 57. Kd4 Nf4 58. Ke4 Nh3 59. Kd4 b3 60. Kc3 Kf7 61. Ne5+ Kg7 62. Nf3 Nf4 63. Kxb3 Kf7 64. Kc4 Ke6 65. Kd4 Kf5 66. Ke3 Nh3 67. Nd4+ Kg4 68. Ne2 Nxg5 69. Kf2 Ne6 70. Ng1 Nd4 71. Ke3 Nf5+ 72. Kf2 g5 73. h3+ Kf4 {aiming for ...Nd4.} 74. Ne2+ Ke4 75. Nc3+ Kd4 76. Nb5+ Kd3 (76... Ke5 $15 77. Nc3 Kd4 78. Nb5+ Ke4) 77. Nc7 {The position is equal.} Nd4 78. Nd5 Ne6 79. Nf6 Nf4 80. Kf3 Kd4 81. h4 gxh4 82. Kxf4 h3 {Weighted Error Value: White=0.15 (very precise) /Black=0.16 (very precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "2.24"]
[White "Hrbek, Stepan"]
[Black "Finn, Peter"]
[Result "1/2-1/2"]
[ECO "A28"]
[WhiteElo "2179"]
[BlackElo "2020"]
[Annotator "ChessBase"]
[PlyCount "150"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. c4 {[%emt 0:00:24]} e5 {[%emt 0:00:57]} 2. Nc3 {[%emt 0:00:05]} Nf6 {[%emt 0:00:06]} 3. Nf3 {[%emt 0:00:04]} Nc6 {[%emt 0:00:04]} 4. e3 {[%emt 0:00:04]} Bb4 {[%emt 0:00:22]} 5. Qc2 {[%emt 0:00:18]} Bxc3 {[%emt 0:00:13]} 6. bxc3 {[%emt 0:01:21]} O-O {[%emt 0:00:30]} 7. e4 {[%emt 0:00:03]} d6 {[%emt 0:00:34]} 8. g3 {[%emt 0:00:17]} a6 {[%emt 0:01:33]} 9. Bg2 {[%emt 0:09:20]} b5 {[%emt 0:01:10]} 10. O-O {[%emt 0:01:43]} bxc4 {[%emt 0:26:46]} 11. Qa4 {[%emt 0:00:06]} Qd7 {[%emt 0:00:52]} 12. Qxc4 {[%emt 0:01:48]} a5 {[%emt 0:01:05]} 13. Qa4 {[%emt 0:06:15]} Ba6 {[%emt 0:08:49]} 14. Re1 {[%emt 0:01:51]} Rab8 {[%emt 0:22:06]} 15. Qc2 {[%emt 0:00:34]} Rfe8 {[%emt 0:03:15]} 16. d3 {[%emt 0:01:22]} h6 {[%emt 0:05:49]} 17. c4 {[%emt 0:05:05]} Nb4 {[%emt 0:07:44]} 18. Qd1 {[%emt 0:01:36]} c5 {[%emt 0:00:23]} 19. a3 {[%emt 0:06:27]} Nc6 {[%emt 0:00:05]} 20. Bd2 {[%emt 0:00:04]} Qc7 {[%emt 0:01:29]} 21. Qc2 {[%emt 0:18:53]} Bc8 {[%emt 0:00:30]} 22. Reb1 {[%emt 0:02:26]} Bd7 {[%emt 0:03:05]} 23. Rb5 {[%emt 0:01:16]} a4 {[%emt 0:03:22]} 24. Rab1 {[%emt 0:00:52]} Ne7 {[%emt 0:03:37]} 25. R5b2 {[%emt 0:03:51]} Nh7 {[%emt 0:00:28]} 26. Bf1 {[%emt 0:04:04]} Nf8 {[%emt 0:00:21]} 27. Be2 {[%emt 0:00:38]} Ne6 {[%emt 0:00:34]} 28. Bd1 {[%emt 0:00:46]} Nc6 {[%emt 0:04:28]} 29. Qc3 {[%emt 0:04:48]} Ncd4 {[%emt 0:02:13]} 30. Qa5 {[%emt 0:03:34]} Qxa5 {[%emt 0:00:04]} 31. Bxa5 {[%emt 0:00:08]} Rxb2 {[%emt 0:00:10]} 32. Rxb2 {[%emt 0:00:05]} Nxf3+ {[%emt 0:00:35]} 33. Bxf3 {[%emt 0:00:05]} Ra8 {[%emt 0:00:39]} 34. Bc3 {[%emt 0:00:58]} Kf8 {[%emt 0:00:11]} 35. Bd1 {[%emt 0:03:46]} Ke7 {[%emt 0:00:18]} 36. Rb6 {[%emt 0:00:10]} Nd8 {[%emt 0:01:54]} 37. f4 {[%emt 0:00:54]} f6 {[%emt 0:00:24]} 38. Kf2 {[%emt 0:04:16]} Nc6 {[%emt 0:00:45]} 39. Rb2 {[%emt 0:01:36]} Kd8 {[%emt 0:01:27]} 40. f5 {[%emt 0:03:33]} Kc7 {[%emt 0:00:49]} 41. h4 {[%emt 0:36:34]} Rb8 {[%emt 0:12:08]} 42. Rxb8 {[%emt 0:00:00]} Nxb8 {[%emt 0:00:26]} 43. g4 {[%emt 0:00:00]} Kd8 {[%emt 0:01:15]} 44. g5 {[%emt 0:00:00]} hxg5 {[%emt 0:00:06]} 45. hxg5 {[%emt 0:00:00]} Ke7 {[%emt 0:00:51]} 46. Kg3 {[%emt 0:00:00]} Bc6 {[%emt 0:12:07]} 47. Kh4 {[%emt 0:00:00]} Nd7 {[%emt 0:01:25]} 48. Kh5 {[%emt 0:00:00]} fxg5 {[%emt 0:00:27]} 49. Ba5 {[%emt 0:00:00]} Nf6+ {[%emt 0:00:37]} 50. Kg6 {[%emt 0:00:00]} Kf8 {[%emt 0:00:59]} 51. Bd8 {[%emt 0:00:00]} Be8+ {[%emt 0:00:29]} 52. Kxg5 {[%emt 0:00:00]} Nh7+ {[%emt 0:00:49]} 53. Kh4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:22]} 54. Bf3 {[%emt 0:00:00]} Bf7 {[%emt 0:02:31]} 55. Be2 {[%emt 0:00:00]} Ke8 {[%emt 0:00:33]} 56. Bxf6 {[%emt 0:00:00]} gxf6 {[%emt 0:00:18]} 57. Bd1 {[%emt 0:00:00]} Kd8 {[%emt 0:01:40]} 58. Bxa4 {[%emt 0:00:00]} Kc7 {[%emt 0:00:34]} 59. Bb5 {[%emt 0:06:56]} Kb6 {[%emt 0:00:38]} 60. Bd7 {[%emt 0:00:19]} Ka5 {[%emt 0:00:27]} 61. Kg4 {[%emt 0:03:37]} Kb6 {[%emt 0:00:19]} 62. Ba4 {[%emt 0:03:23]} Ka5 {[%emt 0:00:25]} 63. Bd7 {[%emt 0:00:32]} Kb6 {[%emt 0:00:06]} 64. Kf3 {[%emt 0:00:05]} Bh5+ {[%emt 0:00:45]} 65. Ke3 {[%emt 0:00:04]} Ka5 {[%emt 0:00:27]} 66. Kd2 {[%emt 0:00:05]} Bf7 {[%emt 0:00:25]} 67. Kc3 {[%emt 0:00:55]} Bh5 {[%emt 0:00:09]} 68. Be6 {[%emt 0:00:26]} Be8 {[%emt 0:00:42]} 69. Bg8 {[%emt 0:00:08]} Bh5 {[%emt 0:00:31]} 70. Bd5 {[%emt 0:00:32]} Be8 {[%emt 0:00:22]} 71. Be6 {[%emt 0:00:05]} Bh5 {[%emt 0:00:09]} 72. Bd7 {[%emt 0:00:06]} Bf7 {[%emt 0:00:17]} 73. Kd2 {[%emt 0:00:13]} Bh5 {[%emt 0:00:16]} 74. Ke1 {[%emt 0:00:07]} Bf7 {[%emt 0:00:14]} 75. Ke2 {[%emt 0:00:12]} Bh5+ {[%emt 0:00:05]} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.1"]
[White "Urkedal, Frode Olav Olsen"]
[Black "Lim, Zhuo Ren"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2553"]
[BlackElo "2311"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,89,1,32,30,35,35,40,32,39,40,33,36,33,29,47,16,23,8,23,0,0,0,71,66,58,76,91,90,90,104,109,114,104,24,16,8,11,8,10,10,19,15,15,25,25,20,119,9,8,8,11,8,8,8,8,8,8,8,8,8,8,8,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e4 {[%cal Be2e4,Be4e5][%mdl 32]} b5 (5... Bb4 $5 {[%cal Rf6e4]}) 6. e5 {D24: Queen's Gambit Accepted: 3 Nf3 Nf6 4 Nc3.} Nd5 7. Nxb5 Nb6 8. Be2 {White is slightly better.} Nc6 9. O-O Be7 10. Nc3 {10.Qd2 is setting a new trend.} O-O 11. Be3 Rb8 12. a3 Bb7 13. Qc2 Na5 {[#]} 14. Ne4 $146 ({Predecessor:} 14. Rad1 h6 15. Nd2 Qd7 16. f4 Nd5 17. Nxd5 Bxd5 18. Qc3 Rb5 19. Nxc4 Nxc4 20. Bxc4 Bxc4 21. Qxc4 Rxb2 {½-½ (61) Mamedyarov,S (2801)-Caruana,F (2822) Saint Louis 2018}) 14... h6 15. Nfd2 Nd5 (15... Nc6 $11) 16. Nxc4 $16 {White is more active.} ({Reject} 16. Bxc4 Nxc4 17. Nxc4 Qd7 $11) 16... Nxc4 17. Bxc4 Nxe3 18. fxe3 Bxe4 19. Qxe4 {Threatens to win with Rf2.} Rxb2 20. Rf3 {And now Raf1 would win.} ({But not} 20. Bd3 g6 $11) 20... Qa8 21. d5 (21. Qxa8 $16 Rxa8 22. Raf1) 21... Rd2 $1 $11 {[%cal Re6d5]} 22. Bd3 {[%csl Gd3][%cal Re4h7]} g6 23. Rg3 {[%cal Og3g6] White wants to mate with Rxg6+!} Bg5 (23... Qxd5 $2 {gets mated.} 24. Rxg6+ $1 {[%mdl 512]} fxg6 25. Qxg6+ Kh8 26. Qh7#) 24. dxe6 Qxe4 25. Bxe4 Re8 26. exf7+ Kxf7 27. Rf1+ Kg7 {[#]} (27... Ke6 $11 {keeps the balance.}) 28. Rc1 (28. h4 $1 $16 {[%cal Rh4g5]} Rxe5 29. hxg5 Rxe4 30. gxh6+ Kh7 31. Rf7+ Kxh6 32. Rf6) 28... Rxe5 {The position is equal.} 29. Rxc7+ Kg8 {[#]} 30. h4 $1 Rd1+ 31. Kh2 Rxe4 32. hxg5 {[%mdl 4096] Endgame KRR-KRR} Rh4+ 33. Rh3 hxg5 34. Rxh4 gxh4 35. Rxa7 {KR-KR} Rd3 36. Kh3 g5 37. Kg4 Rxe3 38. Kxg5 Rg3+ 39. Kxh4 Rxg2 40. Re7 Kf8 41. Re3 Rg7 42. a4 (42. Rb3 $5 {[%cal Rb3b8]} Ra7 43. Kg5 $11) 42... Re7 43. Ra3 Ra7 44. Kg5 Ke7 45. Kf5 {Weighted Error Value: White=0.11 (very precise) /Black=0.12 (very precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.2"]
[White "Acor, Corey"]
[Black "Pijpers, Arthur"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "2303"]
[BlackElo "2485"]
[Annotator "TA"]
[PlyCount "42"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,42,0,0,0,-5,-9,-4,6,34,-102,-90,-118,-119,-119,-114,-106,-109,-248,-258,-576,-505,-701,-693,-1209,-1137,-29980,-29980,-29980,-29981,-29989,-29990]} 1. e4 c5 2. Nc3 e6 3. g3 Nc6 4. Bg2 Nf6 5. d3 d5 6. exd5 exd5 7. Bg5 Be7 8. Bxf6 {B24: Closed Sicilian: 3 g3 sidelines.} Bxf6 9. Nxd5 O-O (9... Bxb2 $5 10. Rb1 Be6 $11) 10. c3 {[#] The position is equal.} Ne5 $146 {[%cal Bc6e5,Be5d3,Bd3b2][%mdl 32]} ({Predecessor:} 10... Re8+ 11. Ne2 Bg4 12. Ne3 Bh5 13. Qd2 Ne5 14. Nf4 Nf3+ 15. Bxf3 Bxf3 16. O-O Qd7 17. Rfe1 g5 18. Nfg2 Qh3 19. d4 Re6 20. Qd3 Rae8 21. Qf5 Bxg2 {0-1 (21) Muender,M-Kunsztowicz,U Hamburg 1974}) 11. h3 (11. Ne2 $14 {keeps the upper hand.}) 11... Bf5 $17 12. Ne2 Nxd3+ 13. Kf1 Nxb2 {Black is more active.} 14. Qb3 {[%csl LRb2,LRb7]} Nd3 $36 {[%mdl 2048] Black has strong initiative.} 15. Qxb7 {Now White is beyond hope.} (15. Rd1 $17 {keeps fighting.}) 15... Rb8 $19 16. Qa6 (16. Qc7 {is more resistant.}) 16... Rb2 {Threatens to win with ...Re8.} 17. Rd1 Re8 {[%cal Bf8e8,Be8e2,Be2f2,Bf2f5][%mdl 32]} ({Not} 17... Qe8 $2 18. Bf3 Ne5 19. Qxf6 gxf6 20. Nxf6+ Kg7 21. Nxe8+ Rxe8 22. Ng1 $19) 18. Ne3 Bg5 19. Nxf5 Rexe2 {Black mates.} 20. Kg1 {[#]} Rxf2 $1 21. Be4 {[#]} (21. Bf3 Rxf3) 21... Rxf5 $1 {[%mdl 512] Weighted Error Value: White=1.39/Black=0.07 (flawless)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.3"]
[White "Mirzoev, Azer"]
[Black "Unneland, Mathias"]
[Result "1-0"]
[ECO "A16"]
[WhiteElo "2420"]
[BlackElo "2262"]
[Annotator "NA RC"]
[PlyCount "89"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. c4 {[%emt 0:01:14]} Nf6 {[%emt 0:00:42]} 2. Nc3 {[%emt 0:00:05]} e5 {[%emt 0:00:33]} 3. e3 {[%emt 0:00:17]} d5 {[%emt 0:02:42]} 4. cxd5 {[%emt 0:00:09]} Nxd5 {[%emt 0:00:07]} 5. Nf3 {[%emt 0:00:09]} Nc6 {[%emt 0:03:54]} 6. Bb5 {[%emt 0:05:17]} Nxc3 {[%emt 0:11:02]} 7. bxc3 {[%emt 0:00:37]} Bd6 {[%emt 0:04:42]} 8. d4 {[%emt 0:10:45]} e4 {[%emt 0:09:51]} 9. Nd2 {[%emt 0:00:43]} Qg5 {[%emt 0:00:34]} 10. Qa4 {[%emt 0:02:09]} Bd7 {[%emt 0:04:46]} 11. g3 {[%emt 0:02:20]} a6 {[%emt 0:01:44]} 12. Be2 {[%emt 0:01:50]} f5 {[%emt 0:09:55]} 13. Qb3 {[%emt 0:01:57]} Nd8 {[%emt 0:10:36]} 14. Ba3 {[%emt 0:01:41]} Bxa3 {[%emt 0:02:14]} 15. Qxa3 {[%emt 0:00:05]} Qe7 {[%emt 0:00:41]} 16. Qb3 {[%emt 0:02:17]} Be6 {[%emt 0:00:53]} 17. Bc4 {[%emt 0:00:58]} O-O {[%emt 0:02:52]} 18. a4 {[%emt 0:00:17]} Bxc4 {[%emt 0:07:56]} 19. Nxc4 {[%emt 0:01:20]} Qe6 {[%emt 0:00:31]} 20. Nd2 {[%emt 0:00:18]} Qxb3 {[%emt 0:03:40]} 21. Nxb3 {[%emt 0:00:05]} a5 {[%emt 0:01:21]} 22. Ke2 {[%emt 0:00:40]} Rf6 {[%emt 0:03:38]} 23. Rab1 {[%emt 0:02:05]} b6 {[%emt 0:06:03]} 24. h4 {[%emt 0:00:27]} Nb7 {[%emt 0:01:00]} 25. Rhc1 {[%emt 0:02:12]} Rc8 {[%emt 0:01:41]} 26. Rc2 {[%emt 0:08:40]} c5 {[%emt 0:02:11]} 27. Rcb2 {[%emt 0:03:58]} cxd4 {[%emt 0:01:20]} 28. cxd4 {[%emt 0:00:04]} Rc4 {[%emt 0:00:41]} 29. Nd2 {[%emt 0:01:05]} Rxa4 {[%emt 0:00:39]} 30. Rxb6 {[%emt 0:00:40]} Rxb6 {[%emt 0:00:06]} 31. Rxb6 {[%emt 0:00:10]} Rb4 {[%emt 0:00:06]} 32. Ra6 {[%emt 0:00:41]} Kf7 {[%emt 0:01:10]} 33. Kd1 {[%emt 0:00:12]} Ke7 {[%emt 0:02:43]} 34. Kc2 {[%emt 0:00:18]} Kd7 {[%emt 0:00:36]} 35. Kc3 {[%emt 0:01:03]} Ra4 {[%emt 0:02:04]} 36. Nc4 {[%emt 0:05:31]} Ra2 {[%emt 0:01:15]} 37. d5 {[%emt 0:06:59]} Rxf2 {[%emt 0:00:51]} 38. Ne5+ {[%emt 0:00:12]} Ke7 {[%emt 0:01:31]} 39. Ra7 {[%emt 0:03:13]} Kd6 {[%emt 0:00:10]} 40. Nc4+ {[%emt 0:00:29]} Kxd5 {[%emt 0:00:34]} 41. Rxb7 {[%emt 0:30:06]} g6 {[%emt 0:30:10]} 42. Rxh7 {[%emt 0:12:48]} Rg2 {[%emt 0:01:03]} 43. Ra7 {[%emt 0:02:19]} Rxg3 {[%emt 0:00:00]} 44. Rxa5+ {[%emt 0:00:00]} Ke6 {[%emt 0:00:00]} 45. Kd4 {[%emt 0:00:00]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.4"]
[White "Torngren, Gustav"]
[Black "Neuman, Petr"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2228"]
[BlackElo "2402"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,92,38,24,10,17,16,16,0,0,-2,0,-5,0,-17,-24,-3,-22,-36,-30,-37,-25,-75,-6,-12,-13,-21,-27,-18,0,0,0,0,15,8,20,10,60,74,57,51,60,4,37,0,18,-11,-11,-10,-12,-19,0,-25,0,0,0,0,1,-2,36,-145,-163,-193,-204,-541,-543,-535,-530,-529,-533,-521,-536,-536,-534,-546,-529,-562,-557,-529,-481]} 1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} O-O 7. a5 c6 8. O-O Rb8 9. Re1 {C41: Philidor Defence.} b5 10. axb6 axb6 11. Bf1 {The position is equal.} b5 12. b3 Bb7 13. Bb2 Qc7 14. g3 Rfe8 15. Bg2 Bf8 {[#]} 16. dxe5 $146 ({Predecessor:} 16. Nb1 Ra8 17. Nbd2 Rxa1 18. Qxa1 g6 19. Bc3 Ra8 20. Qb2 exd4 21. Bxd4 Bg7 22. e5 dxe5 23. Nxe5 {1-0 (30) Zapata,A (2505)-Andonov,B (2450) Camaguey 1987}) 16... dxe5 17. Qe2 Nc5 18. Nb1 (18. Nh4 $11) 18... Nfd7 ({Much worse is} 18... Nfxe4 19. b4 Na4 20. Rxa4 (20. Qxe4 Nxb2 21. Ng5 g6 $17) 20... bxa4 21. Qxe4 $11) (18... Ncxe4 $17 {Strongly threatening ...Bc5.} 19. Nbd2 Nxd2 20. Qxd2 Rbd8) 19. Nbd2 $11 f6 20. h4 Ne6 21. Nf1 Bc5 22. Red1 Ndf8 23. c3 Rbd8 24. b4 Be7 25. Ne3 g6 ({Black should play} 25... Nd7 $11) 26. h5 Rxd1+ 27. Rxd1 Rd8 28. Nh4 (28. Ra1 $14) 28... Bc8 29. hxg6 (29. Rf1 {looks sharper.} Ng7 30. Bf3 Nge6 31. Bc1 Ng5 32. Bg2) 29... hxg6 30. Qc2 Rxd1+ 31. Qxd1 Ng5 32. Qc2 Be6 33. Nf3 {[%cal Bh4f3,Bf3e1,Be1d3][%mdl 32]} Nfh7 {[%cal Bf8h7,Bh7g5,Bg5f3,Bf3g1][%mdl 32]} 34. Ne1 Bf8 35. Nd3 Qa7 36. c4 Nh3+ 37. Kh2 $2 (37. Bxh3 $14 {keeps the upper hand.} Bxh3 38. cxb5) 37... N7g5 $17 {Black is more active.} 38. cxb5 Qh7 {...Nf4+ is the strong threat.} 39. bxc6 $2 {[#]} (39. b6 Nxf2+ 40. Kg1 Nfh3+ 41. Bxh3 (41. Kf1 Qb7 $17) 41... Nxh3+ 42. Kf1) 39... Nf4+ $1 $19 {Black is clearly winning.} ({Not} 39... Nxf2+ 40. Kg1 Nxd3 41. Qxd3 $14) 40. Kg1 Nxg2 41. Nxg2 {And now Nh4 would win.} Nf3+ 42. Kf1 {[%cal Og2h4]} Qh1+ 43. Ke2 Qxg2 44. c7 Ng1+ 45. Kd2 Bh6+ 46. Kc3 Qxe4 {Weighted Error Value: White=0.27 (precise) /Black=0.09 (flawless)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.5"]
[White "Haring, Filip"]
[Black "Michalczak, Thomas"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "2398"]
[BlackElo "2218"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,63,22,32,19,36,6,49,18,22,16,23,0,0,0,2,0,11,18,38,49,50,14,14,13,19,-25,0,0,5,0,0,0,192,187,424,407,800,881,868,852,1110,1077,5229,5229,29979,754,29980,29981,29992,29993,29993,29994]} 1. e4 c5 2. Nf3 {[%cal Bg1f3,Bf3d4,Bd4b3][%mdl 32]} e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. Qe2 $1 {7.Qe2 is better than 7.0-0.} d6 8. Nc3 {B42: Sicilian: Kan Variation: 5 Bd3.} Nf6 {[#] is the legacy move (8...Nc6).} 9. g4 $146 ({Predecessor:} 9. Be3 Qc7 10. f4 Nbd7 11. a4 Nc5 12. Nxc5 Bxc5 13. O-O Ng4 14. Bxc5 Qxc5+ 15. Kh1 {1-0 (34) Dervishi,E (2506)-Mateo,R (2403) Turin 2006}) 9... h6 (9... b5 $11 {is superior.}) 10. f3 {White is slightly better.} b5 11. Be3 Nc6 12. O-O-O b4 13. Nb1 Ne5 14. h4 Bxe3+ 15. Qxe3 Qc7 16. Be2 Bb7 17. g5 Rc8 {[%csl Gc8][%cal Rc7c2] [#]} 18. c3 Nfd7 19. f4 (19. Qd4 $142) 19... Nc4 20. Bxc4 Qxc4 21. Rd4 Qb5 22. Rxd6 {Strongly threatening Rhd1.} bxc3 $2 (22... hxg5 $1 $11 {and Black is okay.} 23. fxg5 Ne5) 23. Nxc3 $18 Qa4 $2 (23... hxg5 24. Rhd1 gxf4) 24. Rhd1 Qxa2 (24... Qxe4 $142 25. Qxe4 Bxe4 26. Rxd7 hxg5 27. hxg5 Rh4) 25. Rxd7 {[%cal Oe3c5]} Qxb3 26. Qd4 {White threatens Rd8+ and mate.} O-O 27. gxh6 {[%csl Gh6][%cal Rd4g7]} e5 28. Qxe5 {[%csl Gh6][%cal Re5g7]} f6 29. Rxg7+ ({Inferior is} 29. Qe7 Rxc3+ 30. bxc3 Qxc3+ 31. Kb1 Qb3+ 32. Kc1 (32. Ka1 Qc3+ 33. Kb1 Qb3+ 34. Kc1 Qc3+ 35. Kb1 $11) 32... Qc3+ 33. Kb1 Qb3+ 34. Kc1 (34. Ka1 Qc3+ 35. Kb1 $11) 34... Qc3+ $11) 29... Kh8 {[#]} 30. Rdd7 $1 {[%mdl 512] White mates.} Bxe4 (30... Rf7 31. Rdxf7) 31. Qxe4 {[%csl Gd7,Gg7][%cal Re4h7]} Rxc3+ 32. Kb1 {Weighted Error Value: White=0.10 (very precise) /Black=0.64} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.6"]
[White "Novotny, Michal"]
[Black "Jurcik, Marian"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2236"]
[BlackElo "2397"]
[Annotator "TA"]
[PlyCount "41"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,41,15,15,21,12,10,5,0,-1,10,0,12,-21,-1,-12,-7,-21,-20,-25,-26,-22,-8,-8,-8,-63,-44,-52,-40,-102,-26,-35]} 1. e4 c5 2. Nf3 e6 3. g3 Nc6 4. Bg2 Nf6 5. Qe2 d6 6. O-O Be7 7. c3 e5 {C00: French: Unusual White 2nd moves.} 8. Na3 (8. Rd1 $5 {[%cal Rd2d4]}) 8... O-O 9. d3 Re8 {The position is equal.} 10. Nc4 b5 11. Ne3 {[#]} Bf8 $146 ({Predecessor:} 11... Rb8 12. Nh4 Bf8 13. h3 g6 14. Kh2 b4 15. Bf3 Be6 16. Ng4 Nxg4+ 17. Bxg4 d5 18. Bxe6 Rxe6 {1-0 (64) Leisch,L (2401)-Ruff,M (2284) Innsbruck 2021}) 12. Nh4 Bd7 13. Bd2 Rb8 14. Be1 g6 15. f4 exf4 16. gxf4 Bg7 {[%cal Od6d5]} 17. Bf3 d5 {[%cal Rd5e4,Bd6d5,Bd5d4][%mdl 32]} 18. Qg2 (18. e5 $1 $11) 18... d4 $15 19. Nc2 Qc8 20. Qd2 (20. Qg3 $15) 20... Bg4 ({Better is} 20... Bh3 $17 21. Bg2 Bxg2 22. Qxg2 Qd7 23. cxd4 Nxd4 24. Nxd4 Qxd4+ 25. Bf2 Qxb2) 21. cxd4 {Weighted Error Value: White=0.16 (very precise) /Black=0.11 (very precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.7"]
[White "Vojta, Jakub"]
[Black "Blahynka, Martin"]
[Result "1-0"]
[ECO "A15"]
[WhiteElo "2289"]
[BlackElo "2399"]
[Annotator "TA"]
[PlyCount "127"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,127,24,14,10,17,16,-11,8,25,56,43,89,55,124,122,117,120,109,106,137,138,126,107,124,122,158,0,0,18,23,20,14,25,143,142,139,158,141,54,92,64,138,144,156,144,143,120,128,130,228,24,106,39,43,39,30,14,20,15,37,52,82,88,92,90,153,156,181,0,139,101,154,156,427,419,526,246,239,237,217,224,286,276,341,314,824,0,254,167,387,383,1308,1407,661,668,1586,4632,1380,668,668,661,654,588,29971,29973,29974,29975,29971,29961,29979,29979,29981,29982,29982,29983]} 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 Be7 5. b3 d4 6. Bb2 Nc6 7. O-O O-O 8. e3 {[%cal Re3d4]} e5 {A14: English Opening: 1...e6 with b3 by White.} 9. exd4 exd4 10. Na3 {is the legacy move (10.d3).} Bf5 {The position is equal.} 11. d3 Bc5 12. Nc2 $1 Qd7 {[#]} (12... a5 $14) 13. Re1 $146 ({Predecessor:} 13. b4 Nxb4 14. Nxb4 Bxb4 15. Nxd4 Bg4 16. Bf3 Rad8 17. Nc2 Be7 18. d4 c6 19. Ne3 {1-0 (33) Wintzer,J (2260)-Astengo,C (2114) Tegernsee 2018}) 13... Rae8 ({Black should try} 13... a5 $14) 14. Qd2 $16 Qd6 15. a3 {b4 is the strong threat.} a5 {To avoid b4} 16. Nh4 Bg4 17. Bxc6 Qxc6 18. b4 axb4 19. axb4 Qb6 20. Qg5 (20. Rxe8 $16 Rxe8 21. Qg5) 20... Rxe1+ $1 $11 21. Rxe1 Bxb4 {This bishop pair is nice.} 22. Bxd4 h6 23. Qf4 $40 {[%mdl 128] White is up to no good.} Bd6 {[#]} 24. Qxf6 $3 $16 {[%mdl 512]} gxf6 25. Bxb6 cxb6 26. Kg2 (26. Ne3 $16 Be6 27. d4) 26... Rd8 27. Ne3 Be6 (27... Bd7 $1 $14) 28. d4 $1 Kh7 29. Rb1 Bc7 30. d5 Bd7 31. Nhf5 b5 (31... h5 $16 32. Kf3 Kg6) 32. g4 $2 (32. Nd4 $1 $18) 32... Bb6 (32... h5 $11) 33. Nd6 {White is more active.} (33. Kf3 $16) 33... Bxe3 $14 34. fxe3 bxc4 35. Nxc4 Bxg4 {[%mdl 4096] Endgame KRB-KRN} 36. e4 Be2 37. Ne3 {[%mdl 1024] White has compensation.} Bd3 38. Rb4 b5 39. Kf3 Kg6 (39... Ra8 $142) 40. Rd4 $16 Bb1 41. Rb4 (41. Nf5 $18) 41... Bd3 42. Nf5 Kg5 (42... Bf1 $142) 43. h4+ $1 Kh5 $2 (43... Kg6 $16 44. Rb3 Bc4 45. h5+ Kxh5) 44. Rb2 $18 Rg8 45. Ng3+ (45. d6 $142) 45... Kg6 {[#]} (45... Kxh4 $2 46. Rh2+ Kg5 47. Rg2 $18) 46. Ke3 $1 Bc4 47. Kd4 Rc8 48. Nf5 Kh5 49. Rg2 {Inhibits Rg8.} Bb3 $2 (49... Ra8 50. Rg7 Ra7) 50. Rb2 $2 (50. Ke3 {aiming for Kf4.} Rc1 51. d6 Re1+ 52. Re2) 50... Bc4 $1 51. Nd6 Rf8 (51... Rd8) 52. Nxb5 ({Weaker is} 52. Nxc4 bxc4 53. Kxc4 Kxh4 $18) 52... Bxb5 (52... Bf1 53. Nd6 Kg6) 53. Rxb5 Kxh4 {[#] KR-KR} 54. d6 $1 {Strongly threatening Rf5.} Kg4 55. Rf5 h5 56. Kd5 (56. Rxf6 $142 h4 57. e5) 56... h4 57. Rxf6 {Black must now prevent d7.} h3 58. Rh6 {To avoid Rh8. Hoping for d7.} Kg3 59. d7 {White mates.} Ra8 60. Rh7 Ra1 61. Kd6 ({Inferior is} 61. Rxh3+ Kxh3 62. Kd6 Ra6+ 63. Ke7 Ra8 $11) 61... Kf4 62. Ke7 Rd1 63. d8=Q Rxd8 64. Rxf7+ {Weighted Error Value: White=0.44/Black=0.49} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.8"]
[White "Fus, Jakub"]
[Black "Stanojevic, Ilija"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2384"]
[BlackElo "2190"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,59,54,64,64,114,117,109,87,79,66,112,116,153,140,147,153,164,159,166,163,189,174,214,211,224,134,236,266,242,223,381,363,405,389,451,451,685,585,767,715,731,678,991,968,1278,1269,1198,1149,1694,1560,1227,1037]} 1. Nf3 e6 2. c4 f5 3. Nc3 Nf6 4. d4 {[%cal Bd2d4,Bd4d5][%mdl 32]} d6 5. Qc2 Be7 6. e4 {A85: Dutch Defence: 2 c4 Nf6 3 Nc3.} Nc6 {[#]} (6... fxe4 $14 7. Nxe4 Nxe4 8. Qxe4 d5) 7. exf5 $146 ({Predecessor:} 7. a3 a5 8. Bd3 e5 9. dxe5 dxe5 10. exf5 O-O 11. O-O Nd4 12. Nxd4 exd4 13. Ne4 Nxe4 14. Bxe4 {1-0 (36) Mendes,M (2003)-Goncalves,G (1617) Caparica 2017}) 7... exf5 8. d5 {White is better.} Ne5 9. Nd4 g6 (9... O-O $14) 10. f4 Neg4 11. h3 Nh6 12. Be3 $36 {[%mdl 2048] Black is under strong pressure. White is more active.} Nh5 13. O-O-O Ng3 14. Rg1 Nxf1 15. Rdxf1 O-O 16. Re1 Bf6 {[#]} 17. Bf2 ({Better is} 17. Ne6 $1 $18 {[%cal Re6d8]} Bxe6 18. dxe6) 17... Re8 {[#]} (17... Bxd4 $16 {was worth a try.} 18. Bxd4 c5) 18. Ne6 $1 $18 Bxe6 19. dxe6 {Threatens to win with g4.} ({Resist} 19. Rxe6 $6 c6 $16) 19... c6 $2 (19... Kh8 20. Qd2 c6) 20. g4 fxg4 21. hxg4 d5 22. f5 {White is clearly winning.} Qd6 (22... d4 $142 23. Ne4 Bg7) 23. Be3 g5 24. Qd2 {[%csl LRd5,LRg5]} Qe7 25. cxd5 Red8 26. Bd4 cxd5 27. Bxf6 Qxf6 28. Nxd5 Rac8+ 29. Kb1 Qg7 30. f6 {Black did not feel at home in the position after the opening.  Weighted Error Value: White=0.12 (very precise) /Black=0.60} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.9"]
[White "Zadrapa, Radek"]
[Black "Kozak, Antoni"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2021"]
[BlackElo "2356"]
[Annotator "TA"]
[PlyCount "40"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,40,12,17,-14,-16,-3,-5,-23,-18,-27,-14,-35,-29,-64,-47,-48,-56,-58,-58,-60,-53,-92,-77,-232,-230,-376,-279,-271,-275,-343,-346,-358,-341]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Nbd2 {[%cal Bb1d2,Bd2b3,Bb3d4][%mdl 32]} c5 6. dxc5 {B12: Caro-Kann: Advance Variation.} Bxc5 7. Nb3 Bb6 8. Nbd4 {The position is equal.} Bg4 9. c3 Nd7 10. Qa4 Ne7 {[%cal Bg8e7,Be7g6,Bg6e5,Be5d3][%mdl 32]} 11. Bg5 {[#]} O-O $146 ({Predecessor:} 11... h6 12. Bh4 Bxf3 13. Nxf3 Qc7 14. Bb5 g5 15. Bg3 O-O-O 16. Bxd7+ Qxd7 17. Qxd7+ Kxd7 {½-½ (46) Hladecek,M (2283)-Sykora,J (2399) ICCF email 2004}) 12. Nc6 bxc6 13. Qxg4 Qe8 14. Bd3 {Strongly threatening Bxe7.} Ng6 15. Qh5 Bc7 16. Bf4 $2 {[#] Now White is beyond hope.} f5 $1 $19 {[%cal Bf7f5,Bf5f4][%mdl 32]} 17. Bg3 (17. Bc1 $142) 17... Ngxe5 18. Qxe8 Nxd3+ {Pair of Knights!} ({Worse is} 18... Rfxe8 19. Nxe5 Bxe5 20. Bxe5 Nxe5 21. Kd2 $17) 19. Kd2 Rfxe8 {Chess con chili.} (19... Raxe8 $2 {loses.} 20. Bxc7 Nxb2 21. Rhe1) 20. Kxd3 f4 {Weighted Error Value: White=0.36/Black=0.07 (flawless)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.10"]
[White "Panjer, Sydney"]
[Black "Van Osch, Mees"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "1469"]
[BlackElo "2364"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,78,22,28,44,12,35,39,52,45,54,54,87,1,9,1,7,-11,-10,-14,0,0,0,-33,-12,-45,-41,-40,-47,-41,8,-33,0,-122,0,0,0,0,0,0,0,-108,-64,-58,0,0,0,-225,-223,-195,-172,-235,-203,-248,-227,-386,-363,-402,-402,-395,-368,-342,0,-332,0,-311,-285]} 1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 g6 5. b3 Bg7 6. Bb2 O-O 7. O-O d6 8. d4 Nbd7 {[%cal Bb8d7,Bd7f6,Bf6g4][%mdl 32] A15: English Opening: 1...Nf6.} 9. Nc3 e5 10. d5 Qe7 {White is slightly better.} 11. e4 {[#]} Ng4 $146 ({Predecessor:} 11... Nc5 12. Qc2 a5 13. a3 c6 14. b4 Ncd7 15. dxc6 Bxc6 16. Rfd1 axb4 17. axb4 Rxa1 18. Bxa1 {1-0 (34) Zgadzaj,R (2194)-Siwiec,B (2234) Polanica Zdroj 2004}) 12. Bh3 Ndf6 13. Bxg4 (13. Ne1 $16 Nh6 14. Nd3) 13... Nxg4 $11 14. Ne1 f5 15. Nd3 Bc8 16. Qe2 Bd7 17. f3 Nf6 {[%cal Ob6b5]} 18. b4 Bh6 19. Bc1 Bxc1 20. Raxc1 a5 21. a3 h5 (21... axb4 $15 22. axb4 fxe4 23. Nxe4 Nxe4 24. fxe4 Rxf1+ 25. Rxf1 h5) 22. Qe3 (22. exf5 $11 Bxf5 23. b5) 22... Kg7 {[%cal Oh5h4]} 23. Qg5 {[#]} (23. exf5 $1 $11 Bxf5 24. Ra1) 23... Qf7 (23... Nxd5 $1 $17 {[%mdl 512]} 24. Qxe7+ Nxe7) 24. exf5 Bxf5 25. Nf2 axb4 26. axb4 Ra3 27. Nfe4 (27. Qd2 $11) 27... Bh3 (27... Bxe4 $17 28. fxe4 Qd7) 28. Nxf6 $15 Bxf1 ({Black should play} 28... Qxf6 $15 29. Qxf6+ Rxf6) 29. Nce4 $11 {[#] Strongly threatening Nxh5+. Pair of Knights!} Rxf3 (29... Bd3 $2 30. Nxh5+ Kh8 31. Qh6+ Kg8 32. Nhf6+ Qxf6 33. Nxf6+ Rxf6 34. Qe3 $18) 30. Rxf1 (30. Nxh5+ $1 $11 {and White has nothing to worry.} Kh8 31. Nf4 exf4 32. Qh6+ Kg8 33. Ng5) 30... Rxf1+ $19 31. Kxf1 {And now Ke2 would win.} Qe7 {[%cal Rf8f6]} 32. Ke2 (32. h4 $142) 32... Rxf6 33. Nxf6 Qxf6 {[%mdl 4096] Endgame KQ-KQ} 34. Qd2 (34. h4 {keeps fighting.}) 34... Qf5 35. Qa2 Qe4+ 36. Kf2 Qd4+ 37. Kg2 Qe4+ 38. Kf2 Qd4+ 39. Kg2 e4 {Weighted Error Value: White=0.37/Black=0.48} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.11"]
[White "GARAT, CASSIUS"]
[Black "Carlsson, Ludvig"]
[Result "0-1"]
[ECO "D00"]
[BlackElo "2355"]
[Annotator "TA"]
[PlyCount "48"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,48,-8,6,0,16,-21,-25,-28,-16,-16,-17,-57,-32,-76,-28,-29,-14,-19,-28,-28,31,-91,-95,-101,-107,-174,-203,-198,-179,-492,-528,-524,-507,-530,-528,-527,-523,-522,-511,-583,-485]} 1. d4 d5 2. Nc3 Nf6 3. Bf4 c5 4. e3 cxd4 5. exd4 Bg4 6. f3 {B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack.} Bd7 7. Qd2 Nc6 {[#]} 8. O-O-O $146 {Black has an edge.} ({Predecessor:} 8. g4 e6 9. Nge2 Rc8 10. Nd1 Be7 11. g5 Nh5 12. Be3 Bd6 13. Nf2 Qb6 14. Nd3 {½-½ (33) Artemiev,V (2704)-So,W (2772) chess24.com INT 2021}) 8... Rc8 9. g4 e6 10. Bb5 Na5 {Hoping for ...Bxb5.} 11. Qd3 (11. Bd3 $15) 11... Nc4 ({Better is} 11... Bxb5 $17 12. Qxb5+ Nd7) 12. Bxc4 $11 Rxc4 13. Nge2 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 14. b3 Ba3+ 15. Kd2 (15. Kb1 $14) 15... Rc8 $17 16. Ke1 Qa5 17. Bd2 (17. Kf2 $17) 17... b4 $19 18. Nb1 Bb5 $36 {[%mdl 2048] Keeping White busy. A strong pair of Bishops.} 19. c4 $2 (19. Qe3) 19... bxc3 $1 {Black is clearly winning.} ({Weaker is} 19... dxc4 20. bxc4 Bxc4 21. Qxa3 Qxa3 22. Nxa3 bxa3 23. Kf2 $17) 20. Bxc3 {[#]} Rxc3 {[%mdl 512]} 21. Qd2 {[#]} Bxe2 22. Kxe2 Qa6+ 23. Kf2 Rc8 24. b4 Qa4 {Weighted Error Value: White=0.40/Black=0.05 (flawless)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.12"]
[White "Czerw, Dawid"]
[Black "Winter, Ondrej"]
[Result "1-0"]
[ECO "D26"]
[WhiteElo "2396"]
[BlackElo "2153"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,85,30,-4,-2,0,0,-8,-12,-14,0,-21,0,-13,0,2,8,0,5,0,18,17,73,67,69,41,59,10,8,-22,72,65,62,0,0,0,0,0,0,0,168,147,153,164,189,195,189,191,429,436,431,410,321,240,477,457,475,459,474,415,630,536,491,487,995,991,1506,1394,1340,1205,1364,1278,958,806]} 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 a6 6. O-O b5 7. Be2 Bb7 8. Nc3 Nbd7 {D26: Queen's Gambit Accepted: 4 e3 e6 5 Bxc5 c5 sidelines.} 9. b3 $1 {9.b3 scores better than 9.a3.} c5 10. Bb2 Be7 {The position is equal.} 11. Rc1 O-O 12. a4 b4 13. Nb1 Ne4 14. Nbd2 Nxd2 15. Nxd2 {[#]} cxd4 $146 ({Predecessor:} 15... Bf6 16. Bf3 Bxf3 17. Nxf3 Qe7 18. e4 Rfd8 19. Qe2 cxd4 20. Nxd4 Bxd4 21. Bxd4 e5 {½-½ (29) Hernandez,C (2373)-Plazuelo Pascual,J (2462) Barcelona 2021}) 16. Bxd4 Bf6 17. Nc4 Bxd4 (17... a5 $11) 18. Qxd4 $16 Qg5 {[%csl Gb7][%cal Rg5g2]} 19. f3 Rfd8 20. e4 (20. h4 $14 Qh6 21. Rfd1) 20... Nc5 $11 21. Qb2 Nd3 (21... a5 $11 {keeps the balance.}) 22. Bxd3 $16 Rxd3 23. Rcd1 (23. Qf2 $14) 23... Rad8 $11 24. Rxd3 Rxd3 25. Qf2 Qd8 26. Qc5 Qd4+ $2 {White now steadily converts the win.} (26... h6 $11 {and Black stays safe.}) 27. Qxd4 $18 Rxd4 {[%mdl 4096] Endgame KRB-KRN} 28. Rc1 {And now Na5 would win.} Bc6 {[#]} 29. Kf2 $1 f6 30. Ke3 e5 {[#]} (30... Rd8 31. Nd2 Be8) 31. Nxe5 $1 {[%mdl 512]} fxe5 32. Rxc6 {KR-KR} Rd1 33. Rc4 Rb1 $2 (33... a5 {was called for.} 34. Rc5 Rb1 35. Rxe5 (35. Rxa5 Rxb3+ 36. Kd2 Ra3 $18) 35... Rxb3+ 36. Kf4 Rb2) 34. Rxb4 Rb2 35. Rb6 Rxg2 36. Rxa6 Rxh2 (36... Rb2 $142 37. Rb6 Rxh2) 37. b4 {[%cal Bb3b4,Bb4b5,Bb5b6][%mdl 32] White is clearly winning.} Rb2 38. b5 Kf7 (38... h5 $142 39. Ra8+ Kh7) 39. b6 h5 40. a5 h4 41. Ra8 {Black must now prevent Rh8.} h3 42. Rh8 {Threatens to win with a6.} h2 {[#]} 43. Rxh2 $3 {[%mdl 512] Weighted Error Value: White=0.18 (very precise) /Black=0.50} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.13"]
[White "Hrabusa, Matej"]
[Black "Ronce, Nathan"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2369"]
[BlackElo "2171"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,71,0,-8,0,0,26,19,33,0,21,0,0,0,20,24,26,22,77,87,127,127,193,171,189,197,190,196,181,186,194,186,238,231,236,169,153,165,152,135,378,384,472,142,369,343,4910,4790,29978,29979,29975,12237,6087,6087,6083,2085,2019,2019,2002,1914]} 1. d4 Nf6 2. Nf3 d5 3. Bf4 e6 4. e3 Bd6 5. c3 c5 6. Nbd2 Qc7 7. Ne5 Nc6 8. Ndf3 O-O {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} 9. Bd3 Ne4 10. O-O {The modern move.} b6 {[#] The position is equal.} 11. c4 $146 ({Predecessor:} 11. Nxc6 Qxc6 12. Bxd6 Qxd6 13. Ne5 Bb7 14. f3 Nf6 15. a4 a6 16. Qb1 g6 17. b4 cxd4 18. cxd4 {0-1 (54) Romero Pallares,D (2203)-Quintin Navarro,A (2398) Zaragoza 2021}) 11... Bb7 12. cxd5 (12. Rc1 {is more complex.} Rad8 13. cxd5 exd5 14. Nxc6 Qxc6 15. Bxd6 Qxd6 16. Qa4) 12... exd5 13. Rc1 {[%cal Od4c5]} Rad8 14. Nxc6 Bxc6 15. Bxd6 Rxd6 (15... Qxd6 $11 16. Qc2 Rfe8) 16. Ne5 $16 {[%cal Ob2b4]} Bb7 17. b4 $1 f6 {[#]} (17... c4 $16 {was called for.}) 18. bxc5 $1 bxc5 {[#]} (18... Rdd8 19. c6) 19. dxc5 $1 Nxc5 {[#]} 20. Qh5 {[%csl Gd3][%cal Rh5h7]} f5 21. Bxf5 {[%csl Gf5][%cal Rh5h7]} Rh6 22. Qg5 Kh8 (22... Qb6 {was worth a try.} 23. Bb1 Qd6) 23. f4 $40 {[%cal Oe5d7][%mdl 128] aiming for Nd7! White wants a kill.} Qd6 {Prevents Nd7.} 24. Ng4 {Prevents Rhf6.} Ne6 25. Bxe6 {White is more active.} Rxe6 26. f5 Re4 (26... Re7 $16) 27. f6 {[%csl Gf6][%cal Rg5g7]} g6 28. f7 $2 ({Not} 28. Qh6 Rf7 $18) (28. h4 $18) 28... Re6 $2 {This move loses the game for Black.} (28... Qe7 $16 {might work better.} 29. Qh6 Rxg4) 29. Qh6 {[%cal Og4f6] Hoping for Nf6!} d4 $2 {[#]} (29... g5 30. Qxg5 h6) 30. Nf6 $1 {[%csl Gf6][%cal Rh6h7,Bg4f6,Bf6h7,Bh7g5][%mdl 544]} Rxf7 {[#]} (30... Rxf6 31. Rxf6) 31. Nxh7 $1 {[%mdl 512]} Kg8 32. Rxf7 Kxf7 {White is clearly winning.} 33. Ng5+ Ke8 34. Qh8+ (34. Nxe6 $142 Qxe6 35. Rc7 Qxe3+ 36. Qxe3+ dxe3 37. Rxb7) 34... Kd7 35. Nxe6 Qxe6 36. Qxd4+ {Weighted Error Value: White=0.24 (precise) /Black=0.68} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.14"]
[White "Sorm, Daniel"]
[Black "Goossens, Hanne"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2348"]
[BlackElo "2133"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,57,3,6,-23,-10,-36,-24,0,-26,-28,-16,-35,-41,-47,-41,-32,0,0,0,0,0,-7,1,-16,-7,0,483,467,1104,1161,1150,1132,935,912,2100,2031,1672,1617,29992,29993,29993,29993,29996,29995]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Bb5+ Nc6 {[%cal Rc5d4]} 9. Rb1 {D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3.} O-O {[%cal Rc5d4]} 10. d5 Bxc3+ 11. Bd2 {Black has an edge.} Bxd2+ 12. Qxd2 Na5 13. h4 {[#] Threatens to win with h5.} f6 $1 14. h5 {hxg6 would kill now.} g5 {[%cal Bg6g5,Bg5g4][%mdl 32]} 15. h6 {[%cal Of3g5] [#]} Kh8 $146 ({Predecessor:} 15... Rf7 16. Nxg5 fxg5 17. Rh5 Qb6 18. Rxg5+ Kh8 19. Bd3 Qf6 20. Rf5 Bxf5 {0-1 (20) Skrondal,I (2190)-Fluegel,S (1600) Oslo 2009}) 16. Qc3 $36 {[%csl LRc5,LRg5][%mdl 2048] White fights for an advantage.} g4 17. Nh4 b6 18. O-O {[%cal Bh1f1,Bf1f3,Bf3d3,Bd3e3,Be3e5,Be5f5][%mdl 32]} Qd6 19. f4 gxf3 20. Rxf3 {[%cal Oe4e5] e5! is the strong threat.} Rg8 $2 {[%mdl 8192]} (20... Bg4 $1 $11 {and Black stays safe.} 21. Re3 e5) 21. Rbf1 $18 {[%cal Rf3f6]} Rf8 (21... Qe5 $142 22. Qxe5 fxe5) 22. e5 {[%cal Be4e5,Be5f6][%mdl 32]} Qxd5 23. exf6 e5 24. Rd3 Qe6 25. Re3 Qd6 26. Rxe5 {[#] Intending Re4 and mate.} Bb7 {Inhibits Re4.} 27. Nf5 {White mates.} Qxf6 28. Ne7 Qxh6 29. Ref5+ {Weighted Error Value: White=0.05 (flawless) /Black=0.65} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.15"]
[White "Janous, Marek"]
[Black "Mikes, Jan"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2078"]
[BlackElo "2329"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,64,1,27,24,44,43,48,25,23,17,19,8,56,0,12,0,0,-13,-31,-57,-63,-57,-53,-71,-52,-87,-87,-66,-77,-61,-58,-103,-96,-170,-143,-127,-123,-241,-224,-227,-211,-373,-381,-367,-344,-485,-478,-433,-379,-514,-497,-940,-965,-708,-670]} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Nf3 Be6 7. c5 {B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack.} a6 8. h3 g6 9. Be2 {White is slightly better.} Bg7 10. O-O O-O 11. Bf4 h6 {[#]} (11... Ne4 $11 {deserves consideration.}) 12. a3 $146 (12. Qb3 $14) ({Predecessor:} 12. b4 g5 13. Bh2 Ne4 14. Na4 Nxb4 15. Rb1 Qa5 16. a3 Nc6 17. Rxb7 Nc3 18. Nxc3 Qxc3 {½-½ (48) Zojer,S (2003)-Ganaus,H (2315) Austria 2011}) 12... g5 13. Bh2 Ne4 14. Na4 f5 {[%cal Bf7f5,Bf5f4][%mdl 32]} 15. Ne5 f4 $1 {[%cal Oc6d4]} 16. Nxc6 bxc6 17. Nb6 Ra7 {Black is more active.} 18. Qa4 {[%csl LRa6,LRc6] [#]} Qe8 $1 19. Rfe1 Bf5 20. Rad1 Qg6 21. Qb3 (21. Bg4 $1 $15 Bxg4 22. hxg4) 21... h5 $17 22. Bf1 {[#]} (22. f3 $17 {is a better defense.} Ng3 23. Bxg3 fxg3 24. Qc3) 22... Nxf2 $1 {[%mdl 512]} 23. Kxf2 Bc2 24. Qc3 (24. Bd3 $17 Bxd4+ 25. Kf1 Bxb3 26. Bxg6 Bxd1 27. Rxd1 Bxb2 28. Bxh5) 24... Bxd1 $19 25. Rxd1 g4 26. Be2 $2 (26. Kg1 g3 27. Qf3) 26... e5 ({Not} 26... g3+ $2 27. Kg1 $19) 27. dxe5 Re7 {Chess con chili.} 28. Qd3 (28. Kg1 $142 Bxe5 29. Qd3 Qxd3 30. Rxd3 Bxb2 31. Kf1) 28... g3+ 29. Kg1 gxh2+ 30. Kxh2 Qg3+ {Black is clearly winning.} 31. Qxg3 (31. Kg1 $142 Bxe5 32. Qf3) 31... fxg3+ 32. Kg1 Bxe5 {Weighted Error Value: White=0.50/Black=0.08 (flawless)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.16"]
[White "Kulhanek, Tomas"]
[Black "Pham, Khoi"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2323"]
[BlackElo "2114"]
[Annotator "TA"]
[PlyCount "39"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,39,3,11,-2,2,8,8,-23,-20,-16,0,0,27,6,5,0,0,-1,-13,-2,0,-7,0,-2,0,0]} 1. e4 c5 2. Nf3 Nc6 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. cxd4 d6 7. Bc4 Nb6 8. Bb5 Bd7 9. exd6 {B22: Sicilian: 2 c3.} e6 10. Bg5 f6 {10...Qb8 is not played anymore.} 11. Be3 Bxd6 12. Nc3 {[#]} O-O $146 ({Predecessor:} 12... Nb4 13. Be2 N4d5 14. O-O O-O 15. Bd3 Rc8 16. Rc1 Be8 17. Nxd5 Nxd5 18. Rxc8 Qxc8 {0-1 (26) Potkin,V (2597)-Nepomniachtchi,I (2763) Moscow 2018}) 13. d5 {[#] Strongly threatening Bxb6.} Nb4 14. Bxd7 (14. Bxb6 $5 axb6 15. dxe6 Bxe6 16. O-O $11) 14... Qxd7 {The position is equal.} 15. dxe6 Qxe6 {[%cal Oe6c4] With the idea ...Qc4!} 16. O-O Nc4 {[%csl LRb2,LRe3]} 17. Qb3 {[#] Threatens to win with Nb5.} Rfe8 18. Bd4 Nc6 19. Nb5 a6 20. Nxd6 {An interesting draw.  Weighted Error Value: White=0.07 (flawless) /Black=0.06 (flawless)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.17"]
[White "Adamko, Peter"]
[Black "Mannion, Stephen R"]
[Result "0-1"]
[ECO "C90"]
[WhiteElo "2113"]
[BlackElo "2267"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,84,1,41,9,17,25,18,-28,-29,-19,-20,-27,-8,-29,-25,-18,-31,-32,-27,-24,-23,-87,8,12,27,17,18,18,21,0,0,-75,-62,-220,-210,-252,-167,-195,-174,-310,-294,-315,-309,-407,-388,-440,-443,-385,-349,-519,-510,-498,-492,-751,-726,-718,-693,-29988,-29989]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. d3 Na5 10. Bc2 c5 11. Nbd2 Re8 12. Nf1 h6 13. Ng3 Bf8 14. h3 {14.d4 deserves study.} g6 15. d4 {C90: Closed Ruy Lopez with 7...d6: Early deviations.} exd4 16. cxd4 Bb7 17. Bd2 (17. d5 $142) 17... cxd4 $11 18. Nxd4 {[#]} Nc4 $146 ({Predecessor:} 18... Qb6 19. Nf3 Nc4 20. Bc3 Ne5 21. a3 Rac8 22. Rc1 Bg7 23. Nxe5 dxe5 24. Bb3 Bf8 {1-0 (42) Newrkla,K (1979)-Novkovic,J (2144) Tweng 2007}) 19. Bc3 Rc8 20. a4 b4 21. Bxb4 Nxb2 22. Qb1 Nc4 23. Qb3 Qb6 24. a5 Qa7 (24... Qxd4 $17 25. Bc3 Nxa5 $1 26. Bxd4 Nxb3 27. Bxb3 Nxe4 28. Nxe4 Rxe4 29. Rxe4 Bxe4 30. Rxa6 Rb8) 25. Nf3 Nd7 26. Rad1 Nde5 27. Nxe5 Rxe5 28. Bd3 Nxa5 29. Bxa5 (29. Qa4 $11 {keeps the balance.} Nc6 30. Bd2) 29... Rxa5 $17 30. e5 $2 {[#] Now White is beyond hope.} ({White should try} 30. Nf1 $1 $15) 30... Bd5 $1 $19 31. Qb1 Rb8 $40 {[%mdl 128] White is in trouble.} ({Not} 31... Ra2 32. Be2 Rb8 33. Qd3 $17) 32. Qc1 dxe5 ({Inferior is} 32... Ra2 33. Be2 Bb3 34. exd6) 33. Be4 (33. Rxe5 {keeps fighting.} Bd6 34. Qe3) 33... Be6 34. Re2 Rc8 35. Qb1 Rb5 36. Rb2 Rxb2 37. Qxb2 Bc5 38. Qxe5 (38. h4 $142) 38... Bxf2+ {This bishop pair is nice.} 39. Kh2 Qe3 {White must now prevent ...Bxg3+.} 40. Nf1 (40. Nh1 $142 Bh4 41. Qd4) 40... Qe2 41. Rb1 Bf5 42. Rb8 Qxf1 {Weighted Error Value: White=0.67/Black=0.12 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.18"]
[White "Ondrus, Martin"]
[Black "Zysko, Jan"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2267"]
[BlackElo "2092"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,71,32,39,30,37,40,30,51,35,40,29,27,35,0,0,22,24,3,20,0,50,62,55,48,100,95,95,76,197,175,176,142,452,384,410,399,611,604,570,272,287,279,254,241,494,451,396,324,386,393,438,147,140,123,141,118,142,133,29979,29978,29982,5390]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 {[%cal Bb8c6,Bc6e5,Be5g4][%mdl 32]} 5. Nc3 Qc7 6. Be3 a6 7. Qf3 {B48: Sicilian: Taimanov: 5 Nc3 Qc7 6 Be3 a6 without Be2.} Nf6 {[%cal Of8a3]} 8. O-O-O Ne5 9. Qg3 {White has an edge.} b5 10. f4 Neg4 11. Bg1 h5 {The main line 11...h5 scores better than 11...b4.} 12. h3 b4 13. Nd5 exd5 14. hxg4 {[#]} Nxe4 $146 ({Predecessor:} 14... dxe4 15. g5 Nd5 16. Qb3 Nb6 17. g4 d5 18. gxh5 Bd6 19. Kb1 Bd7 20. Rh4 Bxf4 {1-0 (44) Nijboer,F (2488)-De Ruiter,D (2309) Hilversum 2019}) 15. Qe3 Bd6 (15... h4 $11) 16. g3 $14 (16. Rxh5 $2 Rxh5 17. g3 (17. gxh5 $2 Bxf4 18. Be2 a5 $19) 17... Rh7 $19) 16... Kf8 {[%cal Oe4g3] aiming for ...Nxg3!} 17. Kb1 $1 (17. Rxh5 Rxh5 18. gxh5 Nxg3 $1 $11) 17... Bb7 (17... Bc5 $14) 18. gxh5 (18. Rxh5 $6 Rxh5 19. gxh5 Bc5 $11) 18... Re8 {[%cal Oe4c3] White must now prevent ...Nc3+!} 19. Qf3 {Inhibits Nc3+.} Bc6 (19... Bc5 $16) 20. Nf5 $18 (20. Bxa6 Qa5 21. h6 (21. Nxc6 $2 dxc6 22. h6 Rxh6 $19) 21... Rxh6 22. Rxh6 gxh6 $11) 20... Ba4 21. Bd3 Nc3+ $2 {[%mdl 8192]} (21... Bc5 $16 {is more resistant.} 22. Qg4 Rh7) 22. bxc3 bxc3 23. Nd4 (23. Qxd5 Qb8+ 24. Bb5 Ba3 $18) 23... Qb7+ (23... Bc5 $142 24. Nb3 (24. Bxa6 $2 Bxd4 25. Qxd5 Qb6+ 26. Bb5 Bxg1 $19) 24... Bxg1) 24. Nb3 Qb4 {( -> ...Qa3)} 25. Be3 (25. Bf5 $142) 25... d4 26. Bc1 Bc6 27. Qf2 Bc5 $2 (27... Bxh1 28. Rxh1 Qb7) 28. Rhe1 Rb8 29. Qe2 a5 30. f5 a4 {[#] And now ...Bd5 would win.} 31. f6 $1 gxf6 $16 {[#] Threatens to win with ...Bd5.} 32. h6 $1 {[%cal Bh5h6,Bh6h7][%mdl 32]} axb3 (32... Bd5 33. Qg4) 33. cxb3 $40 {[%mdl 128] White is out for blood. The board is on fire.} ({Don't play} 33. axb3 $6 Qa4 $11) 33... Bd5 {[%cal Od5b3] [#] ...Bxb3! is the strong threat.} 34. Qg4 $1 {[%csl Gh6][%cal Rg4g7][%mdl 1024] White has strong compensation.} Rg8 {[%mdl 8192] [#] To avoid Qg7+} (34... Be6 $16 35. Qg7+ Ke7) 35. h7 $1 {[%csl Gg4][%cal Rh7g8][%mdl 512]} c2+ (35... Be6 36. hxg8=Q+) 36. Bxc2 {Weighted Error Value: White=0.24 (precise) /Black=0.55} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.19"]
[White "Finn, Peter"]
[Black "Dev, Shah"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2020"]
[BlackElo "2243"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,74,15,8,13,0,0,0,12,0,35,-26,-15,-28,-21,-20,-20,-17,-20,-22,-20,-28,0,-11,127,58,50,0,76,-89,-12,-10,-20,-13,-7,-91,-68,-93,-110,-131,-137,-163,-76,-73,-48,-45,-57,-68,-17,-85,-55,-156,-154,-221,-215,-319,-297,-374,-385,-343,-250,-322,-158,-572,-556]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O O-O 7. Bb3 a5 $1 {[%mdl 4] is now more promising than 7...a6. C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 8. Nbd2 Be6 9. a4 d5 {The position is equal.} 10. Re1 Re8 {[#]} 11. Bc2 $146 (11. Ng5 $14) ({Predecessor:} 11. Qc2 h6 12. h3 Qd7 13. exd5 Bxd5 14. Ne4 Nxe4 15. dxe4 Be6 16. Rd1 Qe7 17. Bxe6 Qxe6 {0-1 (34) Mogilchenko,T (1959)-Kotenko,P (2316) Rostov on Don 2021}) 11... Ng4 12. Re2 Bxf2+ (12... h6 {with more complications.} 13. exd5 Bxd5 14. Ne4 Bb6 15. h3 Nf6) 13. Rxf2 Ne3 14. Qe2 Nxc2 15. Rb1 d4 16. Nf1 $1 Bb3 (16... Ne3 $5 17. Bxe3 dxe3 18. Nxe3 f6 $11) 17. Qd1 f5 (17... Bxa4 $11 18. Rxc2 (18. b3 Ne3 $17) 18... Bxc2 19. Qxc2 f6) 18. Bg5 (18. Rxc2 fxe4 19. Bg5 (19. dxe4 $2 d3 $19) 19... Qd6 $17) (18. exf5 Na1 19. Qe2 e4 $1) (18. N3d2 $16 Ba2 19. Qxc2 Bxb1 20. Qxb1 (20. Nxb1 fxe4 21. dxe4 Kh8 $14)) 18... Qd7 $14 19. N3d2 (19. Rxc2 fxe4 20. N3d2 (20. dxe4 $2 d3 $19) 20... exd3 $1 21. Nxb3 dxc2 22. Qxc2 Qg4 $17) (19. exf5 $14 dxc3 20. bxc3 (20. Rxc2 $2 Nb4 $19) 20... Bxa4 21. Ng3 (21. Rxc2 e4 $17)) 19... Bxa4 (19... Ba2 $1 $11 {remains equal.}) 20. b3 $2 {[#]} (20. exf5 $16 {Strongly threatening Ne4.} h6 21. Bh4) 20... Ne3 (20... dxc3 $1 $17 21. Qxc2 Bb5 22. Qxc3 f4) 21. Bxe3 $11 dxe3 22. Nxe3 f4 (22... Qxd3 $2 23. Nxf5 Bb5 24. c4 $18) 23. Nf5 (23. Nd5 $1 $11 {keeps the balance.} Bb5 24. c4) 23... Bb5 $17 24. Qg4 {aiming for Nh6+.} Kh8 25. c4 Ba6 26. Qg5 Nd4 (26... Re6 $19 {White must now prevent ...Rg6.} 27. Ra1 b6) 27. Nf3 Nxf5 28. exf5 Qxd3 29. Re1 {f6 is the strong threat.} Rf8 {To avoid f6} (29... Qxb3 $2 30. f6 gxf6 31. Qxf6+ Kg8 32. Qg5+ (32. Nxe5 Bxc4 33. Qg5+ Kh8 $18) (32. Rxe5 Qb1+ 33. Ne1 Rxe5 $17) 32... Kh8 33. Nxe5 (33. Qf6+ Kg8 $18) 33... Qxc4 34. Qf6+ Kg8 35. Rxf4 $18) (29... Kg8 $1 $15) 30. Rxe5 (30. Nxe5 $11 Qxf5 31. Qe7) 30... Qxb3 31. Re7 {[#]} (31. h3 $1 $15 Qb6 32. Qxf4) 31... Qb1+ $1 ({Don't take} 31... Rg8 32. Ne5 Qb1+ 33. Rf1 Qb6+ 34. Kh1 $18) 32. Rf1 (32. Ne1 $17 {might work better.} Qa1 33. Rxf4) 32... Qb6+ $19 33. Kh1 (33. Rf2 $142 Qf6 34. Qxf6 Rxf6 35. Rxc7) 33... Qf6 34. Rxc7 Qxg5 35. Nxg5 Rxf5 36. Ne6 Rg8 (36... Re5 $19 37. Nxf4 Re4) 37. Rxf4 $2 (37. Rc1 $17) 37... Re5 {Weighted Error Value: White=0.61/Black=0.33} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.20"]
[White "Bomans, Arno"]
[Black "Gajdos, Daniel"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2246"]
[BlackElo "2076"]
[Annotator "TA"]
[PlyCount "45"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,44,7,9,21,10,21,51,35,65,47,55,68,89,70,86,56,350,308,459,459,1263,1229,2991,2905,2915,2837,2653,1892,2505,1840,29996,29997,29997,29998,29998,29999,29999]} 1. d4 Nf6 2. Bg5 d5 3. Bxf6 gxf6 4. e3 c5 5. dxc5 Qa5+ 6. Nc3 {D00: 1 d4 d5: Unusual lines.} e6 7. Qd4 Nc6 8. Bb5 {White is slightly better.} Bd7 9. Qxf6 Rg8 10. Nge2 {[#]} Be7 $146 ({Predecessor:} 10... Bxc5 11. O-O Be7 12. Qf3 O-O-O 13. Nd4 Ne5 14. Bxd7+ Rxd7 15. Qh5 Bf6 16. a3 Qd8 {0-1 (51) Etchegaray,P (2329)-Alonso Alonso,I (2106) Bergara 2019}) 11. Qf4 Bxc5 12. Qh4 e5 $2 {[%mdl 8192]} (12... Rxg2 $14 13. O-O-O Rg8) 13. O-O-O $18 ({Weaker is} 13. Qxh7 O-O-O $14) 13... Rg4 (13... Be6 $142 14. Rxd5 (14. Qxh7 O-O-O $11) 14... Bxd5) 14. Qf6 Rb4 {[#]} (14... Rg6 $142 15. Qh8+ Bf8 16. Rxd5 Qb4 17. Bxc6 bxc6) 15. Nxd5 $1 {Strongly threatening Bxc6.} Rxb5 (15... Bf8 16. Nec3) 16. Qh8+ {[%mdl 64] Skewer, Double Attack} Bf8 17. Nf6+ {[%mdl 64] Discovered Attack, Double Attack. Pair of Knights!} Ke7 18. Rxd7+ Ke6 {[#]} 19. Qxh7 $1 Be7 (19... Nd8 20. g4) 20. Qh3+ {White mates.} Kxf6 21. Qh6+ Kf5 22. Ng3+ Kg4 23. h3# {Black got outplayed after the opening.  Weighted Error Value: White=0.08 (flawless) /Black=1.37} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.21"]
[White "Cholleti Sahajasri"]
[Black "Llopis de Aysa, Manuel"]
[Result "1-0"]
[ECO "A41"]
[WhiteElo "2235"]
[BlackElo "2035"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,81,47,36,27,45,35,43,33,28,24,43,2,50,64,66,52,54,69,79,71,76,77,72,49,47,48,66,67,56,55,64,12,72,62,91,106,102,66,78,55,91,101,111,77,97,88,87,84,82,62,68,40,68,61,92,39,39,16,29,0,0,0,0,-7,-5,-83,0,-26,291,289,318,302,444,429]} 1. d4 d6 2. Nf3 g6 3. c4 Bg7 4. Nc3 e5 5. e4 Nc6 {[%cal Re5d4]} 6. dxe5 {A42: Modern Defence: Averbakh Variation.} Nxe5 {6...dxe5 is the modern continuation.} 7. Be2 Nxf3+ 8. Bxf3 {White is slightly better.} Ne7 9. Be3 O-O 10. O-O (10. Qd2 $14) 10... Nc6 (10... Bxc3 $11 11. bxc3 Nc6) 11. Qd2 $14 Ne5 12. Be2 Be6 13. b3 f5 14. exf5 Bxf5 15. Rad1 {[#]} Kh8 $146 ({Predecessor:} 15... Rf7 16. Bg5 Qf8 17. Nd5 Re8 18. h3 Be6 19. Rde1 {½-½ (19) Bewersdorff,O (2335)-Buchal,S (2305) Germany 1988}) 16. Bh6 Bxh6 17. Qxh6 {[%cal Oc4c5]} Qf6 18. Nd5 {[%csl LRc7,LRf6]} Qf7 19. Qd2 Qg7 20. Rfe1 ({White should play} 20. f4 $14 Nc6 21. h3) 20... Rf7 (20... g5 $11 {remains equal.}) 21. f4 $16 Nc6 22. Bf3 Raf8 23. Re2 h6 24. b4 {[%cal Bb3b4,Bb4b5][%mdl 32]} g5 25. b5 {[#] Threatens to win with Bh5.} Nd8 26. Bh5 (26. Rde1 {looks sharper.} c6 27. fxg5 hxg5 28. Ne7 g4 29. Nxf5 Rxf5 30. Be4) 26... Bg6 27. Bxg6 Qxg6 28. fxg5 {White is much more active.} Qxg5 29. Qxg5 hxg5 30. Rde1 c6 31. Ne7 Kh7 {To avoid Ng6} 32. Re3 (32. Nc8 $16) 32... Rf4 $14 33. Rh3+ Kg7 {[%cal Od8e6]} 34. Rh5 Nf7 35. bxc6 bxc6 36. c5 dxc5 37. h3 (37. Rh3 $11) 37... Rf6 (37... c4 $17 {Strongly threatening ...Rd8.} 38. g3 Rf3) 38. g4 {[%cal Bg2g4,Bg4g5][%mdl 32]} (38. h4 $5 {[%cal Rh4g5]}) 38... Nh6 $2 {[%mdl 8192]} (38... Rb8 $11) 39. Rxg5+ $18 Kh7 40. Rh5 {[#] Hoping for g5.} ({Don't do} 40. Rxc5 Rf3 41. Rh5 (41. Nxc6 Rxh3 42. Re7+ Rf7 $16) 41... Kg7 42. Nxc6 Rg3+ 43. Kh2 Rc3 $18) 40... Rf3 (40... c4 $142 41. g5 Rd6) 41. g5 {Weighted Error Value: White=0.18 (very precise) /Black=0.35} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.22"]
[White "Bouska, Jiri"]
[Black "Hrbek, Stepan"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2071"]
[BlackElo "2179"]
[Annotator "NA RC"]
[PlyCount "78"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:01]} c5 {[%emt 0:00:06]} 2. Nf3 {[%emt 0:00:09]} Nc6 {[%emt 0:00:05]} 3. d4 {[%emt 0:00:05]} cxd4 {[%emt 0:00:05]} 4. Nxd4 {[%emt 0:00:08]} Nf6 {[%emt 0:00:05]} 5. Nc3 {[%emt 0:00:08]} e5 {[%emt 0:00:06]} 6. Ndb5 {[%emt 0:00:21]} d6 {[%emt 0:00:11]} 7. Bg5 {[%emt 0:00:23]} a6 {[%emt 0:00:06]} 8. Na3 {[%emt 0:00:08]} b5 {[%emt 0:00:06]} 9. Nd5 {[%emt 0:00:07]} Be7 {[%emt 0:00:06]} 10. Bxf6 {[%emt 0:00:53]} Bxf6 {[%emt 0:00:10]} 11. g3 {[%emt 0:01:36]} h5 {[%emt 0:09:57]} 12. Bg2 {[%emt 0:02:57]} Bg4 {[%emt 0:05:05]} 13. Qd3 {[%emt 0:03:34]} h4 {[%emt 0:01:24]} 14. O-O {[%emt 0:03:17]} Ne7 {[%emt 0:06:21]} 15. Nxf6+ {[%emt 0:03:59]} gxf6 {[%emt 0:00:07]} 16. c4 {[%emt 0:01:55]} b4 {[%emt 0:02:05]} 17. Nc2 {[%emt 0:00:32]} Qb6 {[%emt 0:01:57]} 18. Ne3 {[%emt 0:04:14]} Be6 {[%emt 0:00:43]} 19. Rfd1 {[%emt 0:00:43]} Rd8 {[%emt 0:00:28]} 20. Rac1 {[%emt 0:01:16]} hxg3 {[%emt 0:01:20]} 21. hxg3 {[%emt 0:00:22]} Nc6 {[%emt 0:02:59]} 22. Kf1 {[%emt 0:29:43]} Kf8 {[%emt 0:07:52]} 23. f4 {[%emt 0:06:00]} Kg7 {[%emt 0:00:07]} 24. f5 {[%emt 0:00:25]} Bc8 {[%emt 0:00:16]} 25. Qe2 {[%emt 0:04:59]} Rh6 {[%emt 0:01:59]} 26. Kf2 {[%emt 0:05:07]} Nd4 {[%emt 0:00:39]} 27. Qg4+ {[%emt 0:00:36]} Rg6 {[%emt 0:00:08]} 28. Qh4 {[%emt 0:01:57]} Rh6 {[%emt 0:06:07]} 29. Qg4+ {[%emt 0:00:36]} Rg6 {[%emt 0:00:07]} 30. Qh4 {[%emt 0:00:14]} Rh8 {[%emt 0:00:05]} 31. Qxh8+ {[%emt 0:01:11]} Kxh8 {[%emt 0:00:05]} 32. fxg6 {[%emt 0:00:07]} fxg6 {[%emt 0:00:10]} 33. Rh1+ {[%emt 0:03:05]} Kg7 {[%emt 0:00:11]} 34. Rh2 {[%emt 0:01:28]} Be6 {[%emt 0:00:38]} 35. g4 {[%emt 0:07:37]} b3 {[%emt 0:03:51]} 36. axb3 {[%emt 0:05:04]} Qxb3 {[%emt 0:00:13]} 37. Re1 {[%emt 0:00:29]} Qxb2+ {[%emt 0:00:42]} 38. Kg1 {[%emt 0:00:14]} Qd2 {[%emt 0:00:22]} 39. Kf1 {[%emt 0:00:47]} Nf3 {[%emt 0:00:11]} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.23"]
[White "Matras, Ondrej"]
[Black "Fizerova, Lucie"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "2223"]
[BlackElo "1736"]
[Annotator "TA"]
[PlyCount "159"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,159,13,10,-13,-11,-7,20,24,30,17,15,0,1,-26,-6,-16,13,17,13,0,-3,-5,0,0,24,17,72,65,189,43,43,35,35,37,70,71,77,43,43,37,42,20,30,2,1,0,28,25,43,39,91,45,79,72,103,103,104,47,39,41,70,69,113,131,161,97,96,91,132,49,87,49,64,49,64,49,91,83,72,64,181,191,191,145,316,191,331,318,385,131,413,87,154,154,228,237,318,302,436,287,314,286,325,320,293,289,250,125,335,354,304,116,116,116,139,139,139,139,139,179,371,310,448,139,449,449,449,448,935,935,877,877,840,737,918,754,2002,1983,1891,1847,29981,1679,29982,29983,29983,29984,29985,29986,29988,29989,29990,29991]} 1. d4 f5 2. Nc3 d5 3. Bg5 Nf6 4. e3 e6 5. Nf3 Be7 6. Ne5 {A80: Dutch Defence: Unusual White second moves.} O-O 7. Be2 Ne4 8. Bxe7 {The position is equal.} Qxe7 {[#]} 9. O-O $146 ({Predecessor:} 9. Nxe4 fxe4 10. O-O Nd7 11. f4 Nxe5 12. fxe5 Bd7 13. Qd2 Qg5 14. Rxf8+ Rxf8 15. Rf1 Rxf1+ 16. Bxf1 Be8 17. Qf2 c5 18. c3 c4 {½-½ (18) Kuehler,A (1876)-Fehmer,C (2060) Germany 2018}) 9... Nd7 10. Nxd7 Bxd7 11. Qe1 b6 12. f4 c5 {[%cal Bc7c5,Bc5c4][%mdl 32]} 13. Nxe4 fxe4 14. Rd1 c4 15. b3 b5 16. Qa5 Rf6 17. Ra1 Rh6 (17... Rf7 $11 {remains equal.}) 18. g3 $16 Rg6 (18... Qd8 $14 19. Qxd8+ Rxd8) 19. bxc4 (19. a4 $18) 19... bxc4 $14 20. Rab1 Bc6 21. c3 Qh4 {[%cal Og6g3]} 22. Kg2 {And now Qa6 would win.} Qe7 23. Rb2 (23. Qa6 $5 {[%cal Ra6c6]} Qd7 24. h4 $11) 23... Rf6 24. Rfb1 Rff8 25. Bg4 g6 26. Qb4 Kf7 27. Qa5 Qd6 28. Qa6 {[%cal Ob2b7]} Rfd8 29. Bd1 Kf8 (29... h5 $14) 30. h4 (30. Ba4 $16 Be8 31. Qxd6+ Rxd6 32. Rb8) 30... Qc7 31. h5 Qc8 32. Qa3+ Kf7 33. Bg4 (33. g4 $16) 33... Qc7 34. Rh1 Rh8 35. Qc5 Qd7 (35... Kf6 $14) 36. Bd1 $16 {White is much more active.} Rac8 37. Qa3 (37. g4 $1 $18) 37... Qe7 38. Qa6 Qc7 (38... Qd7 $142) 39. Bg4 ({White should try} 39. Ba4 $16 Qd7 40. Rhb1 (40. hxg6+ Kxg6 41. Kg1 Kg7 $14)) 39... Qd7 40. Rhb1 {[%cal Ob2b7]} Kf6 41. h6 Rc7 42. Be2 Kf7 (42... Rcc8 $14 {is more appropriate.}) 43. Qa5 Rhc8 44. g4 {[%cal Bg3g4,Bg4g5][%mdl 32]} Ke7 (44... g5 $14) 45. g5 $18 Kf7 46. Rb4 (46. Bd1 $18) 46... Ke7 $2 (46... Ba8 $16) 47. Kg3 Kf7 (47... Qd6 $142 48. Bd1 Rd7) 48. Bd1 Ke7 49. Qa3 $2 (49. Ba4 $18 Bxa4 50. Rxa4 (50. Qxa4 Qxa4 51. Rxa4 Ra8 $14)) 49... Kf7 $2 {[%mdl 8192]} (49... Qd6 $16) 50. Qb2 $2 (50. Ba4 $18 Bxa4 51. Rxa4 (51. Qxa4 Qxa4 52. Rxa4 Rd8 $14)) 50... Ke7 (50... Qe7 $142) 51. Bc2 $16 Kf7 (51... Rf8 $16 {was called for.} 52. Bd1 Kf7) 52. Qa3 $1 $18 Qe7 {[%cal Oa7a5]} 53. Qa5 Qd7 (53... Ba8 $142 54. Rb8 Qd8 55. Rxc8 Qxc8) 54. Qa6 Ke7 {[#]} 55. Ba4 $1 Bxa4 56. Rxa4 {Strongly threatening Rab4.} ({Not} 56. Qxa4 Qxa4 57. Rxa4 Rd8 $14) 56... Qd6 57. Qxd6+ Kxd6 {[%mdl 4096] Endgame [#] KRR-KRR} 58. Ra6+ (58. f5 $1 $18) 58... Kd7 $2 (58... Ke7 $16 {might work better.}) 59. Rb5 Ke7 60. Kf2 $2 (60. Rba5 $18) 60... Rd8 61. Ke2 Rd6 62. Rxd6 Kxd6 $16 {KR-KR} 63. Rb8 Kc6 64. Kd1 Rb7 $2 (64... Re7 {is a better defense.} 65. a4 Rf7) 65. Rg8 $18 Kd6 (65... Rb1+ $142 66. Kc2 Rb7) 66. Kc2 $2 (66. Rg7 $18 {is more deadly.} Kc6 67. a4) 66... Kc6 $2 {[%mdl 8192]} (66... Kd7 $16 {is more resistant.}) 67. Rg7 a6 68. Rg8 {aiming for Re8.} Kd6 (68... a5 $142 69. Re8 Kd6) 69. Ra8 Kc7 70. Rxa6 Rb6 71. Ra8 {Black must now prevent Rh8.} Kc6 72. Rg8 {Hoping for Rg7.} Rb7 73. Rg7 Kb6 74. Kb2 {Threatening mate with Rxb7+.} Ka6+ 75. Ka3 (75. Rxb7 $142 Kxb7 76. Ka3 Kc7 77. Kb4 Kc6 78. a4 Kd6 79. a5 Kc7 80. Kb5) 75... Ra7 76. Rxa7+ {White mates.} Kxa7 77. Kb4 Kb6 78. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} Ka6 79. a5 Kb7 80. Kb5 {Weighted Error Value: White=0.39/Black=0.40} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.08"]
[Round "3.24"]
[White "Roubal, Matyas"]
[Black "Babula, Vlastimil"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "1815"]
[BlackElo "2561"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,76,0,14,-39,-44,-52,-37,-54,-53,-89,-78,-85,-61,-116,-124,-121,-121,-143,-110,-166,-162,-196,-211,-263,-243,-265,-252,-253,-238,-247,-175,-198,-197,-229,-229,-222,-237,-237,-231,-235,-224,-272,-250,-244,-177,-385,-309,-322,-156,-156,-162,-197,-140,-266,-246,-240,-243,-269,-181,-335,-330,-453,-406,-437,-425,-417,-370,-407,-381]} 1. e4 {ChessBase} c5 2. Nf3 d6 3. Bb5+ Nd7 4. Ba4 Ngf6 5. O-O a6 {[#] White must now prevent ...b5.} 6. c3 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} ({White should play} 6. c4 $11) 6... Nxe4 $15 7. Re1 Nef6 8. d4 {Black is slightly better.} b5 {[#]} 9. Bb3 $146 ({Predecessor:} 9. Bc2 Bb7 10. Bf4 e6 11. a4 Be7 12. axb5 axb5 13. Na3 Qb6 14. Qe2 c4 15. b3 {0-1 (32) Fuglsang,F (2275)-Aagaard,J (2440) Copenhagen 1997 CBM 059 [ChessBase]}) 9... c4 (9... Bb7 {seems wilder.} 10. Qe2 h6 11. a4 c4 12. Bc2 e6) 10. Bc2 Bb7 11. Bf4 (11. b3 $15) 11... e6 $17 12. Nbd2 Be7 13. a4 O-O 14. axb5 (14. Ng5 $17) 14... axb5 $19 15. b3 Nd5 {[%csl LRc3,LRf4]} 16. Bg3 Nxc3 17. Bxh7+ Kxh7 18. Qc2+ Kg8 19. Qxc3 Rc8 20. bxc4 bxc4 21. Qb4 Bxf3 ({Wrong is} 21... Qb6 $2 22. Qa4 Bc6 23. Qc2) 22. Nxf3 Nf6 23. Qb1 Nd5 24. h4 c3 25. Qd3 Nb4 26. Qb1 d5 27. Ng5 $2 (27. Qb3 {was called for.}) 27... Bxg5 28. hxg5 Nc6 (28... Rc4 $19 {Hoping for ...c2.} 29. g6 c2) 29. Qd3 $17 Qxg5 30. Qxc3 Ne7 (30... Qg4 $19 31. Ra4 e5) 31. Qd3 (31. Qe3 $17 Qg6 32. Bd6) 31... Nf5 $19 32. Be5 Rc4 33. g3 Qd8 34. g4 $2 {[#]} (34. Kg2 {was necessary.}) 34... Qg5 $1 35. Kh2 Qxg4 36. Rg1 Qh4+ 37. Qh3 Qxh3+ 38. Kxh3 f6 {Weighted Error Value: White=0.39/Black=0.22 (precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.1"]
[White "Pijpers, Arthur"]
[Black "Fus, Jakub"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2485"]
[BlackElo "2384"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,83,23,29,22,37,31,8,17,29,11,9,12,14,12,6,22,57,41,74,64,78,85,79,20,17,14,27,18,77,64,110,108,91,108,101,72,104,98,110,100,186,187,240,230,222,229,239,245,244,243,257,219,225,186,417,400,462,439,616,574,627,590,683,646,669,633,633,622,598,518]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 c5 6. Be3 cxd4 7. Nxd4 Ne7 8. c4 Nbc6 9. Qa4 $1 {Black must now prevent Nc3. B12: Caro-Kann: Advance Variation.} dxc4 10. Nc3 a6 {...b5 is the strong threat.} 11. O-O-O {The position is equal.} ({Much worse is} 11. Qxc4 Nxd4 12. Bxd4 b5 $15) ({Much weaker is} 11. Bxc4 b5 12. Ncxb5 axb5 13. Qxb5 Be4 $17) 11... Qa5 {11...Qc8 is not played anymore.} 12. Qxa5 Nxa5 13. Nxf5 Nxf5 14. Bb6 Nc6 15. f4 {[#]} h5 $146 {[%cal Og7g5]} ({Predecessor:} 15... Rc8 16. g3 g5 17. Ne4 Be7 18. g4 Nh4 19. fxg5 Nxe5 20. Bd4 Nd3+ 21. Kb1 O-O 22. Bxd3 cxd3 23. Rxd3 {½-½ (76) So,W (2770)-Le,Q (2709) chess24.com INT 2020}) 16. Bxc4 Rc8 {[%cal Og7g5]} 17. Kb1 Bb4 18. Ne4 $1 Ba5 {[#]} 19. Bxa5 {White is much more active.} ({White should try} 19. Bc5 $1 $16) 19... Nxa5 $11 {Pair of Knights!} 20. Be2 Ke7 21. Rd3 Nc6 (21... Rhd8 $11) 22. Rhd1 $16 {And now Rd7+ would win.} Rc7 {Prevents Rd7+.} (22... Rhd8 $14 {feels stronger.}) 23. Nd6 g6 24. Bf3 Rb8 25. Rc3 Kf8 26. Nxf5 exf5 27. Rd6 Ke7 (27... h4 $16) 28. Bxc6 $18 Rxc6 (28... bxc6 $142 29. Kc2 (29. Rcxc6 Rxc6 30. Rxc6 Rb4 $16) 29... Rb4) 29. Rcxc6 bxc6 30. Rxc6 {[%mdl 4096] Endgame KR-KR} Rb4 31. g3 (31. Rxa6 Rxf4 32. a4 Rg4 $16) 31... a5 {[%cal Oh5h4] [#]} 32. h4 $1 Re4 33. Kc2 Re2+ 34. Kb3 Rg2 $2 (34... Re4 {is a better defense.} 35. Rc7+ Ke6) 35. Rc3 Kd7 36. a3 {[%cal Ba2a3,Ba3a4][%mdl 32] White is clearly winning.} a4+ (36... Ke6 $142 37. Ka4 Rxb2) 37. Kxa4 Rxb2 38. Rb3 {Inhibits Rb8.} Rc2 39. Kb4 Rc8 40. Rd3+ Ke7 41. a4 {Strongly threatening a5.} Rb8+ 42. Kc5 {Weighted Error Value: White=0.04 (flawless) /Black=0.33} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.2"]
[White "Kozak, Antoni"]
[Black "Mirzoev, Azer"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2356"]
[BlackElo "2420"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,95,0,0,-20,0,0,0,0,0,-18,-24,-33,-20,-27,-37,-24,-24,-47,-38,-39,-38,-41,-38,-42,-37,-45,-34,-29,-4,-5,0,-10,-5,-16,-12,-9,-10,-5,-11,-5,0,0,0,0,0,0,0,0,0,0,0,-95,-90,-91,-57,-56,-62,-73,-35,-164,-156,-171,-164,-230,-212,-224,-207,-267,-242,-235,-224,-439,-382,-837,-381,-5252,-5139,-12840,-12840,-12841,-12841,-12841,-12841,-29992,-29993,-29999]} 1. d4 d5 2. Bf4 c5 3. e3 Nc6 4. c3 Nf6 5. Nd2 Bf5 6. Ngf3 e6 $1 {6...e6 is better than 6...Qb6.} 7. Ne5 {D00: 1 d4 d5: Unusual lines.} Nxe5 8. dxe5 Nd7 9. e4 {The position is equal.} dxe4 {[#]} 10. Qe2 $146 ({Predecessor:} 10. Qa4 Be7 11. Nxe4 O-O 12. Rd1 Nb6 13. Qb5 Qc7 14. Nd6 Bc2 15. Rd2 Ba4 16. Qa5 {0-1 (36) Bellon Lopez,J (2351)-Blomqvist,E (2538) Vaxjo 2020}) 10... Qb6 11. O-O-O Qa5 12. a3 Qa4 {[%cal Oe4e3]} 13. g4 Bg6 {[%cal Oe4e3]} 14. Qb5 (14. Bg2 {with more complications.} Be7 15. Bxe4 b5 16. Bxg6 Qxf4 17. Be4) 14... Qxb5 15. Bxb5 a6 16. Ba4 {[%cal Od2e4]} b5 17. Bc2 e3 18. fxe3 Bxc2 19. Kxc2 {[%cal Oa3a4]} Nb6 20. Ne4 Nd5 21. c4 bxc4 22. Nd2 g5 23. Bxg5 Rg8 $1 24. Bf4 Rxg4 25. Rdg1 $1 Rxg1 26. Rxg1 Nxf4 27. exf4 $11 {[%mdl 4096] Endgame KRB-KRN} Rd8 28. Ne4 ({But not} 28. Nxc4 Rd4 29. Kb3 Rxf4 $17) 28... Rd4 29. Nf6+ Ke7 30. Rg4 h5 31. Rh4 (31. Nxh5 $11 Bh6 32. Rg8) 31... Bg7 $17 32. Ng8+ Kd7 {[%cal Og7e5] [#] Hoping for ...Bxe5!} 33. Rxh5 {Strongly threatening Rh7.} Rxf4 {...Rf5 is the strong threat.} 34. Rg5 Bf8 35. Nf6+ {This costs White the game.} (35. Rh5 $1 $15) 35... Kc6 $19 36. Rg8 Be7 37. Ng4 (37. Ra8 $142) 37... Kd5 38. h3 Rf3 39. Re8 Bh4 40. Rh8 Bg3 ({Inferior is} 40... Rxh3 41. Rh7 $17) 41. Rh5 {[#]} (41. Rd8+ Ke4 42. Rc8) 41... Kd4 42. a4 $2 (42. h4) 42... c3 (42... Bf4 $142 {( -> ...Rf1)} 43. Rh8 Rf1 44. Rd8+ Ke4) 43. b3 $2 (43. bxc3+ Rxc3+ 44. Kb2) 43... Rd3 44. Rh7 Rd2+ 45. Kc1 Bf4 46. Rxf7 Rf2+ 47. Kb1 c2+ 48. Ka1 c1=Q# {Weighted Error Value: White=0.70/Black=0.14 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.3"]
[White "Neuman, Petr"]
[Black "Vojta, Jakub"]
[Result "0-1"]
[ECO "A16"]
[WhiteElo "2402"]
[BlackElo "2289"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,70,20,0,0,-4,0,-1,-6,0,0,-15,-18,-39,0,-70,-66,-78,-68,-77,0,-57,0,-12,0,0,0,0,15,40,46,17,25,0,0,0,0,-68,-66,-48,-31,-98,-59,-54,-69,-75,-69,-104,-102,-100,-131,-88,-95,-97,-91,-118,-92,-138,-129,-322,-300,-422,-337]} 1. c4 Nf6 2. Nc3 e5 3. e3 d5 4. cxd5 Nxd5 5. Nf3 Nc6 6. d3 Be7 {A28: English Opening: Four Knights Variation.} 7. Be2 Be6 8. O-O O-O {The position is equal.} 9. Qc2 f5 10. Bd2 Nb6 11. a3 {[#]} g5 $146 {[%cal Bg7g5,Bg5g4][%mdl 32]} ({Predecessor:} 11... Bf6 12. b4 a6 13. Rab1 Qe7 14. Bc1 g6 15. h3 Rfd8 16. Bb2 Rd6 17. Nd2 Qf7 {1-0 (55) Diaz Rubi,F (2234)-Reina Guerra,E (2057) ICCF email 2019}) 12. Rfd1 ({Better is} 12. d4 $11) 12... g4 $15 13. Ne1 a5 14. b3 {[%cal Od3d4] Inhibits a4.} h5 {Black is more active.} (14... Rc8 $17) 15. Na4 (15. d4 $1 $11) 15... Nxa4 (15... Qe8 $15) 16. bxa4 $11 Bd6 17. Rab1 Ra7 18. Rb5 {[%cal Od3d4]} Bxa3 19. d4 exd4 20. Bc4 (20. Nd3 $5 {[%cal Rd3f4]} Bd6 21. Nc5 Bxc5 22. Rxc5 $11) 20... Qe7 21. e4 Bxc4 22. Qxc4+ Qf7 23. Qxf7+ (23. Qe2 $11 Qe6 24. Qd3) 23... Rxf7 $15 24. exf5 {[%cal Of5f6]} b6 25. Nd3 ({White should try} 25. f6 $1 $15) 25... Ne7 26. f6 $1 Rxf6 {White must now prevent ...c5.} 27. Rxh5 {[#]} c5 $1 {[%cal Bc7c5,Bc5c4,Bc4c3][%mdl 32]} 28. Rh4 c4 $36 {[%mdl 2048] Black is on the roll.} 29. Ne5 c3 {...Nc6 is the strong threat.} 30. Rxg4+ Kh7 31. Bc1 {[#]} Bxc1 32. Rxc1 Rf5 33. Nf3 ({White should play} 33. Re4) 33... Rxf3 $1 $17 34. gxf3 (34. Rh4+ $17 {was called for.} Kg7 35. Rxd4) 34... Rd7 $19 35. f4 (35. Kf1 {is the only way for White.} d3 36. Rc4 (36. Rxc3 $2 d2 $19)) 35... Nf5 {Weighted Error Value: White=0.29 (precise) /Black=0.10 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.4"]
[White "Van Osch, Mees"]
[Black "Haring, Filip"]
[Result "0-1"]
[ECO "B32"]
[WhiteElo "2364"]
[BlackElo "2398"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,78,18,20,29,25,33,8,13,8,59,27,43,52,53,53,54,54,56,59,54,55,59,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-385,-371,-320,-102,-5173,-5173,-29991,-29992,-29992,-29992,-29992,-29989,-29989,-29990,-29990,-29991,-29991,-29992,-29992,-29993]} 1. e4 c5 2. Nf3 {[%cal Bg1f3,Bf3d4,Bd4b5,Bb5a3,Ba3c4][%mdl 32]} Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. N1c3 a6 7. Na3 Be6 8. Nc4 Rb8 {B32: Sicilian: Löwenthal and Kalashnikov Variations.} 9. g3 h5 10. h4 {[#]} Nd4 $146 {The position is equal.} ({Predecessor:} 10... g6 11. Bg5 f6 12. Bd2 Nge7 13. Ne3 d5 14. exd5 Nxd5 15. Bg2 Nxc3 16. Bxc3 Qxd1+ 17. Rxd1 {½-½ (44) Saric,I (2653)-Horvath,D (2455) Reykjavik 2021}) 11. Ne3 g6 ({Black should try} 11... Nf6 $11) 12. Bg2 Bh6 13. Ncd5 Bxd5 14. Nxd5 Bxc1 15. Rxc1 Nf6 16. Nxf6+ Qxf6 17. c3 Nc6 18. O-O (18. Qa4 $14) 18... g5 $1 $11 19. hxg5 Qxg5 20. Qxd6 h4 21. Rcd1 {Bh3 is the strong threat.} Rd8 $1 22. Qc7 {aiming for Rxd8+.} hxg3 23. Rxd8+ Nxd8 24. Rd1 {And now Qd7+ would win.} gxf2+ 25. Kxf2 {Strongly threatening Qd7+.} Qf4+ 26. Kg1 {[%csl Gc7][%cal Rd1d8]} Qh2+ 27. Kf1 {[%csl Gc7][%cal Rd1d8]} Ne6 28. Qb8+ (28. Qxb7 Qf4+ 29. Ke2 Qg4+ 30. Ke1 (30. Kf2 $2 Qxd1 31. Qb8+ Qd8 $19) 30... Rh2 $17) 28... Ke7 29. Qxb7+ Kf8 {Hoping for ...Qf4+. Dancing on a razor blade.} 30. Qb8+ $2 {[%mdl 8192]} (30. Qxa6 $2 Qf4+ 31. Ke1 Qg3+ 32. Kd2 Qxg2+ 33. Kc1 Rh2 34. Qd6+ Kg7 $19) (30. Rd3 $11 {and White has nothing to worry.}) 30... Kg7 $19 31. Qb6 {[#]} Rh6 $2 ({Inferior is} 31... Nf4 32. Qg1 $11) (31... Nd4 $1 $19 {[%mdl 512] and Black stays clearly on top. ( -> ...Qf4+)} 32. Rxd4 (32. cxd4 $2 Qf4+ 33. Ke2 Qg4+ 34. Kf2 Qxd1 $19) 32... Qf4+ 33. Ke1 (33. Ke2 $2 Rh2 $19) 33... Qe3+ 34. Kd1 Qg1+ 35. Kc2 exd4) 32. Rd2 $2 {[%mdl 8192] [#] Now White is beyond hope.} (32. Qf2 $17) 32... Nd4 $1 {[%mdl 512]} 33. Qb8 (33. Qxh6+ Qxh6) 33... Qf4+ {Black mates.} 34. Kg1 Qe3+ 35. Rf2 Qe1+ 36. Bf1 Rg6+ 37. Kh1 Qxf2 {[%csl Gg6][%cal Rf2g1]} 38. Qxe5+ Kh7 {[%csl Gf2][%cal Rg6g1]} 39. Qh2+ Rh6 {Weighted Error Value: White=0.87/Black=0.12 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.5"]
[White "Carlsson, Ludvig"]
[Black "Urkedal, Frode Olav Olsen"]
[Result "1-0"]
[ECO "E36"]
[WhiteElo "2355"]
[BlackElo "2553"]
[Annotator "TA"]
[PlyCount "161"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,161,12,6,10,0,0,0,21,0,0,0,0,0,0,0,18,0,0,0,10,0,0,0,0,0,10,6,15,4,31,24,25,0,22,24,25,32,32,17,64,53,100,61,64,56,64,65,79,64,64,64,64,64,69,80,69,64,158,154,167,139,159,158,166,158,160,139,158,88,160,159,147,150,108,65,108,65,65,36,73,65,75,75,106,0,72,70,70,72,72,72,72,65,65,72,65,80,65,65,65,65,65,65,65,65,66,65,91,65,72,8,8,8,8,0,0,0,45,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,29974,29977,29977,29978,29975,29978,29978,29980,29979,29981,29981,29982,29985,29982,29977,4133]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 {[%cal Bd7d5,Bd5d4][%mdl 32]} 5. a3 Bxc3+ 6. Qxc3 O-O 7. Bg5 c5 {E36: Nimzo-Indian: Classical: 4...d5 5 a3.} 8. dxc5 d4 $1 9. Qf3 $1 {[%mdl 4] is more profitable than 9.Qg3 at the moment.} e5 {[#] The position is equal.} 10. Bxf6 $146 (10. e3 {is more complex.} Nbd7 11. exd4 exd4 12. O-O-O Nxc5 13. Ne2) ({Predecessor:} 10. e3 Nbd7 11. O-O-O Nxc5 12. exd4 exd4 13. Bxf6 Qxf6 14. Qxf6 gxf6 15. Ne2 Rd8 16. b4 {1-0 (57) Theodorou,N (2554)-Raja,H (2472) Lichess.org INT 2020}) 10... Qxf6 11. Qxf6 gxf6 12. e3 dxe3 13. fxe3 a5 14. O-O-O Be6 15. Rd6 Rc8 16. Ne2 Nd7 17. Nc3 Nxc5 18. Be2 Kf8 19. Rhd1 Ke7 20. Rb6 Ra6 (20... Rc6 $5 {[%cal Rc6b6]} 21. Rb5 b6 $14) 21. Rxa6 Nxa6 22. b3 Rd8 23. Rxd8 Kxd8 $11 {[%mdl 4096] Endgame KBN-KBN} 24. Kc2 f5 25. Bf3 e4 (25... b6 $11) 26. Be2 $14 Ke7 (26... b6 $14) 27. Nb5 Kf6 28. Kc3 Ke5 29. g3 Bd7 30. Nd4 b6 31. b4 axb4+ 32. axb4 Nc7 33. Bh5 Be6 34. Bd1 Kd6 (34... Bd7 $14) 35. Ba4 $16 Na6 36. Be8 Ke5 37. Nb5 {White is more active.} h6 38. Nd4 Nc7 39. Ba4 Bc8 40. Bb3 (40. Nc6+ $142 Kf6 41. Na7) 40... Na6 (40... Kd6 $142) 41. Ne2 Nc7 42. Nf4 Be6 (42... Kd6 $142 43. Bc2 Be6) 43. Bd1 (43. Ba4 $16) 43... Kd6 (43... b5 $14) 44. Be2 ({Better is} 44. Ba4 $16) 44... Ke5 $14 45. Nh3 Kd6 46. Bh5 Ke5 47. Nf4 Na6 48. Be2 {[%cal Oc4c5] Hoping for c5!} Nc7 49. c5 b5 50. Bd1 (50. Nxe6 fxe6 51. Kd2 Kd5 $11) 50... Bc4 51. Bh5 Be6 52. Be2 Bd7 53. Bd1 Bc8 54. Bb3 Be6 55. Kb2 (55. Nxe6 fxe6 56. Kd2 Na6 $11) 55... Kf6 56. Kc2 Ke5 57. Kc3 ({Much weaker is} 57. Nxe6 fxe6 58. h3 Na6 $11) 57... Na6 58. Ne2 ({Much worse is} 58. Nxe6 fxe6 59. Bd1 Nc7 $11) 58... Nc7 59. Nd4 Bd5 60. Bxd5 (60. Bd1 {feels hotter.} Be6 61. Nc6+ Kd5 62. Ne7+ Ke5 63. Bh5) 60... Nxd5+ $16 {KN-KN} 61. Kd2 (61. Kb3 $16) 61... Nxb4 $11 62. Nxb5 Kd5 63. Nd6 Ke6 $1 64. Nb5 {Black must now prevent Kc3.} Nc6 (64... Kd5 $11) 65. Kc3 (65. Nd4+ $1 $14 {deserves consideration.} Kd5 66. Nxf5) 65... Kd5 66. Nd6 Kxc5 67. Nxf5 h5 68. Ng7 Ne5 $1 69. Nxh5 {aiming for Nf6.} Ng4 {[%csl LRe3,LRh2] Prevents Nf6.} 70. h4 {[%cal Bh2h4,Bh4h5,Bh5h6][%mdl 32]} Nxe3 71. Nf6 Nd5+ 72. Nxd5 Kxd5 {KPP-KPP} 73. h5 {h6 would kill now.} Ke6 $2 {[%mdl 8192]} (73... Ke5 $11) 74. g4 $1 {White mates.} Ke5 75. Kd2 $1 Ke6 {[#]} 76. Ke3 $1 Ke5 77. h6 Kf6 78. Kxe4 Kg6 {[#]} 79. Ke5 $1 ({Weaker is} 79. g5 f6 $11) 79... Kh7 80. Kf5 Kxh6 81. Kf6 {Weighted Error Value: White=0.09 (flawless) /Black=0.10 (very precise)} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.6"]
[White "Jurcik, Marian"]
[Black "Bomans, Arno"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2397"]
[BlackElo "2246"]
[Annotator "TA"]
[PlyCount "171"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,171,29,29,29,37,0,36,29,29,0,20,18,31,0,17,19,23,22,29,17,29,35,31,31,31,29,36,27,32,26,18,0,12,0,25,0,0,0,0,-25,-14,-37,-36,-43,-32,-42,10,9,69,-7,0,0,13,-3,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-14,-15,-21,-18,-24,-15,-13,-11,-15,0,-52,-60,-62,-57,-43,-40,-61,0,0,0,14,52,59,112,85,116,99,341,30,31,30,20,21,31,28,34,0,52,59,60,63,90,71,78,71,71,72,166,0,248,0,168,0,235,0,0,0,585,571,700,693,741,728,675,653,798,836,867,0,170,0,629,0,0,0,0,0,0,0,0,0,0,0,12840,12841,12841,12841,12842,12842,12842,12843,12845,12845]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 g6 5. h3 Bg7 6. e5 {B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6.} Ng8 7. O-O Nh6 8. Re1 {White is slightly better.} O-O {[#]} 9. d3 $146 ({Predecessor:} 9. Ne4 d6 10. exd6 exd6 11. Bxc6 bxc6 12. d4 cxd4 13. Bg5 f6 14. Bxh6 Bxh6 15. Qxd4 {1-0 (58) Travadon,L (2414)-Sahin,O (2281) Podgorica 2021}) 9... Nf5 10. Bf4 Ncd4 11. Bc4 Nxf3+ 12. Qxf3 (12. gxf3 e6 13. d4 Qh4 $17) 12... Nd4 {[%csl LRc2,LRf3]} 13. Qd1 Ne6 14. Bg3 b6 15. Bd5 Rb8 {[%cal Ba8b8,Bb8b7,Bb7c7,Bc7c6,Bc6g6][%mdl 32]} 16. Ne4 Bb7 17. Bxb7 Rxb7 18. c3 Rc7 19. Qg4 Rc6 20. f4 d5 21. Nd2 Nc7 22. f5 gxf5 23. Qxf5 Rg6 24. Bh4 Ne6 25. Rf1 Bh6 26. Rad1 Qc7 {[%cal Oe6f4]} 27. Kh1 Ng7 (27... Bg5 $15 28. Bf2 Qc6) 28. Qf2 $11 e6 (28... Qxe5 29. Rde1 Qf5 30. Qxf5 $16) (28... Ne6 $11) 29. Nf3 (29. g4 $1 $14) 29... Nf5 {[%cal Od5d4]} 30. Rde1 Nxh4 31. Qxh4 Qd8 32. Qh5 Bg7 33. d4 Rh6 34. Qg4 Rg6 35. Qh5 Rh6 36. Qg4 Rg6 37. Qh4 Qxh4 38. Nxh4 Rg3 39. Nf3 Bh6 40. Re2 cxd4 41. cxd4 Rc8 {Prevents Rc2.} 42. Kg1 Rc4 43. Kf2 Bf4 44. Rd1 b5 45. Rd3 (45. Ne1 $11) 45... b4 $1 $15 46. a3 a5 47. axb4 axb4 48. Rd1 b3 ({Better is} 48... h5 $15) 49. Ne1 $11 f6 (49... Rg7 $5 {[%cal Rh7h5]}) 50. exf6 Rg6 51. Rxe6 Kf7 (51... Bg5 $14) 52. Rb6 $16 Rc2+ 53. Kf1 $1 (53. Nxc2 bxc2 54. Rh1 (54. Rb7+ Kxf6 55. Rf1 c1=Q $17) 54... c1=Q 55. Rxc1 Bxc1 $17) 53... Rg3 $2 (53... Rxf6 $16 {is a better defense.} 54. Rxb3 (54. Nxc2 $2 bxc2 55. Rxf6+ Kxf6 $19) 54... Bg3+ 55. Nf3 (55. Kg1 Bf2+ 56. Kh2 Bxe1 $16) 55... h6) 54. Rxb3 $2 Rxb3 $11 55. Nxc2 Rxb2 $18 {[%mdl 4096] Endgame KRB-KRN} 56. Ne1 Be3 57. Nd3 {To avoid Rf2+} Rb3 58. Nc5 Rb2 (58... Rb4 $11) 59. Rd3 $14 Bg5 60. Rf3 {Nd7 is the strong threat.} Rb1+ 61. Ke2 {And now Nd7 would win.} Rb2+ 62. Kd3 $1 {Threatens to win with g4.} Rxg2 63. Nd7 $1 {Hoping for Ne5+.} Ra2 (63... Bh6 $16 {was called for.}) 64. Ne5+ $2 (64. Rf5 $1 $18 {[%cal Rf5g5]} Ke6 65. Rxg5 Ra3+ 66. Ke2 Kxd7 67. Re5 (67. Rxd5+ Ke6 $16)) 64... Kf8 $2 (64... Ke6 $1 $11) 65. Nd7+ Kf7 66. Ne5+ (66. Rf5 $142 $1 {[%cal Rf5g5]} Ke6 67. Rxg5 Ra3+ 68. Ke2 Kxd7 69. Re5 (69. Rxd5+ Ke6 $16)) 66... Kf8 $18 67. f7 $2 (67. Rf5 $18 Ra3+ 68. Kc2) 67... Ra3+ $11 68. Ke2 Ra2+ $2 {[%mdl 8192]} (68... Rxf3 $11 {and Black stays safe.} 69. Kxf3 h5) 69. Kf1 $18 {Threatening mate with Nd7+.} Ra1+ 70. Kg2 {Nd7+ would kill now.} Ra7 {Inhibits Nd7+.} 71. Kg3 Be7 72. Kg4 Bd6 73. Kf5 $1 Re7 74. Rd3 $2 ({White has to play} 74. Re3 $1 $18 Bxe5 75. Rxe5 (75. dxe5 Rxf7+ 76. Ke6 d4 $16) 75... Rxf7+ 76. Ke6) 74... Bb8 $2 {[#]} (74... Bxe5 $11 {and Black is okay.} 75. dxe5 Rxf7+ 76. Ke6 Ra7) 75. Kf6 $2 (75. Re3 $1 $18) 75... Rb7 $2 {[%mdl 8192]} (75... Bxe5+ $11 76. dxe5 Rxf7+ 77. Ke6 Ra7 78. Rxd5 Re7+ 79. Kd6 Kf7) 76. Ke6 $2 ({Only move:} 76. Ra3 $18) 76... Re7+ $11 77. Kxd5 Bxe5 78. dxe5 {[%cal Bd4e5,Be5e6,Be6e7][%mdl 32]} Rxf7 {KR-KR} 79. Ra3 {Black must now prevent Ra8+.} Rd7+ 80. Ke6 Re7+ 81. Kd6 Rb7 $2 {[%mdl 8192] [#]} (81... Kf7 $11) 82. Ra8+ $1 $18 {White is clearly winning.} Kg7 83. e6 Rb6+ 84. Kd7 Rb7+ 85. Kc6 Rb3 86. e7 {Weighted Error Value: White=0.21 (precise) /Black=0.21 (precise)} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.7"]
[White "Dev, Shah"]
[Black "Czerw, Dawid"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2243"]
[BlackElo "2396"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,106,10,19,18,38,27,28,19,16,-8,62,72,72,64,59,52,50,40,56,28,164,160,153,89,104,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-56,-55,-68,-17,-23,-21,-18,-11,-12,-22,-154,-154,-150,-141,-178,-163,-173,-163,-170,-154,-163,-136,-179,-176,-209,-138,-137,-137,-225,-140,-130,-107,-165,-106,-203,-107,-262,-264,-279,-268,-399,-382,-367,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. g3 Bf5 5. Nc3 e6 6. Nh4 {D11: Slav Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4.} Bg4 7. h3 Bh5 8. Qb3 $1 {[%mdl 4] White has an edge. is currently scoring better than 8.g4.} Qb6 9. c5 Qc7 (9... Qxb3 $11 10. axb3 Be7) 10. Bf4 $14 Qc8 {[%cal Ob7b6]} 11. g4 $36 {[%mdl 2048] White fights for an advantage.} Bg6 12. Nxg6 hxg6 13. Bg2 Nbd7 14. g5 {[#]} Ng8 $146 (14... Nh5 $11 {and Black stays safe.} 15. Bh2 b6) ({Predecessor:} 14... Nh5 15. Bh2 Be7 16. h4 Bd8 17. e3 Bc7 18. Bxc7 Qxc7 {½-½ (41) Oparin,G (2652)-Goryachkina,A (2593) Sochi 2021}) 15. e4 $1 $18 {[%cal Re4d5]} Ne7 16. exd5 {White is much more active.} (16. O-O-O $142 $1) 16... Nxd5 $16 17. Bxd5 ({White should try} 17. Nxd5 $16 cxd5 18. O-O-O) 17... exd5 $11 18. O-O-O Be7 $1 19. Rde1 {Bd6 is the strong threat.} Nf8 $1 20. h4 Ne6 21. Be5 Qd7 22. Ne2 f6 23. gxf6 gxf6 24. Bg3 Kf7 25. Qd3 b6 {[%cal Bb7b6,Bb6c5][%mdl 32]} 26. Nf4 Nxf4 27. Bxf4 {[%cal Oh4h5]} Rh5 28. Rh3 ({White should play} 28. b4 $11) 28... bxc5 29. Rhe3 ({But not} 29. Rg3 $2 Qf5 30. Qxf5 (30. Qe3 $2 Re8 $19) 30... Rxf5 $19) 29... Bf8 (29... Re8 $1 $15 30. dxc5 Rxh4) 30. Re6 {[%cal Of4g5]} Rf5 {Prevents Bg5.} 31. h5 Rxh5 32. dxc5 Bxc5 {Hoping for ...Rah8.} 33. Qc3 (33. Qc2 $11 Bb4 34. Rxc6) 33... d4 $17 34. Qb3 {White threatens Re7+ and mate.} Kg7 35. Qf3 {[%cal Of4d6] Strongly threatening Bd6!} Qd5 {Prevents Bd6.} 36. Qxd5 Rxd5 (36... cxd5 37. Rc6 Bf8 38. Rc7+ Kg8 39. Bd2 $15) 37. Rxc6 {[#]} g5 $1 38. Bd2 Rad8 39. b4 (39. f4 $17 {might work better.}) 39... Bd6 $19 40. Kc2 d3+ 41. Kb3 Be5 42. Be3 (42. Rd1 $17) 42... R8d7 43. Rd1 g4 44. Ra6 (44. Rc4 $17) 44... Bb8 (44... d2 $19 45. Rxa7 Rd3+ 46. Kc4 Rc3+ 47. Kb5 Rxa7 48. Bxa7 Bf4) 45. Bd2 (45. Rc6 $17) 45... f5 (45... Rf5 $19 46. Be3 Rf3) 46. Re1 $2 (46. a4 $17 {keeps fighting.}) 46... Be5 47. Kc4 Bd4 48. Ree6 (48. Rf1 {is the only way for White.}) 48... Bb6 {Threatens to win with ...Rd4+.} ({Stronger than} 48... Bxf2 49. Rg6+ Kf8 50. Rgf6+ Kg7 51. Rg6+ Kf8 52. Rgf6+ Kg8 53. Rg6+ Kh7 54. Rh6+ Kg8 55. Rhg6+ Kf8 $11) 49. a4 {[%cal Ba2a4,Ba4a5][%mdl 32] [#]} f4 $2 ({Inferior is} 49... Bxf2 50. Rg6+ Kh7 51. Rh6+ Kg7 52. Rhg6+ Kh8 53. Rh6+ Kg8 54. Rhg6+ Kf8 55. Rgf6+ Kg8 56. Rg6+ Kh8 57. Rh6+ Kg8 58. Rhg6+ $11) (49... Rd4+ $1 $19 50. Kb3 Re4) 50. a5 $1 $11 {The position is equal.} Bxf2 51. Rg6+ Kf7 52. Raf6+ Ke7 53. Re6+ Kf7 {White used his chance.  Weighted Error Value: White=0.26 (precise) /Black=0.26 (precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.8"]
[White "Novotny, Michal"]
[Black "Hrabusa, Matej"]
[Result "1/2-1/2"]
[ECO "A59"]
[WhiteElo "2236"]
[BlackElo "2369"]
[Annotator "TA"]
[PlyCount "45"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,26,37,54]} 1. d4 {Reeh,O} Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bxa6 7. e4 Bxf1 8. Kxf1 d6 9. Nf3 Bg7 10. g3 O-O 11. Kg2 Nbd7 12. h3 {12.a4 gains popularity.} Qa5 13. Re1 Rfb8 {[#]} {Predecessor:} 14. e5 $146 {A59: Benko/Volga Gambit: White castles by hand.} dxe5 15. Nxe5 Nxe5 16. Rxe5 Rb7 17. Qe2 Qb6 18. a4 Kf8 19. Ra3 Ne8 20. Re3 Bh6 21. Re6 fxe6 22. Bxh6+ Kg8 23. Rb3 {1-0 (23) Sargissian,G (2678)-Caruana,F (2662) Ohrid 2009 CBM 133 [Reeh,O]} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.9"]
[White "Hrbek, Stepan"]
[Black "Sorm, Daniel"]
[Result "1-0"]
[ECO "A20"]
[WhiteElo "2179"]
[BlackElo "2348"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,75,17,7,3,0,20,16,58,-7,82,0,0,-11,-13,-13,-5,-25,-10,-27,0,-2,-13,-32,-16,-27,-29,-46,-35,-70,-70,-66,-44,-42,-47,-50,-32,-49,-10,-10,21,15,58,31,210,203,206,216,214,222,205,204,203,197,209,206,176,115,177,91,348,244,265,242,270,195,29980,6108]} 1. c4 e5 2. g3 d6 3. Nc3 f5 4. Bg2 Nf6 5. d3 Be7 6. f4 exf4 {A21: English Opening: 1...e5 2 Nc3.} 7. gxf4 Ng4 8. Nf3 Bh4+ {[#]} (8... c6 $11 {is more appropriate.}) 9. Kf1 $146 ({White should try} 9. Nxh4 $14 Qxh4+ 10. Kd2) ({Predecessor:} 9. Nxh4 Qxh4+ 10. Kd2 Qf2 11. Qf1 Qe3+ 12. Kc2 Qe6 13. Nd5 Na6 14. h3 Nh6 15. Bd2 {1-0 (57) Mgeladze,T (2293)-Gelashvili,T (2520) Batumi 2003}) 9... Bf2 (9... c6 $11 {remains equal.}) 10. d4 (10. Qa4+ $16 Bd7 11. Qb3) 10... Be3 $11 11. Qd3 Bxc1 12. Rxc1 O-O 13. h3 Nf6 14. e3 Na6 15. a3 c6 16. Nd2 Bd7 17. Bf3 Qe7 18. Kf2 Nc7 19. Rcg1 d5 20. Rg3 Ne4+ 21. Bxe4 fxe4 22. Qe2 Qh4 23. Kg2 Rf6 24. Rg5 Rh6 {[%cal Rd7h3]} 25. Qf2 Qxf2+ 26. Kxf2 {[%cal Rc4d5]} Rxh3 $2 ({Black should play} 26... Be6 $14) 27. Rxh3 $18 Bxh3 28. cxd5 cxd5 29. Nxd5 Nxd5 30. Rxd5 $11 {[%mdl 4096] Endgame KRB-KRN} Rc8 31. Nxe4 Rc2+ 32. Kg3 Bg2 33. Rd8+ Kf7 {[#]} 34. Ng5+ (34. Nf2 $1 $18 Bc6 35. d5) 34... Kg6 $2 {[%mdl 8192]} (34... Ke7 $16 35. Rg8 h6) 35. Rd6+ Kh5 36. Nxh7 {Black must now prevent Re6.} Bh1 37. Ng5 g6 $2 {[#]} (37... Rxb2 $18 38. Rd7 Rg2+ 39. Kh3 Re2) 38. Rd7 {Weighted Error Value: White=0.22 (precise) /Black=0.58} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.10"]
[White "Mikes, Jan"]
[Black "Cholleti Sahajasri"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2329"]
[BlackElo "2235"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,75,22,16,31,18,18,23,25,31,0,25,24,41,67,73,37,84,56,59,61,71,41,68,79,66,79,47,16,68,77,147,81,194,208,200,190,377,379,480,467,621,633,562,603,781,764,837,835,997,958,1284,1293,1365,1222,1134,1126,1243,1196,1714,1635,2385,1988,29981,29982,29982,29977,29980,6100]} 1. e4 c6 2. d4 d5 3. f3 dxe4 4. fxe4 e5 5. Nf3 Bg4 6. c3 {B12: Caro-Kann: Advance Variation.} Nd7 7. Bd3 Bd6 8. O-O {White has an edge.} Ngf6 9. Na3 $1 {[%mdl 4] now scores much better than the old 9.Nbd2.} b5 (9... Bxa3 $5 10. bxa3 O-O $14) 10. Nc2 Bh5 11. Ne3 {[#]} Bg6 $146 ({Predecessor:} 11... O-O 12. Nf5 Qc7 13. Qc2 Bg6 14. Nxd6 Qxd6 15. Bg5 c5 16. dxe5 Nxe5 17. Nxe5 Qxe5 18. Bxf6 gxf6 19. Bxb5 Bxe4 {½-½ (60) Caruana,F (2828)-Firouzja,A (2728) Stavanger 2020}) 12. a4 (12. Nh4 {keeps more tension.} O-O 13. Nef5 Qc7 14. Kh1 c5 15. d5) 12... a6 (12... O-O $1 $14) 13. axb5 (13. Nh4 {is interesting.} O-O 14. Nef5 Qc7 15. Qf3 c5 16. d5) 13... axb5 14. Rxa8 Qxa8 15. Nh4 $1 Qb8 (15... Bxe4 $2 16. Bxe4 Nxe4 17. Nef5 $18 (17. Qf3 Ng5 $16) (17. Qg4 Nef6 $11)) 16. Kh1 (16. Nxg6 hxg6 17. h3 Qa7 $11) 16... O-O 17. Nef5 $1 ({Much worse is} 17. Nxg6 hxg6 18. Bb1 c5 $11) 17... Re8 18. Qf3 ({But not} 18. Nxd6 Qxd6 19. Nxg6 hxg6 $11) 18... Bf8 (18... Bh5 $11 19. Qg3 Bf8) 19. g4 $14 {White is more active. White leaves nothing to chance now.} ({Reject} 19. Nxg6 hxg6 20. Ng3 Qd6 $11) 19... Qa8 ({Black should try} 19... Kh8) 20. Ng3 (20. g5 $142 Nh5 21. Nxg6 fxg6 22. Nh6+ $1 gxh6 23. Qf7+ Kh8 24. Qxd7) 20... h6 (20... Nb6 $16) 21. Nxg6 $18 fxg6 {[#]} 22. h4 {[%cal Bh2h4,Bh4g5][%mdl 32] Prevents g5. aiming for g5.} Qa2 $2 (22... Re7 23. Be3 Nh7) 23. g5 hxg5 24. hxg5 Nh7 25. d5 Re7 {Inhibits Qf7+.} 26. dxc6 Nb8 27. Bxb5 {[%cal Bd3b5,Bb5c4,Bc4d5,Bd5e6][%mdl 32] Black must now prevent Qd3.} Qe6 28. Kg2 Nxc6 29. Qe2 {Strongly threatening Bc4.} Kh8 30. Bc4 Qd7 31. Rd1 Qc8 32. Rh1 {And now Qd1 would win.} Nd8 {[#]} 33. Nf5 $1 {[%cal Oe2d3][%mdl 512] Threatens to win with Qd3!} Rc7 (33... Re6 34. Bd5) 34. Bd5 {[%cal Oe2g4] White wants to mate with Qg4!} Ne6 {[#]} 35. Qg4 $1 {Nh4 would kill now.} Bc5 {[#]} (35... Qa6 36. Nd4) 36. Rxh7+ $1 {[%mdl 512] White mates.} Kxh7 37. Qh3+ Kg8 38. Bxe6+ {Weighted Error Value: White=0.07 (flawless) /Black=0.76} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.11"]
[White "Lim, Zhuo Ren"]
[Black "Matras, Ondrej"]
[Result "1-0"]
[ECO "D71"]
[WhiteElo "2311"]
[BlackElo "2223"]
[Annotator "TA"]
[PlyCount "111"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,111,22,52,55,48,46,55,55,56,52,55,76,79,63,67,66,67,64,107,103,175,169,167,105,124,121,131,145,164,137,200,121,210,222,195,204,207,210,215,211,212,212,329,211,206,112,120,123,118,106,88,59,114,112,138,71,197,185,179,175,137,75,85,21,21,8,8,8,8,8,1017,985,2137,6230,6444,6065,3054,2442,29985,29986,29987,29983,29988,29984,29988,29985,29991,29992,29992,29993,29994,29995]} 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 c5 6. Nf3 Nc6 7. O-O cxd4 8. Nxd4 Nxd4 9. Qxd4 d6 10. Qd3 a6 11. Rd1 Qc7 12. Bd2 {A39: Symmetrical English vs ...g6: 4 Bg2 Bg7 5 Nf3 Nf6 6 0-0 0-0 7 d4.} Be6 13. b3 {[#]} Nd7 $146 ({Predecessor:} 13... Ng4 14. Rac1 Qb6 15. Qf3 Rab8 16. h3 Ne5 17. Qe3 Qxe3 18. Bxe3 b6 19. Nd5 Bxd5 20. cxd5 {½-½ (62) Szuhanek,R (2476)-Pantelic,S (2300) Banja Vrujci 2017}) 14. Rac1 {White is slightly better.} Rac8 15. Qf3 Rb8 16. Nd5 Qd8 17. Qe3 (17. e4 {keeps more tension.} b6 18. Qe2 Nc5 19. f4 Re8 20. Ne3) 17... Bxd5 18. cxd5 Re8 19. Bh3 Kf8 (19... Ra8 $14) 20. Rc2 $16 Rc8 (20... b5 $16) 21. Rxc8 $18 Qxc8 22. Ba5 (22. Rc1 $18 Qd8 23. Qa7) 22... f5 $16 23. Rc1 {Prevents Qc2.} Qb8 24. g4 {[%cal Bg3g4,Bg4g5][%mdl 32]} b6 25. Bc3 (25. gxf5 $6 bxa5 26. fxg6 Nf6 $16) 25... Nf6 26. g5 Ne4 (26... Nxd5 $2 27. Bxg7+ Kxg7 28. Qd4+ Nf6 29. Rc6 $18) (26... Nh5 $16) 27. Bxg7+ $18 Kxg7 28. f3 Nc5 {[%cal Be4c5,Bc5d7,Bd7b6,Bb6c4][%mdl 32]} 29. b4 Nd7 30. Qc3+ $1 Kg8 31. e4 Rf8 (31... Qa8 $142 32. Qe3 (32. exf5 Qxd5 33. fxg6 Ne5 $18) 32... Nf8) 32. f4 b5 33. Qc7 {To avoid Qa7+} (33. exf5 $18 gxf5 34. Qd3) 33... Qb6+ 34. Qxb6 {Active counter play!} Nxb6 $16 {[%mdl 4096] Endgame KRB-KRN} 35. Rc6 Rb8 36. Kf2 Kg7 ({Better is} 36... h6 $1 $14) 37. Rc7 ({Don't play} 37. exf5 Nxd5 38. f6+ exf6 $14) 37... Kf8 {[#]} 38. Ke3 ({Weaker is} 38. exf5 Nxd5 39. Ra7 Nxf4 $15) (38. Kf3 $142 $1) 38... Nc4+ (38... Ra8 $16 {was necessary.}) 39. Kd4 $18 fxe4 40. Kxe4 a5 {[#]} 41. bxa5 ({White should play} 41. f5 $1) 41... Nxa5 $16 42. f5 ({White should try} 42. Kd3 $16) 42... b4 $1 $11 43. f6 exf6 44. gxf6 {Black must now prevent Be6.} Rb7 $1 45. Rc1 {aiming for Be6.} b3 $2 {[%mdl 8192]} (45... Kf7 $11) 46. Be6 $18 {[%cal Rc1c8]} ({Not} 46. Rc8+ Kf7 47. Be6+ Kxf6 48. axb3 Nxb3 49. Rf8+ Kg5 $17) 46... Rb8 47. axb3 Nxb3 48. Rc7 Nc5+ 49. Kf3 Nxe6 50. dxe6 {KR-KR. White mates.} Re8 51. Rf7+ Kg8 52. Re7 {[%cal Re7e8]} Ra8 53. Ke4 h5 54. Rg7+ Kh8 55. e7 d5+ 56. Kf4 {Weighted Error Value: White=0.19 (very precise) /Black=0.26 (precise)} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.12"]
[White "Mannion, Stephen R"]
[Black "Keerti Shree Reddy"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2267"]
[BlackElo "1482"]
[Annotator "RC"]
[PlyCount "125"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:02]} c5 {[%emt 0:00:20]} 2. Nf3 {[%emt 0:00:06]} g6 {[%emt 0:00:16]} 3. d4 {[%emt 0:00:18]} cxd4 {[%emt 0:00:03]} 4. Nxd4 {[%emt 0:00:06]} Bg7 {[%emt 0:00:15]} 5. c4 {[%emt 0:00:37]} Nc6 {[%emt 0:00:10]} 6. Be3 {[%emt 0:00:18]} Nf6 {[%emt 0:00:11]} 7. Nc3 {[%emt 0:00:06]} d6 {[%emt 0:01:03]} 8. Be2 {[%emt 0:00:28]} O-O {[%emt 0:00:43]} 9. O-O {[%emt 0:00:28]} Bd7 {[%emt 0:01:22]} 10. Nc2 {[%emt 0:03:18]} Ne5 {[%emt 0:06:29]} 11. f3 {[%emt 0:02:51]} Bc6 {[%emt 0:03:50]} 12. Qd2 {[%emt 0:02:21]} b6 {[%emt 0:05:06]} 13. Rfd1 {[%emt 0:02:47]} Rc8 {[%emt 0:03:02]} 14. Rac1 {[%emt 0:02:22]} Bb7 {[%emt 0:04:07]} 15. b3 {[%emt 0:01:15]} h5 {[%emt 0:03:25]} 16. Nd5 {[%emt 0:05:17]} Ned7 {[%emt 0:14:45]} 17. Nd4 {[%emt 0:05:38]} Ba6 {[%emt 0:02:42]} 18. Bf1 {[%emt 0:04:34]} Kh7 {[%emt 0:09:59]} 19. Kh1 {[%emt 0:03:07]} Nc5 {[%emt 0:06:23]} 20. Bg5 {[%emt 0:10:45]} Ng8 {[%emt 0:05:08]} 21. g3 {[%emt 0:07:59]} Bxd4 {[%emt 0:06:04]} 22. Qxd4 {[%emt 0:00:11]} Ne6 {[%emt 0:00:03]} 23. Qd2 {[%emt 0:00:25]} Nxg5 {[%emt 0:00:15]} 24. Qxg5 {[%emt 0:00:03]} Bb7 {[%emt 0:03:25]} 25. Qe3 Qd7 {[%emt 0:03:47]} 26. Nf4 {[%emt 0:09:55]} Qc6 {[%emt 0:00:34]} 27. Bg2 {[%emt 0:00:19]} Nf6 {[%emt 0:01:37]} 28. h4 {[%emt 0:04:49]} Kg7 {[%emt 0:01:39]} 29. Bh3 {[%emt 0:03:06]} Qc5 {[%emt 0:01:01]} 30. Qd2 {[%emt 0:01:44]} Rcd8 {[%emt 0:02:40]} 31. Nd5 {[%emt 0:00:25]} Rfe8 {[%emt 0:00:38]} 32. b4 {[%emt 0:06:33]} Qc6 {[%emt 0:00:13]} 33. Qb2 {[%emt 0:00:14]} Bc8 {[%emt 0:01:04]} 34. Bg2 {[%emt 0:04:49]} e5 {[%emt 0:00:40]} 35. Rd3 {[%emt 0:07:47]} Be6 {[%emt 0:04:01]} 36. Qd2 {[%emt 0:00:34]} Qc8 {[%emt 0:04:34]} 37. a3 {[%emt 0:01:04]} Rd7 {[%emt 0:01:26]} 38. Nxf6 {[%emt 0:04:56]} Kxf6 {[%emt 0:00:02]} 39. f4 {[%emt 0:00:05]} exf4 {[%emt 0:03:09]} 40. gxf4 {[%emt 0:02:19]} Ke7 {[%emt 0:01:47]} 41. f5 {[%emt 0:32:38]} Bxc4 {[%emt 0:32:12]} 42. f6+ {[%emt 0:00:00]} Kd8 {[%emt 0:00:00]} 43. Rxd6 {[%emt 0:00:00]} Re6 {[%emt 0:00:00]} 44. Rxd7+ {[%emt 0:00:00]} Qxd7 {[%emt 0:00:00]} 45. Qxd7+ {[%emt 0:00:00]} Kxd7 {[%emt 0:00:00]} 46. Rxc4 {[%emt 0:00:00]} Rxf6 {[%emt 0:00:00]} 47. e5 {[%emt 0:00:00]} Rf2 {[%emt 0:00:00]} 48. Bh3+ {[%emt 0:00:00]} Ke7 {[%emt 0:00:00]} 49. Rc7+ {[%emt 0:00:00]} Kf8 {[%emt 0:00:00]} 50. Rxa7 {[%emt 0:00:00]} Re2 {[%emt 0:00:00]} 51. e6 {[%emt 0:00:00]} fxe6 {[%emt 0:00:00]} 52. Rb7 {[%emt 0:00:00]} Re4 {[%emt 0:00:00]} 53. Kg2 {[%emt 0:00:00]} Rxh4 {[%emt 0:00:00]} 54. Bxe6 {[%emt 0:00:00]} Rd4 {[%emt 0:00:00]} 55. Rxb6 {[%emt 0:00:00]} Rd2+ {[%emt 0:00:00]} 56. Kg1 {[%emt 0:00:00]} Rd1+ {[%emt 0:00:00]} 57. Kf2 {[%emt 0:00:00]} Ra1 {[%emt 0:00:00]} 58. Ra6 {[%emt 0:00:00]} g5 {[%emt 0:00:00]} 59. b5 {[%emt 0:00:00]} Ke7 {[%emt 0:00:00]} 60. Bd5 {[%emt 0:01:34]} Kd7 {[%emt 0:00:00]} 61. b6 {[%emt 0:00:29]} Rb1 {[%emt 0:00:00]} 62. b7 {[%emt 0:00:25]} Kc7 {[%emt 0:00:00]} 63. Ra8 {[%emt 0:00:27]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.13"]
[White "Babula, Vlastimil"]
[Black "Ondrus, Martin"]
[Result "0-1"]
[ECO "B87"]
[WhiteElo "2561"]
[BlackElo "2267"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,84,0,0,0,30,3,18,0,88,-65,-71,-69,-94,-102,-101,-77,-87,-84,-102,-197,-93,-280,-279,-345,-225,-297,80,-168,-166,-391,-403,-373,-383,-368,-387,-387,-382,-387,-360,-342,-337,-632,-620,-593,-586,-668,-640,-610,-656,-592,-589,-539,-441,-1355,-1534,-1454,-1156,-29985,-29986,-29986,-29987,-29987,-29988,-29990,-247]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 b5 8. O-O Be7 9. Qf3 Qb6 10. Be3 Qb7 11. a3 O-O 12. g4 {[%cal Bg2g4,Bg4g5][%mdl 32] B87: Sicilian Scheveningen/Najdorf: 6 Bc4, with early ...b5.} Nbd7 13. g5 Ne5 14. Qg2 {The position is equal.} Nfd7 {[#]} (14... Nfg4 15. Bc1 $16) (14... Nh5 $1 $11) 15. Nf5 $146 ({Predecessor:} 15. Rad1 Nc4 16. Bc1 Qb6 17. Rfe1 Bb7 18. Qh3 Nc5 19. Bxc4 bxc4 20. Re3 Bxg5 21. Rg3 Bxc1 22. Rxc1 Nxe4 23. Nxe4 Bxe4 24. Nxe6 fxe6 25. Qxe6+ {0-1 (51) Munoz,F (2159)-Reyes Rios,J (2010) Medellin 2013}) 15... exf5 $15 16. Bd5 Qb8 $1 {And now ...Nc5 would win.} 17. exf5 {[#]} Ra7 18. f6 (18. Bxa7 Qxa7) 18... Bd8 19. fxg7 Kxg7 20. Qh3 (20. f4 $17 Bb6 21. Qh3 Bxe3+ 22. Qxe3) 20... Bb6 (20... Nb6 $1 $19 21. Qh6+ Kg8) 21. Qh6+ (21. Be4 $17 h5 22. Qf5 (22. Qxh5 $2 Rh8 $19) (22. Bxb6 Nxb6 23. Qg3 Qc7 $19)) 21... Kh8 $1 $19 22. Be4 {[%csl Ge4][%cal Rh6h7]} Ng6 {Hoping for ...f5.} 23. Nd5 Re8 $2 {[#]} ({Better is} 23... f5 $1 $19 {[%cal Rf5e4]} 24. gxf6 Nxf6 $1 25. Bxb6 (25. Bxg6 $2 Rg7 $19) 25... Rg7) 24. Bxb6 $2 (24. Nxb6 $2 Rxe4 25. Nxc8 Rg4+ 26. Kh1 {[#]} Qxc8 $1 $19) (24. Bf5 $1 $16 {stays on course.} Bd8 25. Rad1) 24... Rxe4 {Black keeps a firm grip on the game.} 25. Rfe1 $2 (25. f4 f5 26. Bd8 (26. Bxa7 $2 Qxa7+ 27. Rf2 Nde5 $19)) 25... Rg4+ 26. Kf1 {White wants to mate with Re8+.} Nde5 27. Bd8 {Intending Bf6+ and mate.} ({Don't go for} 27. Nf6 $2 Rh4 28. Rxe5 dxe5 $19) ({Not} 27. Bxa7 $2 Qxa7 28. Rxe5 (28. Nf6 $2 Rh4 $19) 28... dxe5 $19) 27... f5 {[%cal Bf7f5,Bf5g4][%mdl 32]} 28. Bf6+ Kg8 29. Bxe5 dxe5 {The board is on fire.} 30. Nf6+ Kh8 {White must now prevent ...Rh4.} 31. Rad1 $2 (31. Nxh7 Rxh7 32. Qxg6) 31... Be6 32. Nxg4 fxg4 33. Rd2 Rd7 34. Rxd7 Bxd7 35. Rd1 {Inhibits Qd6.} Be6 36. Ke2 e4 {[%cal Be5e4,Be4e3][%mdl 32] Strongly threatening ...b4.} 37. Kd2 (37. Ke1 $142 Qb6 38. c3) 37... Qf4+ 38. Ke1 Bg8 {( -> ...e3)} 39. Ke2 {Prevents e3.} Qf3+ {Black mates.} 40. Kd2 Qxf2+ 41. Kc1 e3 42. Rd7 Qf1+ {Weighted Error Value: White=0.94/Black=0.30} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.14"]
[White "Blahynka, Martin"]
[Black "Nielsen, Andre"]
[Result "0-1"]
[ECO "A89"]
[WhiteElo "2399"]
[BlackElo "2232"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,70,45,35,59,0,16,-18,0,-23,-37,-8,18,6,227,0,0,0,0,-6,0,-107,-97,-122,-106,-113,-121,-102,-122,-116,-114,-105,-104,-108,-125,-162,-154,-234,-259,-280,-284,-431,-424,-418,-424,-736,-721,-628,-506,-482,-466]} 1. c4 f5 2. Nc3 Nf6 3. Nf3 g6 4. g3 Bg7 5. Bg2 O-O 6. O-O d6 7. d4 Nc6 8. d5 Ne5 9. Nxe5 dxe5 10. e4 f4 11. b4 g5 12. Re1 a6 {A89: Dutch Defence: Leningrad System: 5 Nf3 0-0 6 0-0 d6 7 Nc3 Nc6.} 13. Bb2 (13. a4 $14) 13... Qe8 $11 14. c5 {[%cal Bc4c5,Bc5d6,Bd6c7][%mdl 32] [#]} Qg6 $146 {The position is equal.} ({Predecessor:} 14... Ng4 15. Rc1 Qh5 16. h3 f3 17. Bxf3 Qxh3 18. Rc2 Rf7 19. Na4 Bd7 20. c6 bxc6 21. dxc6 Be6 22. Nc5 Raf8 23. Rc3 Qh2+ 24. Kf1 Qxf2# {0-1 (24) Michniewski,T (2190)-Duch,M (2249) Miedzyzdroje 2009}) 15. d6 exd6 16. cxd6 Qf7 17. dxc7 {Nd5 is the strong threat.} Ng4 $2 {[#]} (17... Ne8 $1 $11) 18. f3 $2 (18. Qb3 $1 $18) 18... Ne3 $1 19. Rxe3 fxe3 20. Nd5 $1 {Threatens to win with Nb6.} Be6 21. Nxe3 (21. Qc2 $11) 21... Qxc7 $17 22. Nd5 {To avoid Qb6+} Bxd5 23. Qxd5+ Kh8 24. Rc1 Qb6+ 25. Qc5 Qxc5+ 26. bxc5 Rad8 27. Bc3 {Inhibits Rd2.} Rc8 28. Ba5 g4 {Inhibits Bh3.} 29. Kf2 (29. fxg4 $17 Bh6 30. Re1) 29... Rf6 $19 30. Bd2 Rfc6 31. Rb1 (31. Bf1 {might work better.}) 31... Rxc5 32. Rxb7 Rc2 {[%csl LRa2,LRd2]} 33. Rd7 (33. Ke1 $142 Bh6 34. Bxh6 Rxg2 35. fxg4) 33... Bh6 34. Ke2 gxf3+ 35. Bxf3 Rxa2 {Weighted Error Value: White=0.53/Black=0.23 (precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.15"]
[White "Plischki, Sebastian"]
[Black "Koubova, Anna Marie"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2375"]
[BlackElo "2148"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,67,18,20,10,18,20,24,16,10,2,10,2,19,0,0,-6,8,0,0,-6,-8,-11,-16,-18,-14,-3,41,-74,-32,-37,-34,-35,-31,-129,-124,-118,-135,-111,-123,-188,-191,-189,-185,-253,-239,-253,-197,-206,-197,-297,-179,-188,0,0,0,0,558,549,1764,891]} 1. Nf3 d5 2. g3 Nd7 3. Bg2 e5 4. d3 Ngf6 5. O-O Be7 6. c4 {A07: Réti Opening: New York and Capablanca Systems.} c6 7. cxd5 cxd5 8. Nc3 {[#] White has an edge.} h6 $146 ({Predecessor:} 8... O-O 9. a3 b6 10. Nh4 Bb7 11. Nf5 h6 12. Bd2 a5 13. Rc1 Ra7 14. Nb5 Ra8 {1-0 (32) Petrosian,T (2625)-Babikov,I (2301) Minsk 2015}) 9. d4 e4 10. Ne5 O-O 11. f3 Re8 12. Nxd7 Qxd7 13. Bf4 exf3 14. Bxf3 Bd6 15. Bg2 Qd8 16. Rc1 Bg4 17. Qd2 {[%cal Of4h6]} ({Avoid the trap} 17. Nxd5 $2 Bxe2 18. Qb3 (18. Nxf6+ $2 Qxf6 19. Qd2 Bxf1 $19) 18... Bxf1 19. Rxf1 Bxf4 20. Nxf6+ Qxf6 $19) 17... Rc8 {[#]} (17... Re6 $11) 18. e3 (18. Bxh6 $1 $14 {stays ahead.} Ne4 19. Nxe4 Rxc1 20. Rxc1 (20. Qxc1 dxe4 21. Bg5 Qd7 $16) 20... dxe4 21. Be3) 18... Bxf4 (18... Bb4 $17) 19. Rxf4 $15 Rc6 20. Rcf1 Rce6 21. Kh1 (21. Re1 $15) 21... Rxe3 $17 22. Rxf6 gxf6 {[%cal Bg7f6,Bf6f5][%mdl 32]} 23. Nxd5 R3e6 {[%cal Be3e6,Be6d6,Bd6d4][%mdl 32]} ({Don't take} 23... Re2 24. Qxh6 R8e6 25. Nxf6+ Rxf6 26. Qxf6 (26. Rxf6 Re1+ 27. Rf1 Rxf1+ 28. Bxf1 Bf3+ 29. Bg2 Bxg2+ 30. Kxg2 Qxd4 $14) 26... Qxf6 27. Rxf6 $16) 24. Qxh6 (24. Nf4 $17 {was called for.} Rd6 25. d5) 24... f5 $19 25. Qc1 Rd6 26. Nf4 (26. Nc3 {was worth a try.}) 26... Rxd4 27. Bxb7 Re7 28. Bg2 Rd2 {White must now prevent ...Be2.} 29. h3 {[#]} (29. Qc3 $142 Rc7 30. Qe3) 29... Rd1 $1 30. Qc3 {[#]} (30. Qc4 Rxf1+) 30... Be2 (30... Rc7 $1 $19 31. Qe3 Rxf1+ 32. Bxf1 {[#]} Qd1 $1) 31. Rxd1 $11 {Really sharp!} Qxd1+ 32. Kh2 Ba6 $2 {[%mdl 8192]} (32... Qd6 $11 {and Black has nothing to worry.}) 33. Qf6 $18 {[%csl LRa6,LRe7,LRf5]} Re6 34. Nxe6 {Weighted Error Value: White=0.26 (precise) /Black=0.49} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.16"]
[White "Hlavina, Matous"]
[Black "Kulhanek, Tomas"]
[Result "0-1"]
[ECO "C10"]
[WhiteElo "2125"]
[BlackElo "2323"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,96,25,17,22,24,26,19,22,0,0,-8,-6,0,0,-2,0,0,0,-65,-64,-56,-29,-24,0,0,0,-25,0,-4,0,-8,-9,-68,-71,-81,-22,-150,-157,-192,-116,-195,-189,-191,-116,-107,-102,-108,-80,-84,-78,-173,-164,-230,-213,-200,-230,-236,-217,-231,-231,-277,-277,-295,-293,-310,-303,-303,-303,-303,-275,-303,-303,-362,-308,-534,-554,-546,-541,-657,-602,-747,-726,-1025,-966]} 1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Bd3 Ngf6 6. Nf3 Nxe4 {6...Nxe4 has become a bit dusty these days.} 7. Bxe4 Nf6 8. Bg5 Qd6 {C10: French with 3 Nc3: Unusual Black 3rd moves and 3...dxe4.} 9. Bxf6 {is the legacy move (9.Bd3).} gxf6 10. Qe2 Bd7 {The position is equal.} 11. O-O-O O-O-O 12. Kb1 f5 13. Bd3 Bg7 14. Rhe1 Bc6 15. c3 {[#]} Qf4 $146 ({Predecessor:} 15... Bf6 16. g3 Kb8 17. Ne5 Bxe5 18. Qxe5 Qxe5 19. Rxe5 Rd5 20. Rde1 Rhd8 21. Kc2 a6 {½-½ (84) Kosintseva,T (2539)-Xu,Y (2485) Sochi 2009}) 16. h3 (16. Qe3 $11 Qg4 17. Rg1) 16... Rhg8 17. Rg1 Bf6 {[%cal Og8g2]} 18. Ne1 Qh2 19. Nf3 Qf4 {[%cal Og8g2]} 20. Ne1 Rg7 21. g3 Qh6 22. Ng2 Qxh3 23. Nf4 ({White should try} 23. Ne3 $1 $11) 23... Qg4 $36 {[%mdl 2048] Keeping White busy.} 24. Qc2 Rgg8 (24... Bf3 $17 {White must now prevent ...Bg5.} 25. Be2 Bxe2 26. Nxe2 Kb8) 25. Qb3 (25. Be2 $11 {remains equal.} Qg5 26. d5 exd5 27. Bf3) 25... Bf3 $1 $17 {Strongly threatening ...Bg5.} 26. Rde1 {[#]} Kb8 (26... Bg5 $1 $19 {[%cal Rg5f4]} 27. Ne2 h5) 27. a4 (27. Be2 $17) 27... Bg5 $19 28. Ng2 Bd2 {A strong pair of Bishops.} ({Better is} 28... c5 $19 29. Ne3 Qh5) 29. Re5 $17 Bd5 30. Qc2 Bg5 {[%cal Oc7c5] Black is more active.} 31. Be2 Qh3 32. Rxd5 exd5 $19 ({Inferior is} 32... Rxd5 33. Bf3 $15) 33. Bf3 {[#]} (33. Ne1 {was worth a try.}) 33... f4 $1 34. Nxf4 Bxf4 35. Rh1 Qe6 36. gxf4 h6 37. a5 Qa6 38. b4 Qf6 39. Qd2 a6 40. Kb2 c6 41. Rh5 Ka7 42. Qe3 Rg1 43. f5 Rg5 44. Qe5 $2 (44. Rxg5 Qxg5 45. Qxg5 hxg5 46. Kb3) 44... Qxe5 {Black is clearly winning.} 45. dxe5 Re8 46. e6 fxe6 {Threatens to win with ...Rf8.} 47. Rxg5 hxg5 48. Bh5 Rh8 {Weighted Error Value: White=0.41/Black=0.11 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.17"]
[White "Pham, Khoi"]
[Black "Acor, Corey"]
[Result "0-1"]
[ECO "C62"]
[WhiteElo "2114"]
[BlackElo "2303"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,68,25,75,75,73,71,95,81,84,82,109,79,75,47,53,48,71,54,94,83,83,54,54,49,48,44,58,57,77,77,76,59,83,83,85,81,82,-20,-20,-36,-56,-104,0,0,0,-97,0,-131,-131,-130,-130,-126,-128,-563,-562,-688,-693,-681,-672,-613,-489]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 {[%cal Bd2d4,Bd4d5][%mdl 32]} Bd7 5. Nc3 Nge7 (5... exd4 $11 {keeps the balance.} 6. Nxd4 Be7) 6. d5 $16 {C62: Ruy Lopez: Steinitz Defence.} Nb8 7. Be2 g6 8. Be3 {White is better.} Bg7 9. Qd2 {[#]} h6 $146 ({Predecessor:} 9... f5 10. g3 O-O 11. h4 f4 12. gxf4 exf4 13. Bxf4 Bg4 14. Ng5 Bd7 15. h5 Bf6 16. Nxh7 Kxh7 17. hxg6+ Kxg6 {1-0 (24) Satosuo,R (2002)-Azzi,R (1510) ICCF email 2019}) 10. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} f5 11. g3 {Inhibits f4.} fxe4 12. Nxe4 Nf5 13. O-O-O a5 14. h5 g5 15. Nh2 O-O 16. Ng4 {[%cal Re3g5]} Nxe3 17. Nxe3 Na6 18. c3 b6 19. Bd3 Qe8 20. Bb1 Rf3 21. Qc2 Qf7 22. Nd2 {Pair of Knights!} Rf6 (22... Rxf2 $2 23. Rdf1 Rf4 24. gxf4 $18) 23. g4 (23. Rdf1 $16) 23... Rxf2 $11 24. Rdf1 Rf4 $1 {Active counter play!} 25. Ng2 (25. Qh7+ $15 {might be stronger.} Kf8 26. Bf5) 25... Bxg4 ({Black should play} 25... Nc5 $17 26. Nxf4 exf4) 26. Nxf4 exf4 27. Qh7+ Kf8 28. Re1 (28. Rhg1 $1 $11 Bh3 29. Re1) 28... Nc5 $17 (28... Bxh5 $2 29. Rxh5 Nc5 30. Bg6 $18) 29. Bg6 Qxd5 {...Be6 is the strong threat. Chess con chili.} 30. Rhg1 {[%cal Oe1e7] Threatens to win with Re7!} Be6 {And now ...Bg8 would win.} (30... Qxa2 $2 {[#]} 31. Re7 $3 {[%mdl 512]} (31. Rxg4 Na4 $11) (31. Bb1 Qg8 $16) 31... Qg8 32. Rf7+ Qxf7 33. Bxf7 Kxf7 34. Rxg4 $18) 31. Re2 $2 {[%mdl 8192] White does not recover from this.} (31. Be4 $17 {was the crucial defense.} Nxe4 32. Rxe4) 31... Bg8 $19 {Black is clearly winning.} ({Not} 31... Qxa2 32. Rge1 Rd8 33. Rxe6 Nxe6 34. Bb1 $11) 32. Rge1 {[#] Intending Re8+ and mate.} Nd3+ $1 {[%mdl 512]} 33. Bxd3 {aiming for Qg6.} Bxh7 34. Bxh7 Rd8 {Weighted Error Value: White=0.43/Black=0.09 (flawless)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.18"]
[White "Unneland, Mathias"]
[Black "Kukucka, Matej"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "2262"]
[BlackElo "2104"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,104,23,31,20,29,29,31,30,37,9,18,0,0,7,0,0,0,0,0,0,10,0,8,18,9,-16,-15,-8,-14,-17,0,-15,0,0,0,0,0,-25,0,0,0,0,0,-5,-5,-13,-19,-8,-16,-58,-10,-35,-7,-22,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,0,0,0,0,8,8,8,0,0]} 1. c4 e6 2. d4 d5 3. Nf3 a6 4. cxd5 exd5 5. Nc3 c6 6. Qc2 {D31: Queen's Gambit Declined: Semi-Slav without ...Nf6 (+ Marshall Gambit and Noteboom) and Exchange Variation lines without ...Nf6.} Nf6 7. Bg5 Be6 8. e3 {White is slightly better.} h6 9. Bh4 Nbd7 10. Bd3 Bd6 11. O-O O-O 12. Bg3 Bxg3 13. hxg3 Re8 {[#]} 14. Rfc1 $146 ({Predecessor:} 14. Qd2 Qb8 15. Rac1 Qd6 16. a3 a5 17. Qc2 b5 18. a4 b4 19. Ne2 Rac8 20. Nf4 {½-½ (40) Lundin,J (2114)-Raja,R (2408) Belgrade 2021}) 14... Rc8 15. Rab1 c5 16. dxc5 Nxc5 17. Bf5 Nce4 18. Bxe6 fxe6 19. Qb3 Qe7 20. Rc2 Nxc3 21. Rxc3 Ne4 22. Rc2 Rc7 23. Nd2 Rxc2 (23... Nxd2 {keeps more tension.} 24. Rxd2 Rc4 25. Qd3 Rec8 26. Re1 Qg5) 24. Qxc2 Nxd2 25. Qxd2 $11 {[%mdl 4096] Endgame KQR-KQR} Rc8 26. e4 Qc5 27. Rd1 dxe4 28. Qd7 {[%csl LRb7,LRe6]} Qc6 29. Qd4 (29. Qe7 $11) 29... Qc2 (29... Qd5 $15 30. Qa4 Qf5) 30. Re1 Qd3 (30... Rf8 $5 {[%cal Re6e5]}) 31. Qb4 {The position is equal.} e3 (31... Rc2 {is interesting.} 32. Qxb7 e3 33. fxe3 Kh7 34. a3 a5) 32. Rxe3 Rc1+ 33. Re1 Rxe1+ 34. Qxe1 {KQ-KQ} Qd5 35. a3 Kf7 36. Qe2 Ke7 37. Qg4 Kf6 38. Qe2 Qb3 39. Qd2 Qb5 40. Qd4+ Kf7 41. g4 Qc6 42. Kh2 Qb5 43. Kg3 e5 44. Qc3 Qd5 45. Kh2 e4 46. a4 Qd6+ 47. g3 Qd5 {Prevents Qb3.} 48. Qc2 g5 49. Qc7+ Kg6 50. Qe7 Qd4 51. Qe6+ Kg7 52. Qe7+ Kg6 {Weighted Error Value: White=0.06 (flawless) /Black=0.05 (flawless)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.19"]
[White "Lorans, Sylvain"]
[Black "Macicek, Jakub"]
[Result "1-0"]
[ECO "E20"]
[WhiteElo "2110"]
[BlackElo "2250"]
[Annotator "RC"]
[PlyCount "67"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:03]} Nf6 {[%emt 0:00:18]} 2. c4 {[%emt 0:00:05]} e6 {[%emt 0:00:15]} 3. Nc3 {[%emt 0:00:07]} Bb4 {[%emt 0:00:29]} 4. f3 {[%emt 0:00:08]} c5 {[%emt 0:04:41]} 5. d5 {[%emt 0:00:06]} b5 {[%emt 0:02:05]} 6. e4 {[%emt 0:00:09]} d6 {[%emt 0:00:54]} 7. Bd2 {[%emt 0:02:30]} a6 {[%emt 0:09:29]} 8. a4 {[%emt 0:01:41]} bxa4 {[%emt 0:18:15]} 9. Qxa4+ {[%emt 0:02:01]} Bd7 {[%emt 0:02:14]} 10. Qc2 {[%emt 0:01:01]} e5 {[%emt 0:00:17]} 11. Bd3 {[%emt 0:03:31]} Ng8 {[%emt 0:11:19]} 12. Nge2 {[%emt 0:07:39]} Ne7 {[%emt 0:00:08]} 13. O-O {[%emt 0:01:09]} Ng6 {[%emt 0:00:12]} 14. f4 {[%emt 0:10:36]} exf4 {[%emt 0:00:08]} 15. Nxf4 {[%emt 0:00:04]} Ne5 {[%emt 0:02:14]} 16. Be2 {[%emt 0:09:35]} Bc8 {[%emt 0:09:43]} 17. Qc1 {[%emt 0:03:15]} O-O {[%emt 0:11:07]} 18. Nh5 {[%emt 0:02:08]} f6 {[%emt 0:02:21]} 19. Qe1 {[%emt 0:04:11]} Ra7 {[%emt 0:02:24]} 20. Qg3 {[%emt 0:03:56]} Kh8 21. Bf4 {[%emt 0:06:26]} g6 {[%emt 0:11:23]} 22. Nb5 {[%emt 0:03:17]} Raf7 {[%emt 0:03:00]} 23. Nxd6 {[%emt 0:01:40]} Qxd6 {[%emt 0:00:49]} 24. Nxf6 {[%emt 0:00:06]} Nbc6 {[%emt 0:05:11]} 25. dxc6 {[%emt 0:01:51]} Qd4+ {[%emt 0:00:08]} 26. Kh1 {[%emt 0:05:04]} Nxc6 {[%emt 0:00:07]} 27. Bh6 {[%emt 0:06:01]} Rd8 {[%emt 0:00:25]} 28. Rad1 {[%emt 0:02:46]} Qxb2 {[%emt 0:00:34]} 29. Rxd8+ {[%emt 0:00:11]} Nxd8 {[%emt 0:00:06]} 30. Qd6 {[%emt 0:02:34]} Ba5 {[%emt 0:03:47]} 31. Ne8 {[%emt 0:02:44]} Rxf1+ {[%emt 0:00:46]} 32. Bxf1 {[%emt 0:00:03]} Ne6 {[%emt 0:00:45]} 33. Bg7+ {[%emt 0:00:23]} Nxg7 {[%emt 0:00:11]} 34. Qf8# {[%emt 0:00:06]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.20"]
[White "Vales, Vaclav"]
[Black "Torngren, Gustav"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "2106"]
[BlackElo "2228"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,80,1,-6,-3,-31,-13,-52,-47,-48,-51,-60,-48,-47,-25,-37,0,-89,-25,-20,-20,-31,-16,-41,-32,-41,-31,-31,-23,-30,-26,-54,-28,-14,0,0,6,9,77,4,11,0,0,0,0,-8,17,5,0,-77,-77,-75,-75,-421,-400,-413,-414,-418,-423,-420,-411,-433,-430,-508,-492,-522,-520,-522,-519,-566,-535]} 1. Nf3 e6 2. g3 d5 3. Bg2 Be7 4. d3 b6 5. c4 Bb7 6. Nbd2 Nf6 7. O-O O-O {A05: Réti Opening: 1 Nf3 Nf6.} 8. h3 {[#]} d4 $146 ({Predecessor:} 8... c5 9. b3 Nc6 10. a3 Qc7 11. Nb1 h6 12. Nc3 d4 13. Nb5 Qd7 14. a4 a6 {0-1 (26) Solomin,D-Kapkan,E (1939) Vladivostok 2008}) 9. Ne5 Bxg2 {Black is slightly better.} 10. Kxg2 Nfd7 11. Ndf3 Nxe5 12. Nxe5 Bf6 13. Ng4 Be7 (13... c5 {is more complex.} 14. e4 dxe3 15. Qf3 e2 16. Re1 Na6) 14. Qa4 (14. Ne5 $11) 14... Qd7 ({Black should try} 14... c5 $17) 15. Qxd7 $11 Nxd7 16. Bd2 a5 17. b3 Ba3 18. Nh2 e5 19. Nf3 Bb4 20. Rfd1 Rfe8 21. e4 dxe3 22. Bxe3 a4 23. d4 e4 24. Ng1 Ra6 {[#]} (24... axb3 $11 25. axb3 f5) 25. Ne2 (25. a3 $1 $16 {[%cal Ra3b4]} Bc3 26. Rab1 axb3 27. Rxb3) 25... Rea8 26. Rab1 {[%cal Oa2a3]} axb3 27. axb3 Ra2 $36 {[%mdl 2048] Black is pushing.} 28. Kf1 h6 29. g4 Nf6 {[%cal Bd7f6,Bf6h5,Bh5f4,Bf4h3][%mdl 32]} 30. g5 (30. Ng3 $11) 30... hxg5 $17 {Black is more active.} 31. Bxg5 Nh5 32. Bf4 $2 {[%mdl 8192] [#] White does not recover from this.} (32. d5 $17) 32... Rxe2 $1 $19 {[%mdl 512]} 33. Kxe2 Nxf4+ 34. Ke3 Nxh3 35. Ra1 Rd8 36. Ra7 Bd6 {Black is clearly winning.} 37. Rda1 Ng5 38. Ra8 Rxa8 39. Rxa8+ Kh7 40. Rc8 f5 {Weighted Error Value: White=0.46/Black=0.15 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.21"]
[White "Thompson, Ian D"]
[Black "Bochnicka, Vladimir"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "2095"]
[BlackElo "2222"]
[Annotator "RC"]
[PlyCount "74"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. Nf3 {[%emt 0:00:04]} f5 {[%emt 0:00:08]} 2. d4 {[%emt 0:02:09]} Nf6 {[%emt 0:00:08]} 3. Bg5 {[%emt 0:04:37]} e6 {[%emt 0:00:26]} 4. Nbd2 {[%emt 0:00:40]} Be7 {[%emt 0:00:24]} 5. Bxf6 {[%emt 0:06:32]} Bxf6 {[%emt 0:00:09]} 6. e4 {[%emt 0:00:09]} O-O {[%emt 0:00:30]} 7. Bd3 {[%emt 0:00:38]} d5 {[%emt 0:00:31]} 8. e5 {[%emt 0:01:59]} Be7 {[%emt 0:00:13]} 9. Qe2 {[%emt 0:04:45]} b6 {[%emt 0:04:14]} 10. O-O {[%emt 0:08:59]} c5 {[%emt 0:03:45]} 11. c3 {[%emt 0:03:52]} Bd7 {[%emt 0:02:01]} 12. a3 {[%emt 0:05:18]} Nc6 {[%emt 0:02:32]} 13. b4 {[%emt 0:06:24]} Be8 {[%emt 0:02:30]} 14. Rfe1 {[%emt 0:12:24]} Bh5 {[%emt 0:06:23]} 15. dxc5 {[%emt 0:12:51]} bxc5 {[%emt 0:02:05]} 16. bxc5 {[%emt 0:00:11]} Bxc5 {[%emt 0:01:31]} 17. Nb3 {[%emt 0:00:59]} Bb6 {[%emt 0:03:44]} 18. c4 {[%emt 0:01:41]} Bc7 {[%emt 0:10:10]} 19. Nc5 {[%emt 0:08:07]} Nd4 {[%emt 0:22:10]} 20. Qe3 {[%emt 0:01:03]} Nxf3+ {[%emt 0:01:22]} 21. gxf3 {[%emt 0:00:03]} f4 {[%emt 0:00:18]} 22. Qe2 {[%emt 0:00:46]} Qe7 {[%emt 0:00:56]} 23. Nxe6 {[%emt 0:02:33]} Qxe6 {[%emt 0:00:51]} 24. cxd5 {[%emt 0:00:08]} Qh3 {[%emt 0:01:01]} 25. Qf1 {[%emt 0:00:53]} Qh4 {[%emt 0:05:56]} 26. Qg2 {[%emt 0:02:21]} Bb6 {[%emt 0:10:46]} 27. d6 {[%emt 0:02:26]} Bg6 {[%emt 0:02:21]} 28. Bc4+ {[%emt 0:05:50]} Kh8 {[%emt 0:00:53]} 29. e6 {[%emt 0:03:33]} Bf5 {[%emt 0:04:17]} 30. e7 {[%emt 0:02:38]} Bh3 {[%emt 0:00:22]} 31. exf8=Q+ {[%emt 0:00:47]} Rxf8 {[%emt 0:00:06]} 32. Re2 {[%emt 0:00:33]} Bxg2 {[%emt 0:00:21]} 33. Kxg2 {[%emt 0:00:03]} Qg5+ {[%emt 0:01:14]} 34. Kf1 {[%emt 0:00:03]} Qh6 {[%emt 0:01:59]} 35. Re6 {[%emt 0:00:30]} Qxh2 {[%emt 0:00:38]} 36. Ra2 {[%emt 0:00:10]} Qh1+ {[%emt 0:02:14]} 37. Ke2 {[%emt 0:00:02]} Ba5 {[%emt 0:01:15]} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.22"]
[White "Michalczak, Thomas"]
[Black "Mach, Petr"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "2218"]
[BlackElo "2090"]
[Annotator "RC"]
[PlyCount "203"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:02]} d5 {[%emt 0:00:02]} 2. exd5 {[%emt 0:00:25]} Nf6 {[%emt 0:00:04]} 3. d4 {[%emt 0:00:08]} Nxd5 {[%emt 0:00:04]} 4. c4 {[%emt 0:00:05]} Nb6 {[%emt 0:00:03]} 5. Nf3 {[%emt 0:00:06]} g6 {[%emt 0:00:01]} 6. h3 {[%emt 0:00:07]} Bg7 {[%emt 0:00:06]} 7. Nc3 {[%emt 0:00:06]} O-O {[%emt 0:00:04]} 8. Be3 {[%emt 0:00:05]} Nc6 {[%emt 0:00:05]} 9. Be2 {[%emt 0:00:05]} e5 {[%emt 0:00:04]} 10. d5 {[%emt 0:00:05]} Ne7 {[%emt 0:00:03]} 11. g4 {[%emt 0:00:06]} f5 {[%emt 0:00:26]} 12. Qb3 {[%emt 0:00:06]} fxg4 {[%emt 0:20:30]} 13. hxg4 {[%emt 0:01:33]} Bxg4 {[%emt 0:01:28]} 14. Ng5 {[%emt 0:00:10]} Bxe2 {[%emt 0:00:06]} 15. Nxe2 {[%emt 0:07:35]} Nf5 {[%emt 0:06:27]} 16. Rxh7 {[%emt 0:16:04]} Qf6 {[%emt 0:09:47]} 17. Ne4 {[%emt 0:06:55]} Qf7 {[%emt 0:09:47]} 18. O-O-O {[%emt 0:01:07]} Nxe3 {[%emt 0:00:17]} 19. fxe3 {[%emt 0:00:39]} Qf3 {[%emt 0:07:25]} 20. N2g3 {[%emt 0:23:23]} Nxc4 {[%emt 0:06:27]} 21. Rxg7+ {[%emt 0:03:47]} Kxg7 {[%emt 0:00:09]} 22. Qxc4 {[%emt 0:00:15]} Qxe3+ {[%emt 0:00:13]} 23. Kc2 {[%emt 0:06:10]} Rf7 {[%emt 0:05:23]} 24. Rd3 {[%emt 0:02:11]} Qf4 {[%emt 0:05:24]} 25. d6 {[%emt 0:09:16]} cxd6 {[%emt 0:00:16]} 26. Qe6 {[%emt 0:00:20]} Rc7+ {[%emt 0:03:08]} 27. Kb3 {[%emt 0:01:35]} Qf7 {[%emt 0:04:44]} 28. Ng5 {[%emt 0:00:20]} Qd7 {[%emt 0:02:09]} 29. a4 {[%emt 0:08:34]} Re8 {[%emt 0:02:22]} 30. Qxd6 {[%emt 0:00:56]} Qxd6 {[%emt 0:01:26]} 31. Rxd6 {[%emt 0:00:23]} Kh6 {[%emt 0:03:00]} 32. N3e4 {[%emt 0:01:04]} Ree7 {[%emt 0:05:35]} 33. Rd1 {[%emt 0:03:05]} Rc6 {[%emt 0:02:58]} 34. Rh1+ {[%emt 0:03:24]} Kg7 {[%emt 0:00:04]} 35. Rh7+ {[%emt 0:02:11]} Kf8 {[%emt 0:00:06]} 36. Rh8+ {[%emt 0:00:05]} Kg7 {[%emt 0:00:04]} 37. Rh7+ {[%emt 0:00:06]} Kf8 {[%emt 0:00:03]} 38. Rh8+ {[%emt 0:00:13]} Kg7 {[%emt 0:00:23]} 39. Rh2 {[%emt 0:00:09]} Kf8 {[%emt 0:03:21]} 40. Rf2+ {[%emt 0:00:35]} Kg7 {[%emt 0:01:26]} 41. Kb4 {[%emt 0:31:23]} Rec7 {[%emt 0:32:47]} 42. Rh2 {[%emt 0:00:34]} Kg8 {[%emt 0:00:00]} 43. Rh6 {[%emt 0:00:00]} Rd7 {[%emt 0:00:00]} 44. Rh2 {[%emt 0:00:00]} Rd4+ {[%emt 0:00:00]} 45. Ka3 {[%emt 0:00:00]} Rcc4 {[%emt 0:00:00]} 46. b3 {[%emt 0:00:00]} Rxe4 {[%emt 0:00:00]} 47. bxc4 {[%emt 0:00:00]} Rxc4 {[%emt 0:00:00]} 48. Re2 {[%emt 0:00:00]} a6 {[%emt 0:00:00]} 49. Rxe5 {[%emt 0:00:00]} b5 {[%emt 0:00:00]} 50. axb5 {[%emt 0:00:00]} axb5 {[%emt 0:00:00]} 51. Rxb5 {[%emt 0:00:00]} Kg7 {[%emt 0:00:00]} 52. Kb3 {[%emt 0:00:00]} Rc8 {[%emt 0:00:00]} 53. Ne4 {[%emt 0:00:00]} Rf8 {[%emt 0:00:00]} 54. Kc3 {[%emt 0:00:00]} Rf5 {[%emt 0:00:00]} 55. Rb6 {[%emt 0:00:00]} Kh6 {[%emt 0:00:00]} 56. Kd4 {[%emt 0:00:00]} Ra5 {[%emt 0:00:00]} 57. Ke3 {[%emt 0:00:00]} Ra1 {[%emt 0:00:00]} 58. Kf4 {[%emt 0:00:00]} Rf1+ {[%emt 0:00:00]} 59. Kg4 {[%emt 0:00:00]} Rf5 {[%emt 0:00:00]} 60. Nf6 {[%emt 0:00:00]} Kg7 {[%emt 0:00:00]} 61. Ne4 {[%emt 0:00:00]} Kh6 {[%emt 0:00:00]} 62. Ng3 {[%emt 0:00:00]} Ra5 {[%emt 0:00:00]} 63. Kf4 {[%emt 0:00:00]} Rc5 {[%emt 0:00:00]} 64. Rb1 {[%emt 0:00:00]} Ra5 {[%emt 0:00:00]} 65. Rh1+ {[%emt 0:00:00]} Kg7 {[%emt 0:00:00]} 66. Ne4 {[%emt 0:00:00]} Rh5 {[%emt 0:00:00]} 67. Ra1 {[%emt 0:00:00]} Rf5+ {[%emt 0:00:00]} 68. Kg4 {[%emt 0:00:00]} Kh6 {[%emt 0:00:00]} 69. Ra7 {[%emt 0:00:00]} Rb5 {[%emt 0:00:22]} 70. Kg3 {[%emt 0:02:40]} Rb3+ {[%emt 0:00:39]} 71. Kf4 {[%emt 0:00:16]} Rb5 {[%emt 0:00:36]} 72. Kg4 {[%emt 0:00:05]} Rb4 {[%emt 0:00:30]} 73. Re7 {[%emt 0:00:08]} Ra4 {[%emt 0:00:23]} 74. Kf4 {[%emt 0:00:51]} Ra5 {[%emt 0:01:02]} 75. Nf2 {[%emt 0:00:28]} Rf5+ {[%emt 0:00:31]} 76. Kg3 {[%emt 0:00:07]} Ra5 {[%emt 0:00:18]} 77. Kh4 {[%emt 0:01:42]} Rh5+ {[%emt 0:01:46]} 78. Kg3 {[%emt 0:00:07]} Ra5 {[%emt 0:00:07]} 79. Nh3 {[%emt 0:00:08]} Ra3+ {[%emt 0:00:56]} 80. Kg4 {[%emt 0:00:07]} Ra5 {[%emt 0:00:15]} 81. Re6 {[%emt 0:00:47]} Rb5 {[%emt 0:01:07]} 82. Nf4 {[%emt 0:00:20]} Rg5+ {[%emt 0:00:15]} 83. Kh4 {[%emt 0:00:32]} Rg1 {[%emt 0:00:17]} 84. Ra6 {[%emt 0:02:13]} Kh7 {[%emt 0:00:27]} 85. Ne6 {[%emt 0:00:25]} Kh6 {[%emt 0:00:18]} 86. Ra8 {[%emt 0:01:02]} Rh1+ {[%emt 0:01:39]} 87. Kg4 {[%emt 0:00:08]} Rg1+ {[%emt 0:00:08]} 88. Kf4 {[%emt 0:00:13]} Rf1+ {[%emt 0:00:24]} 89. Kg3 {[%emt 0:00:08]} Kh7 {[%emt 0:00:39]} 90. Ra6 {[%emt 0:03:48]} Kh6 {[%emt 0:01:30]} 91. Ra4 {[%emt 0:01:50]} Rf5 {[%emt 0:01:07]} 92. Ra8 {[%emt 0:01:03]} Kh7 {[%emt 0:01:13]} 93. Kg4 {[%emt 0:00:15]} Rf1 {[%emt 0:02:04]} 94. Ng5+ {[%emt 0:00:32]} Kg7 {[%emt 0:00:14]} 95. Ra7+ {[%emt 0:00:04]} Kg8 {[%emt 0:00:23]} 96. Ne6 {[%emt 0:00:30]} Rf6 {[%emt 0:02:17]} 97. Re7 {[%emt 0:00:09]} Rf1 {[%emt 0:00:32]} 98. Kg5 {[%emt 0:00:28]} Rg1+ {[%emt 0:01:56]} 99. Kf6 {[%emt 0:00:26]} Kh8 {[%emt 0:00:09]} 100. Re8+ {[%emt 0:00:26]} Kh7 {[%emt 0:00:14]} 101. Ng5+ {[%emt 0:00:04]} Kh6 102. Rh8# 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.23"]
[White "Jordanov, Mihail"]
[Black "Kudrytskyi, Stanislav"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2193"]
[BlackElo "2057"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,116,42,76,76,60,40,55,54,54,55,64,28,27,27,20,0,0,0,0,0,0,-20,0,0,8,0,2,0,5,0,16,15,22,10,30,3,8,15,58,26,39,39,59,0,42,29,33,15,70,38,51,17,33,22,48,23,47,59,115,122,137,143,213,206,258,134,147,0,242,0,111,21,206,0,0,3,197,203,202,179,200,195,273,272,283,284,283,277,270,269,529,515,795,787,768,758,748,743,29999]} 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 O-O 7. O-O c6 8. Re1 b6 9. h3 Bb7 10. Ba2 a6 {[#]} 11. Nh4 $1 {White is more active. C41: Philidor Defence.} g6 12. Bh6 Re8 13. Nf3 {aiming for Ng5. White is slightly better.} Bf8 14. Bxf8 Nxf8 15. dxe5 dxe5 16. Ng5 Re7 {[#]} 17. Qf3 $146 ({Predecessor:} 17. Re3 h6 18. Rd3 Qe8 19. Nf3 Rd7 20. Rxd7 N8xd7 21. Qd6 Qb8 22. Rd1 Qxd6 23. Rxd6 {1-0 (71) Kriebel,T (2465)-Svatos,J (2293) Czech Republic 2015}) 17... Kg7 18. Rad1 Qc7 19. Qe3 a5 20. g3 Bc8 21. Kg2 Ne6 22. Nxe6+ Bxe6 23. Bxe6 Rxe6 24. Qd2 Rae8 25. Re3 Qe7 26. b3 Qb4 27. f3 R8e7 28. Rd3 Re8 (28... Rd7 $11 {should be considered.}) 29. Qe3 Rb8 30. R1d2 Qe7 31. Rd1 Qb4 32. h4 h5 33. R1d2 Qe7 (33... Rb7 $11) 34. Qg5 Qb4 35. Rd1 (35. Nd1 $5 {[%cal Rd1e3]}) 35... Nh7 36. Qd2 Nf6 (36... Ree8 {is more complex.} 37. Rd6 Qc5 38. Nb1 Nf8 39. Qf2 Qxf2+ 40. Kxf2 Rec8) 37. Nb1 {[%cal Bc3b1,Bb1d2,Bd2c4][%mdl 32]} Qc5 38. Qc3 {Qxc5 is the strong threat.} Qe7 (38... Qb4 $14) 39. Nd2 $16 Kf8 40. Nc4 Qc5 (40... Qc7 $16 41. Rd6 Rbe8) 41. Qd2 Kg7 42. Qf2 (42. Rd6 $18) 42... Qb4 43. Qd2 (43. Rd6 $16 {Threatens to win with Rxe6.} Rxd6 44. Nxd6 (44. Rxd6 b5 $17)) 43... Qc5 $1 $18 44. Qc3 $2 ({Better is} 44. Rd6 $18) 44... Ra8 (44... Kf8 $1 $11) 45. Rd6 (45. Ra1 $16) 45... Rae8 $2 (45... Nd5 $1 $11 {and Black is okay.} 46. R6xd5 (46. exd5 Rxd6 47. Qxe5+ Rf6 $15) 46... cxd5 47. Rxd5 (47. exd5 Rd8 $11) 47... Qc6) 46. Qe3 $2 (46. Rxe6 $18 Rxe6 47. Qd2) 46... Qxe3 $11 47. Nxe3 {Hoping for Rxe6.} b5 $2 (47... Nd5 $1 $11 48. R6xd5 cxd5) 48. Rxe6 $18 Rxe6 {[%mdl 4096] Endgame [#] KRN-KRN} 49. Ra1 $1 bxa4 50. Rxa4 Rd6 (50... Ne8 $142 51. Nc4 (51. Rxa5 Nd6 $16) 51... Nd6 52. Nxa5 (52. Rxa5 Nxc4 53. bxc4 c5 $16) 52... Nb5) 51. Rxa5 Nd7 52. Nc4 Rd1 53. Kf2 {Strongly threatening Ra7.} Kf8 54. Ra6 (54. Nxe5 Nxe5 55. Rxe5 Rd2+ 56. Ke3 Rxc2 $16) 54... c5 $2 (54... Rc1 {keeps fighting.} 55. Ne3 (55. Rxc6 Rxc2+ 56. Kf1 Rc1+ 57. Ke2 Rg1 $16) 55... Nc5) 55. Ra8+ Ke7 (55... Kg7 $142 56. Ra7 Kf6) 56. Ne3 Rd2+ 57. Ke1 Rd6 58. Nd5+ Ke6 59. Re8# {Weighted Error Value: White=0.31/Black=0.47} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.09"]
[Round "4.24"]
[White "Grutter, Tim"]
[Black "Zadrapa, Radek"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2194"]
[BlackElo "2021"]
[Annotator "NA RC"]
[PlyCount "91"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:05]} c5 {[%emt 0:00:05]} 2. Nf3 {[%emt 0:00:09]} d6 {[%emt 0:00:04]} 3. d4 {[%emt 0:00:05]} cxd4 {[%emt 0:00:02]} 4. Nxd4 {[%emt 0:00:05]} Nf6 {[%emt 0:00:03]} 5. Nc3 {[%emt 0:00:05]} a6 {[%emt 0:00:04]} 6. h4 {[%emt 0:00:39]} b5 {[%emt 0:02:26]} 7. a4 {[%emt 0:00:25]} b4 {[%emt 0:08:07]} 8. Nd5 {[%emt 0:00:49]} e6 {[%emt 0:08:41]} 9. Nxf6+ {[%emt 0:01:52]} Qxf6 {[%emt 0:02:28]} 10. Bg5 {[%emt 0:06:23]} Qe5 {[%emt 0:01:45]} 11. Bd3 {[%emt 0:04:47]} Nd7 {[%emt 0:03:11]} 12. Nf3 {[%emt 0:07:41]} Qxb2 {[%emt 0:04:32]} 13. O-O {[%emt 0:01:00]} h6 {[%emt 0:01:33]} 14. Bd2 {[%emt 0:06:41]} Be7 {[%emt 0:07:02]} 15. Qe2 {[%emt 0:06:11]} Qf6 {[%emt 0:05:45]} 16. Bxb4 {[%emt 0:03:27]} O-O $16 {[%emt 0:02:27]} ({Black should play} 16... e5 $14) 17. e5 {[%emt 0:02:56]} Qf4 {[%emt 0:02:52]} 18. exd6 {[%emt 0:07:44]} Qxb4 {[%emt 0:10:13]} 19. dxe7 {[%emt 0:00:30]} Re8 {[%emt 0:00:07]} 20. Rfb1 {[%emt 0:09:12]} Qg4 {[%emt 0:03:57]} 21. Qe3 {[%emt 0:04:22]} Nf6 {[%emt 0:03:56]} 22. Qc5 {[%emt 0:09:01]} Bd7 {[%emt 0:04:14]} 23. Rb4 {[%emt 0:02:44]} Qh5 {[%emt 0:01:30]} 24. Qxh5 {[%emt 0:00:27]} Nxh5 {[%emt 0:00:06]} 25. Ne5 {[%emt 0:00:31]} Ra7 {[%emt 0:08:29]} 26. Nxd7 {[%emt 0:01:14]} Rxd7 {[%emt 0:00:09]} 27. Bxa6 {[%emt 0:00:12]} Rdxe7 {[%emt 0:00:11]} 28. Rb7 {[%emt 0:02:09]} Kf8 {[%emt 0:00:18]} 29. Rab1 {[%emt 0:02:16]} Ra8 {[%emt 0:02:19]} 30. Rxe7 {[%emt 0:02:06]} Kxe7 {[%emt 0:00:05]} 31. Rb7+ {[%emt 0:00:09]} Kd6 {[%emt 0:00:41]} 32. Bb5 {[%emt 0:00:24]} f5 {[%emt 0:00:26]} 33. c4 {[%emt 0:01:53]} Ra5 {[%emt 0:02:44]} 34. Rb6+ {[%emt 0:01:53]} Ke7 {[%emt 0:00:44]} 35. c5 {[%emt 0:00:11]} Nf6 {[%emt 0:00:28]} 36. Rb7+ {[%emt 0:00:11]} Kd8 {[%emt 0:01:20]} 37. Rxg7 {[%emt 0:00:11]} Ne4 {[%emt 0:00:15]} 38. c6 {[%emt 0:00:19]} Nc5 {[%emt 0:01:27]} 39. Rh7 {[%emt 0:01:32]} Nxa4 {[%emt 0:01:05]} 40. c7+ {[%emt 0:00:10]} Kc8 {[%emt 0:00:18]} 41. Bd7+ {[%emt 0:30:05]} Kxc7 {[%emt 0:30:08]} 42. Bxa4+ {[%emt 0:00:05]} Kd6 {[%emt 0:00:23]} 43. Be8 {[%emt 0:00:58]} Ra8 {[%emt 0:01:38]} 44. Bh5 {[%emt 0:00:33]} Ra4 {[%emt 0:00:12]} 45. g3 {[%emt 0:00:24]} f4 {[%emt 0:00:30]} 46. Rxh6 {[%emt 0:01:00]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.1"]
[White "Haring, Filip"]
[Black "Pijpers, Arthur"]
[Result "0-1"]
[ECO "B76"]
[WhiteElo "2398"]
[BlackElo "2485"]
[Annotator "TA"]
[PlyCount "116"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,116,25,30,39,33,34,39,24,23,38,34,47,25,29,29,30,0,0,0,0,0,0,0,0,-31,0,-111,-109,-111,0,-56,-62,-63,-59,-59,-59,-59,-64,-64,-63,-60,-66,-63,-66,-79,-51,-168,-161,-186,-121,-129,-156,-143,-135,-284,-293,-270,-269,-269,-268,-319,-283,-352,-337,-552,-542,-530,-470,-430,-417,-420,-418,-407,-423,-419,-423,-423,-421,-400,-398,-553,-538,-758,-749,-714,-715,-29985,-29986,-29986,-29986,-29986,-29987]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. O-O-O d5 10. exd5 Nxd5 11. Nxc6 bxc6 12. Bd4 Bxd4 13. Qxd4 Qb6 14. Na4 Qc7 {B76: Sicilian Dragon: Yugoslav Attack, 9 g4 and 9 0-0-0.} 15. Bc4 Rd8 16. Nc5 (16. Bxd5 cxd5 17. Nc3 Bb7 $11) 16... Bf5 {White is slightly better.} 17. Bb3 $1 Nb6 18. Qe3 Rxd1+ 19. Rxd1 Qxh2 20. g4 Nd5 $1 {[#]} 21. Qe1 $146 ({Predecessor:} 21. Qd2 Qxd2+ 22. Kxd2 Bc8 23. Ba4 Rb8 24. Bxc6 Nb4 25. Ba4 Rb6 26. a3 Rd6+ 27. Ke1 Rxd1+ 28. Kxd1 {½-½ (33) Keuter,K (2421)-Peuraniemi,P (2452) GER email 2016}) 21... Qd6 $36 {[%mdl 2048] Black is pushing.} 22. Bxd5 cxd5 23. Qe3 Bc8 24. c4 e6 {[%cal Be7e6,Be6e5][%mdl 32]} 25. g5 {[%cal Oc5e4]} Qh2 26. f4 (26. Ne4 $11) 26... e5 $1 $17 {Strongly threatening ...Bf5.} (26... Rb8 27. Qe5 Rb4 28. b3 Qxa2 29. Qc7 Qa3+ 30. Kc2 $16) 27. Qd2 ({Don't go for} 27. Qxe5 $2 Bf5 28. Qc3 Qxf4+ 29. Rd2 Qf1+ 30. Rd1 Qf4+ 31. Rd2 dxc4 $19) 27... Qg3 (27... Qxd2+ $17 28. Rxd2 exf4 29. Rxd5 Bf5) 28. Ne4 Qxf4 $15 (28... dxe4 $2 {leads to mate.} 29. Qd8+ Kg7 30. Qf6+ Kg8 31. Rd8#) 29. Qxf4 exf4 30. cxd5 {[%mdl 4096] Endgame KRB-KRN} Bf5 31. Nf6+ Kg7 32. Rh1 $1 Rc8+ 33. Kd1 h5 {aiming for ...Rc2.} 34. Ke2 Kf8 $1 35. Kf3 Ke7 $1 36. Rh4 (36. b3 $15) 36... Rc1 $19 37. Kxf4 {[#]} Kd6 (37... Rc4+ $1 $19 38. Kg3 Rxh4 39. Kxh4 Kd6) 38. Rh2 Rf1+ 39. Kg3 Bb1 {...Rf5 is the strong threat.} 40. a3 {[#] This move loses the game for White.} (40. Rd2 $17) 40... Rf5 $1 41. Kh4 Rf3 42. Rh1 Bf5 43. Rh2 Rb3 44. a4 a5 45. Rh1 $2 (45. Ng8 {is a better defense.}) 45... Rxb2 46. Kg3 Rb4 47. Rc1 Rxa4 48. Rc6+ Ke5 49. d6 Ra3+ 50. Kf2 Rd3 51. Rc5+ Kxd6 52. Rxa5 h4 {[%cal Bh5h4,Bh4h3,Bh3h2][%mdl 32] Threatens to win with ...h3.} 53. Kg2 Ke6 54. Kf2 h3 55. Rb5 Rd2+ 56. Kg3 h2 {Black mates.} 57. Rb6+ Ke5 58. Rb5+ Kd6 {Weighted Error Value: White=0.44/Black=0.06 (flawless)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.2"]
[White "Mirzoev, Azer"]
[Black "Carlsson, Ludvig"]
[Result "1-0"]
[ECO "D56"]
[WhiteElo "2420"]
[BlackElo "2355"]
[Annotator "TA"]
[PlyCount "135"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,135,24,19,15,8,11,23,31,20,37,20,44,47,28,36,79,55,76,13,52,60,79,62,65,62,74,61,48,46,51,48,71,77,66,68,132,120,152,148,157,113,172,176,180,180,172,172,170,170,177,177,177,176,186,198,199,167,169,168,154,148,181,183,183,187,372,154,164,146,183,178,187,183,184,170,205,204,201,197,215,208,267,217,267,256,391,388,377,375,432,436,522,437,604,586,609,662,638,634,819,836,869,833,1075,1041,904,915,1459,1473,5739,4220,29959,29961,29957,29956,29979,29980,29976,29973,29972,29973,29939,4076]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 h6 6. Bh4 O-O 7. Nf3 Nbd7 8. Rc1 c5 {D63: Queen's Gambit Declined: Classical: 7 Rc1.} 9. dxc5 dxc4 10. c6 $1 {10.c6 is better than 10.Bxc4.} bxc6 {White has an edge.} 11. Bxc4 Rb8 12. Qe2 {[#]} Qa5 $146 ({Predecessor:} 12... Nd5 13. Bxe7 Qxe7 14. O-O N7b6 15. Bd3 e5 16. Nd2 Nxc3 17. Rxc3 Na4 18. Rb3 Be6 {½-½ (34) Lintchevski,D (2524)-Elistratov,S (2407) Moscow 2017}) 13. O-O Bb7 14. Rfd1 {[%cal Od1d7] Hoping for Rxd7!} Rfe8 (14... Rfd8 $14) 15. Nd4 {[%cal Bf3d4,Bd4b3,Bb3a5][%mdl 32]} Nb6 16. Bg3 (16. Nb3 $1 $16 {[%cal Rb3a5]} Qh5 17. Qxh5 Nxh5 18. Bxe7 Nxc4 19. Bd6) 16... Rbc8 17. Nb3 Qh5 18. Bd3 Qxe2 19. Bxe2 (19. Nxe2 Red8 $11) 19... Red8 20. Na5 Ba8 21. Ba6 Rxd1+ 22. Rxd1 Rd8 23. Rxd8+ Bxd8 24. Bb7 {White is more active.} Nc4 25. Bxa8 Bxa5 26. Na4 (26. Bxc6 $6 Nxb2 27. Nb5 a6 $14) 26... c5 {[#]} 27. Bf3 ({But not} 27. Nxc5 $6 Nxb2 28. Ne4 Nxe4 29. Bxe4 Na4 $14) (27. Bc6 $142 $1) 27... Bb4 (27... Nd7 $16 {keeps fighting.}) 28. a3 $18 Ba5 29. Be2 ({Much less strong is} 29. Nxc5 $6 Nxb2 30. Be2 Bb6 $14) 29... Nd2 30. Nxc5 Nfe4 {[#]} 31. Nxe4 Nxe4 {[%mdl 4096] Endgame KBB-KBN} 32. Bb8 Bb6 33. Kf1 f6 34. Bd3 Nc5 35. Bg6 Nd7 36. Bg3 Ne5 37. Bb1 Nc4 38. Ba2 Nxb2 39. Bxe6+ Kh7 $2 (39... Kh8 40. Ke2 Na4) 40. Bd6 (40. Bb3 $18) 40... Na4 $16 41. Ke2 Nc5 42. Bf5+ {This bishop pair is nice.} g6 43. Bc2 Kg7 44. g4 g5 45. a4 {[%cal Oa4a5] a5! is the strong threat.} Nd7 46. h3 Ne5 47. Bb3 Kg6 48. Bb4 a5 49. Ba3 h5 (49... Bc7 $142 50. Be6 Kg7) 50. Bc2+ $18 Kg7 51. gxh5 Kh6 52. Be7 {To avoid Bd8} Nd7 53. Bg6 {Threatens to win with Be8.} ({Weaker is} 53. Bf5 Bc5 $16) 53... Bc5 54. Bd8 Nb6 55. Be8 f5 56. Kd3 {To avoid Nc4} f4 57. exf4 gxf4 58. f3 Be3 59. h4 Kg7 60. Bc7 Kh7 61. Ke4 Nc4 62. Bxf4 {Threatening mate with Bg6+.} Bxf4 63. Kxf4 {KB-KN. White mates.} Kh6 64. Bb5 Nb6 65. Ke5 Kxh5 66. Kd6 Kxh4 67. Kc5 Nc8 68. Bd7 {Weighted Error Value: White=0.14 (very precise) /Black=0.28 (precise)} (68. Ba6 $142 Ne7 69. Kb6 Kg5 70. Kxa5 Kf6 71. Bb7 Nf5 72. Kb6 Ke7 73. a5) 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.3"]
[White "Vojta, Jakub"]
[Black "Jurcik, Marian"]
[Result "0-1"]
[ECO "A22"]
[WhiteElo "2289"]
[BlackElo "2397"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,106,6,8,17,0,20,0,0,0,0,0,12,0,8,13,8,10,16,6,15,-19,-12,-80,-77,-72,-81,-146,-134,-160,-132,-135,-114,-89,-88,-127,-21,-19,-23,-46,-37,-62,-60,-52,-1,-81,-34,-42,-8,-4,-6,-31,-38,-37,-24,-24,-6,-17,-27,-52,-60,-54,-66,-102,-105,-107,-87,-54,0,-81,-28,-28,-28,-75,-29,-250,-266,-266,-267,-267,-267,-243,-256,-254,-239,-275,-257,-455,-455,-444,-444,-318,-249,-547,-544,-462,-462,-882,-701]} 1. c4 e5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nb6 6. e3 {[%cal Be2e3,Be3d4,Bd4d5][%mdl 32]} Nc6 {A22: English Opening: 1...e5 2 Nc3 Nf6.} 7. Nge2 $1 Bg4 {7...h5 is becoming the main line.} 8. d4 exd4 {The position is equal.} 9. exd4 {[#]} Bd6 $146 ({Predecessor:} 9... Bb4 10. O-O O-O 11. h3 Bh5 12. g4 Bg6 13. d5 Ne7 14. Qb3 Bd6 15. Rd1 Re8 {½-½ (34) Herrmann,M-Hawkins,J (1927) ICCF email 2018}) 10. h3 Bf5 11. O-O O-O 12. d5 Ne5 13. Nd4 Bd3 14. Re1 Bg6 $1 15. Bf1 Qf6 16. Ne4 {To avoid Bc5} (16. Bf4 $11 {keeps the balance.}) 16... Bxe4 $17 17. Rxe4 Nxd5 18. Nb5 {[#]} (18. Bf4 $142) 18... Bc5 $1 19. Bf4 (19. Qc2 Bb6) 19... Nxf4 {Black is more active.} 20. Rxf4 Qg6 {Threatens to win with ...Qxg3+.} 21. Qb3 Bb6 22. Nd4 Bxd4 (22... Rad8 $17 23. Nf5 Qe6) 23. Rxd4 $11 b6 24. Bg2 Rad8 25. Rad1 {[%cal Ba1d1,Bd1d4,Bd4f4][%mdl 32]} Rxd4 26. Rxd4 Qf6 (26... Qf5 $15) 27. Qd5 (27. Qc3 $1 $11) 27... c6 (27... c5 $17 28. Rd1 g5) 28. Qd6 $15 Nf3+ 29. Bxf3 Qxf3 $40 {[%mdl 4224] Endgame KQR-KQR. Black is up to no good.} 30. Rf4 (30. Qe7 {is more complex.} h5 31. b3 c5 32. Rd7 Qf5 33. Rxa7 Qxh3 34. Rd7) 30... Qd5 31. Qxd5 cxd5 $15 {KR-KR} 32. Ra4 Ra8 33. Kf1 Kf8 34. Ke2 Ke7 35. Kd3 Kd6 36. Rh4 h6 37. Rf4 Ke6 38. Ra4 Kd6 (38... a5 $15) 39. h4 (39. Rf4 $11) 39... g5 ({Black should play} 39... a5 $17) 40. hxg5 $11 hxg5 41. Ra6 Kc5 (41... g4 $17) 42. a4 $2 {This costs White the game.} (42. g4 $11) 42... Kc6 $19 {White must now prevent ...Kb7.} 43. b4 Kb7 $1 44. b5 {[#]} Rc8 $1 {...Rc4 is the strong threat.} 45. a5 {[#]} Rc5 $1 46. axb6 axb6 47. Ra1 Rxb5 {Strongly threatening ...Rb3+.} 48. Re1 $2 (48. Kd4) 48... Rb3+ 49. Kd4 Rf3 50. Re2 Rf5 51. g4 $2 (51. Rd2) 51... Rf4+ {Black is clearly winning.} 52. Kxd5 f6 53. Ke6 (53. Kd6 $142 Rxg4 54. Ra2) 53... b5 {Weighted Error Value: White=0.49/Black=0.14 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.4"]
[White "Ondrus, Martin"]
[Black "Mikes, Jan"]
[Result "0-1"]
[ECO "B56"]
[WhiteElo "2267"]
[BlackElo "2329"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,74,15,29,-8,13,21,26,0,22,-28,-11,-58,-52,-57,-61,-67,-72,-71,-59,-61,-64,-191,-33,-27,-38,-45,-30,-21,-12,-14,41,38,26,-20,-19,-180,-163,-171,-40,-46,-76,-23,0,0,5,-214,-158,-232,-185,-459,-454,-389,-347,-397,-411,-422,-339]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. f3 e5 7. Nb3 Be7 8. Be3 O-O 9. Qd2 a5 {[%cal Ba7a5,Ba5a4][%mdl 32]} 10. Bb5 Be6 11. Nd5 {Black must now prevent Bb6. Recently 11.0-0-0 got a lot of attention. B56: Classical Sicilian: Unusual Lines.} Bxd5 (11... a4 {keeps more tension.} 12. Bb6 Qb8 13. Bxc6 bxc6 14. Nxe7+ Kh8) 12. exd5 Na7 {[%cal Bc6a7,Ba7c8,Bc8b6][%mdl 32]} 13. Be2 {White has an edge.} a4 14. Nc1 ({White should try} 14. Na5 $1) 14... Nc8 15. c4 (15. O-O $11) 15... b5 $15 16. cxb5 Nb6 17. O-O Nfxd5 18. Bf2 Bg5 19. Qd3 Rc8 {[#] Hoping for ...Bxc1. Black is more active.} 20. a3 $146 (20. Kh1 $1 $15) ({Predecessor:} 20. Qa3 Nf4 21. Bd3 d5 22. Bc5 Re8 23. Bf5 Nc4 24. Qb4 Rxc5 25. Qxc5 Nd3 26. Qb6 Nb4 27. Qb7 Nd6 28. Qa7 Nxf5 29. Qxa4 Be3+ 30. Kh1 Ng3+ 31. hxg3 Qd6 {0-1 (31) Deseatnicov,I (2251)-Navrotescu,C (2443) Eforie Nord 1999}) 20... f5 $2 (20... Bxc1 $19 21. Raxc1 (21. Rfxc1 $2 Rxc1+ 22. Rxc1 Nf4 $19) 21... Rxc1 22. Rxc1 Nf4) 21. Na2 Nf4 $36 {[%mdl 2048] White is under pressure. Pair of Knights!} 22. Qd1 d5 $1 23. Nb4 d4 24. Re1 Kh8 (24... Nfd5 $11) 25. Bf1 $14 Qf6 26. g3 (26. Nc6 $142) 26... Ne6 $11 {[%cal Oe5e4,Bf4e6,Be6g5,Bg5e4][%mdl 32]} 27. Nd3 $2 (27. f4 $11 exf4 28. g4) 27... Nc4 $19 {aiming for ...Be3.} 28. f4 {[#]} e4 29. fxg5 (29. Rc1 e3) 29... Nxg5 30. Bg2 exd3 (30... e3 $5 {[%cal Re3f2]} 31. Re2 (31. Qxa4 exf2+ 32. Nxf2 f4 $17) 31... exf2+ 32. Rxf2 Qe7 $11) 31. Qxd3 Ne5 {[#]} 32. Qe2 (32. Rxe5 $1 $11 {and White stays safe.} Qxe5 33. Bxd4) 32... Rce8 {[%cal Bc8e8,Be8e7,Be7a7][%mdl 32]} 33. Kh1 {[#]} ({Don't go for} 33. Bxd4 $2 Nef3+ $1 {[%mdl 512]} 34. Kh1 Rxe2 $19) (33. Qd1 $17 d3 34. Rf1) 33... d3 $1 34. Qd1 (34. Qf1 {was worth a try.} Ne4 35. Bg1) 34... Ne4 35. Ba7 Re7 36. Rf1 {[#] Bxe4 is the strong threat.} Nxg3+ {[%mdl 512]} 37. hxg3 {Strongly threatening Bc5.} Rxa7 {Weighted Error Value: White=0.56/Black=0.29 (precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.5"]
[White "Hrbek, Stepan"]
[Black "Lim, Zhuo Ren"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "2179"]
[BlackElo "2311"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,102,28,24,38,31,26,31,48,0,5,-35,0,0,0,0,0,0,0,0,0,0,0,0,0,-21,-20,-78,-83,-85,-50,-80,0,-80,-76,-117,-133,-156,-155,-138,-135,-158,-154,-214,-187,-187,-144,-135,-158,-150,-140,-152,-145,-232,-232,-212,-215,-263,-237,-228,-250,-242,-249,-240,-247,-241,-241,-267,-236,-233,-206,-250,-220,-217,0,-254,-252,-268,-268,-299,-354,-353,-322,-467,-491,-470,-483,-467,-448]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. O-O Bd7 5. Re1 Nf6 6. c3 a6 7. Bf1 Bg4 8. d4 cxd4 9. cxd4 g6 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} 10. Nc3 Bg7 11. Be3 {[#]} Nd7 $146 {White is slightly better.} ({Predecessor:} 11... d5 12. e5 Ne4 13. Ne2 f6 14. h3 Bxf3 15. gxf3 Ng5 16. Bg2 e6 17. f4 Nf7 {1-0 (31) Delchev,A (2643)-Meins,G (2448) Bad Wiessee 2013}) 12. d5 (12. Rc1 $14) 12... Nce5 $11 {[%cal Bc6e5,Be5c4,Bc4b2][%mdl 32]} 13. h3 Bxf3 14. gxf3 Rc8 $1 15. f4 Nc4 16. Bd4 Nxb2 17. Qd2 Bxd4 18. Qxd4 O-O 19. Rab1 Qc7 20. Rec1 Nc4 21. a4 {[#]} (21. Nd1 $1 $11 b5 22. Bxc4 bxc4 23. Ne3 (23. Rb4 Qc5 $15)) 21... Na5 $1 $17 22. Ne2 Qb8 23. Nc3 Qc7 24. Ne2 $1 Qd8 25. Qb4 (25. Rc3 $142) 25... Rxc1 26. Rxc1 {[#]} Qb6 $1 $36 {[%mdl 2048] Black is on the roll.} 27. Qe1 Nb3 28. Rb1 Qa5 {Black is more active.} 29. Qd1 (29. Qxa5 $17 Nxa5 30. Nd4) 29... Nbc5 30. Qd4 Qxa4 (30... Nxa4 $19 31. Rxb7 Nac5) 31. Qxa4 Nxa4 32. Rxb7 Nac5 {[%csl LRb7,LRe4] Pair of Knights!} 33. Ra7 Rb8 34. Nd4 (34. Ng3 $17) 34... Rb4 $19 35. Nc6 Rxe4 36. Bxa6 Nf6 ({Avoid the trap} 36... Rxf4 $2 37. Nxe7+ Kg7 38. Bf1 $17) 37. Bf1 Nxd5 {White must now prevent ...Re1.} 38. Bg2 Re1+ ({And not} 38... Nxf4 39. Bxe4 Nxe4 40. Nxe7+ Kg7 41. h4 $11) 39. Kh2 Nxf4 {And now ...Kf8 would win.} 40. Nxe7+ Kf8 41. Nc8 Nxg2 42. Kxg2 {[%mdl 4096] Endgame KRN-KRN} Re6 43. f3 Ke8 44. Nb6 Kf8 45. Nc8 $1 h5 {[%cal Bh7h5,Bh5h4][%mdl 32]} 46. Kg3 Nb3 {To avoid Ra1} 47. Ra4 d5 48. Rb4 Nc1 {[%cal Od5d4]} 49. Rb1 (49. Rb5 {is a better defense.}) 49... Ne2+ {Black is clearly winning.} 50. Kf2 h4 51. Rb4 g5 {Weighted Error Value: White=0.18 (very precise) /Black=0.14 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.6"]
[White "Nielsen, Andre"]
[Black "Mannion, Stephen R"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2232"]
[BlackElo "2267"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,57,0,0,-12,0,0,0,0,0,0,2,0,0,-5,0,0,0,0,32,27,36,-22,41,43,34,29,25,14,0,0,31,12,93,74,104,102,106,98,103,75,82,0,93,0,76,0,70,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 {[%cal Bc2c3,Bc3d4,Bd4d5][%mdl 32]} Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nbd2 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} Nxe4 8. d5 $1 {The main line 8.d5 scores better than 8.0-0.} Nxd2 9. Bxd2 {The position is equal.} Bxd2+ 10. Qxd2 ({Don't play} 10. Nxd2 Qe7+ 11. Qe2 Qxe2+ 12. Kxe2 Ne5 $15) (10. Kxd2 Ne7 $15) 10... Ne7 11. O-O-O d6 12. h4 $1 {[#]} O-O $146 ({Predecessor:} 12... Bg4 13. Qd4 Qd7 14. h5 h6 15. Rde1 Kf8 16. Nh4 Bxh5 17. g4 Qxg4 18. f4 Qd7 {0-1 (34) Mamedyarov,S (2767)-Karjakin,S (2743) Baku 2021}) 13. h5 h6 14. Rdg1 $1 c6 15. g4 $1 {g5 is the strong threat.} cxd5 16. Bb3 {[#]} (16. Bd3 $1 $14) 16... f6 (16... Bxg4 $1 $11 17. Nd4 Rc8+ 18. Bc2 Qd7) 17. Bc2 $14 ({Reject} 17. Bxd5+ Nxd5 18. Qxd5+ Rf7 $15) 17... Bd7 18. Qd3 {aiming for Qh7+.} Rc8 19. Kb1 {Hoping for Qh7+.} Rxc2 20. Qxc2 Qc8 21. Nd4 Bxg4 (21... Qc5 $11 22. Re1 Qxd4 23. Rxe7 Qxg4) 22. Qxc8 $16 Bxc8 {[#]} 23. Rc1 $1 {Prevents Nc6.} Nf5 {[#]} 24. Rxc8 $1 {[%mdl 512] White is more active.} Nxd4 25. Rc7 Rf7 26. Rc8+ {[%mdl 1024] White has strong compensation.} Rf8 27. Rc7 {Strongly threatening Rd1.} Rf7 28. Rc8+ Rf8 29. Rc7 {Weighted Error Value: White=0.13 (very precise) /Black=0.14 (very precise)} ({White should try} 29. Rxf8+ $14 Kxf8 30. Rd1) 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.7"]
[White "Neuman, Petr"]
[Black "Novotny, Michal"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2402"]
[BlackElo "2236"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,77,0,3,0,2,-20,-14,-26,-17,-13,-9,-12,0,0,0,0,29,12,52,45,43,39,54,-35,-34,-22,0,-30,-13,-39,-33,-39,-27,-46,0,1,1,8,2,0,7,8,3,7,163,162,628,592,606,602,564,565,740,664,29968,29969,29966,6179,29989,29990,29990,29991,29993,29994]} 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. O-O e5 5. d3 Ne7 6. Nbd2 O-O 7. e4 Nbc6 8. c3 a5 9. a4 {A07: Réti Opening: New York and Capablanca Systems.} d4 10. Nb3 b6 11. cxd4 {The position is equal.} exd4 12. Nbd2 Nb4 13. Nc4 {[#]} Be6 $146 ({Predecessor:} 13... Nec6 14. Bf4 Na6 15. e5 Be6 16. Ng5 Bd5 17. e6 Bxg2 18. exf7+ Rxf7 19. Kxg2 Qd5+ {½-½ (36) Batal,J (1960)-Pepermans,T (2000) FICGS email 2012}) 14. b3 $1 h6 15. Ne1 Qd7 16. Nc2 Rab8 17. Nxb4 axb4 18. Qc2 f5 19. f3 ({Better is} 19. exf5 $14 Bxf5 20. a5) 19... g5 20. Bd2 c5 (20... fxe4 {keeps more tension.} 21. fxe4 Rxf1+ 22. Rxf1 Nc6 23. e5 Nxe5 24. Bxb4 Ng4) 21. a5 (21. f4 {is interesting.} fxe4 22. Bxe4 Nd5 23. fxg5 hxg5 24. Bxg5 Nc3 25. Rxf8+ Rxf8 26. Re1) 21... bxa5 22. Rxa5 fxe4 23. fxe4 Rxf1+ 24. Bxf1 Rb5 (24... Qc7 $1 $15) 25. Ra8+ $1 $11 Kh7 26. Bg2 Ng6 27. Qd1 {[%cal Od2g5]} Rb7 28. e5 {[%cal Be4e5,Be5e6][%mdl 32]} Bd5 $1 29. Qe2 {[%cal Oh2h4]} Bxc4 $2 {[#] This costs Black the game.} (29... Bxg2 $11 {and Black stays safe.} 30. Qxg2 (30. e6 Qc6 $15) 30... Rc7) 30. dxc4 $18 Ra7 $2 (30... d3 31. Qf2 (31. Qe4 Ra7 $16) 31... Rc7) 31. e6 Qe7 32. Rxa7 Qxa7 33. Be4 {[%cal Oe6e7] [#] Strongly threatening e7!} Bf6 34. h4 {Intending hxg5 and mate.} Kg7 35. hxg5 hxg5 36. Qh5 $1 {[%csl LRg5,LRg6]} Qa1+ 37. Kg2 {White mates.} Ne5 38. Bxg5 Qb2+ 39. Kh3 {Weighted Error Value: White=0.08 (flawless) /Black=0.74} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.8"]
[White "Czerw, Dawid"]
[Black "Michalczak, Thomas"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2396"]
[BlackElo "2218"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,75,10,18,-13,-15,-23,37,11,19,20,10,10,10,23,15,6,31,0,22,-4,0,-15,-6,-12,-9,-18,-11,-43,-47,-53,-48,-47,-34,-46,-43,-34,0,-12,0,0,40,37,121,128,128,131,194,138,154,0,0,-58,-60,-47,-50,-62,-42,-43,-30,-53]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 b5 6. Bb3 Be7 7. d4 d6 8. c3 O-O 9. O-O $1 {9.0-0 is better than 9.Nbd2.} Bg4 10. d5 {C86: Closed Ruy Lopez: Worrall Attack.} Na5 11. Bc2 h6 (11... c6 $11) 12. h3 {White is slightly better.} Bd7 13. Rd1 Qc8 14. Nbd2 c6 15. dxc6 Qxc6 16. Nf1 Rfe8 17. Ne3 Bf8 {[#]} 18. Nd5 $146 ({Predecessor:} 18. Qd3 Qc7 19. Nh2 Nc4 20. Nhg4 Nxg4 21. Nxg4 d5 22. Ne3 d4 23. Nd5 Qc6 24. cxd4 {½-½ (95) Polgar,J (2685)-Kovalev,V (2554) Dubai 2014}) 18... Nxd5 19. exd5 Qc4 20. Qxc4 Nxc4 21. a4 Rec8 22. Ne1 (22. a5 $5 {[%cal Rb2b3]}) 22... bxa4 23. Bxa4 Bxa4 24. Rxa4 Rab8 25. b4 $1 Nb6 26. Ra3 Rb7 27. Kf1 Ra8 28. Nc2 Nc4 29. Ra2 a5 (29... h5 $14) 30. Ne3 $16 Nxe3+ 31. Bxe3 Rb5 (31... a4 $16 {keeps fighting.}) 32. Ke2 ({White should play} 32. Rda1 $18) 32... Be7 33. Rb1 $2 {[#] White is more active.} (33. Rda1 $16) 33... Rab8 $11 34. Rab2 (34. Ra4 $11) 34... Bg5 $1 $15 (34... Rxd5 $2 35. c4 $18) 35. Bxg5 hxg5 36. c4 Rxb4 37. Rxb4 axb4 ({Resist} 37... Rxb4 38. Rxb4 axb4 39. Kd3 $14) 38. Kd3 {Weighted Error Value: White=0.18 (very precise) /Black=0.15 (very precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.9"]
[White "Fus, Jakub"]
[Black "Jordanov, Mihail"]
[Result "1/2-1/2"]
[ECO "E12"]
[WhiteElo "2384"]
[BlackElo "2193"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,90,0,-14,25,0,15,8,27,22,55,16,14,25,30,25,25,27,42,28,32,22,42,17,29,29,52,15,13,23,24,0,97,98,106,119,106,116,113,111,157,154,145,146,153,148,172,168,160,123,150,105,125,87,89,97,96,116,85,109,97,24,29,0,10,11,8,0,0,-21,-22,-29,-30,-35,-30,-28,-27,-38,-24,-23,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Bf4 Bb4+ 5. Nbd2 Bb7 6. e3 O-O 7. Bd3 d5 {E12: Queen's Indian: Unusual White 4th moves, 4 a3, 4 Nc3 Bb7 5 a3 and 4 Nc3 Bb7 .} 8. O-O Bd6 9. Bg5 Be7 {The position is equal.} 10. Rc1 h6 11. Bh4 Nbd7 12. cxd5 Nxd5 13. Bxe7 Nxe7 {[#]} 14. Ne4 $146 ({Predecessor:} 14. Bb5 c6 15. Ba4 Rc8 16. b4 a5 17. Ne4 Ba6 18. Re1 axb4 19. Qd2 c5 20. Red1 {1-0 (42) Lytchak,A (2375)-Auer,M (2330) Germany 1999}) 14... Nd5 15. Qa4 Qe7 16. Bb5 Nb8 {[%cal Od5e3]} 17. Nc3 Rc8 18. Nxd5 Bxd5 19. Bd3 c5 20. dxc5 bxc5 21. Be4 Qb7 {[#]} (21... Nd7 $11 {remains equal.}) 22. Rxc5 $1 $16 {Strongly threatening Bxd5.} Bxe4 (22... Nd7 23. Rxc8+) 23. Rxc8+ {[%mdl 64] Overworked Piece} Qxc8 24. Qxe4 Nd7 25. Nd4 Rb8 ({Better is} 25... Nb6) 26. Nc6 {Ne7+ is the strong threat.} Nf6 27. Qc2 {aiming for Ne7+. White is much more active.} Qc7 {Inhibits Ne7+.} 28. Rc1 Rb7 29. b4 Qb6 30. Qc5 Qa6 31. Qc4 (31. Ne5 $142) 31... Qa3 32. Rb1 Nd5 33. Qb3 Qxb3 34. Rxb3 {[%mdl 4096] Endgame KRN-KRN} Rb6 35. b5 ({Of course not} 35. Nxa7 Ra6 36. Nb5 Rxa2 $11) 35... a6 {[#]} 36. Nd4 (36. a4 $1 $16) 36... e5 $11 37. e4 Nc7 38. Nf3 Rxb5 39. Kf1 f6 40. Ke2 Ra5 41. Rb8+ Kh7 42. Rb2 Nb5 43. Kd3 Ra3+ 44. Kc4 Ra4+ 45. Kd3 Ra3+ {White really could win this.  Weighted Error Value: White=0.14 (very precise) /Black=0.11 (very precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.10"]
[White "Bochnicka, Vladimir"]
[Black "Kozak, Antoni"]
[Result "0-1"]
[ECO "A10"]
[WhiteElo "2222"]
[BlackElo "2356"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,72,-10,-15,-22,-20,0,-19,4,0,25,0,23,26,26,20,130,0,20,16,11,12,16,8,61,56,56,53,55,63,360,-99,-94,-118,-127,-101,-122,-117,-105,-146,-102,-194,-192,-212,-223,-239,-177,-229,-151,-314,-287,-29976,-29976,-29993,-29994,-29995,-70]} 1. c4 d6 2. Nc3 e5 3. g3 g6 4. Bg2 Bg7 5. d3 f5 6. e4 Nc6 7. Nge2 Nf6 8. O-O O-O 9. exf5 Bxf5 10. h3 Qd7 {A26: English Opening vs King's Indian with ...Nc6 and d3.} 11. Kh2 {[#]} Rad8 $146 ({Predecessor:} 11... Be6 12. Nd5 Nh5 13. Qa4 Rf7 14. Be3 a6 15. Rac1 Kh8 16. b4 Raf8 17. Rce1 h6 18. Ng1 {1-0 (52) Kokarev,D (2609)-Setyaki,A (2421) Yogyakarta 2019}) 12. Be3 Be6 {The position is equal.} 13. f4 h6 14. b3 Kh7 15. Qd2 Ne7 16. Rae1 Bf7 (16... b6 $11 {keeps the balance.}) 17. Bg1 (17. Bxa7 $6 b6 $11) (17. Bxb7 $6 c6 18. Ba6 (18. fxe5 dxe5 19. Ba6 Be6 $11) 18... Be6 $11) (17. fxe5 $1 $16 dxe5 18. Rxf6 $1 (18. Bxb7 c6 $11) (18. Bxa7 b6 $11) 18... Bxf6 19. Bxh6) 17... exf4 18. Nxf4 g5 19. Nfe2 {[%cal Bf4e2,Be2d4,Bd4f5][%mdl 32]} d5 20. Bc5 b6 (20... dxc4 $11 21. Bxb7 (21. Nd4 Nfg8 $11) 21... c6) 21. Bxe7 $14 Qxe7 22. Nd4 Qd7 23. Nf5 {Threatens to win with Re7.} dxc4 $2 {[%mdl 8192]} (23... Be6 $14 24. Nxg7 Kxg7) 24. Ne4 $2 {Pair of Knights!} (24. Nxg7 $18 Kxg7 25. Rxf6 Kxf6 26. Qb2) 24... Bg6 {[%cal Bf7g6,Bg6f5,Bf5d7][%mdl 32]} (24... Qxd3 25. Nxg5+ hxg5 26. Qxg5 $16) (24... Nxe4 {feels hotter.} 25. Bxe4 Bg6 26. Nxg7 Rxf1 27. Bxg6+ Kxg7 28. Rxf1 Kxg6 29. Qf2 cxd3 30. Qf6+ Kh7) 25. Nxg5+ hxg5 26. Re7 {[#]} Bxf5 $1 27. Rxd7 Bxd7 {The board is on fire.} (27... Nxd7 $2 28. Rxf5 $1 Rxf5 29. Be4 $18) 28. dxc4 (28. Qxg5 $142 cxd3 29. Qh4+ Kg8 30. Qc4+ Rf7 31. Be4) 28... g4 (28... Kh6 $142 {[%cal Od7h3] aiming for ...Bxh3!} 29. Qc1 c5) 29. h4 {[#]} (29. Qc2+ $17 Kh8 30. h4) 29... Bf5 $1 $19 {[%mdl 512]} 30. Qg5 (30. Qf4 Bg6) 30... Bg6 31. c5 bxc5 32. Qxc5 (32. Rf2 $142) 32... Rd2 33. Qxa7 $2 (33. h5 $17 Bxh5 34. Qxa7) 33... Re8 {( -> ...Ree2)} 34. Kh1 $2 (34. Rf2 $19 Rd3 35. Rf4) 34... Ree2 {[%csl LRa2,LRg2] Black mates.} 35. Qxc7 Rxg2 36. Rxf6 Rh2+ {Quite a comeback for Black.  Weighted Error Value: White=0.74/Black=0.42} ({Not} 36... Be4 37. Rh6+ Kxh6 38. Qf4+ Kg6 39. Qxe4+ Kh6 40. Qf4+ Kh7 41. Qe4+ Kh6 42. Qf4+ Kh7 43. Qe4+ Kh6 $11) 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.11"]
[White "Plischki, Sebastian"]
[Black "Grutter, Tim"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2375"]
[BlackElo "2194"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,93,-6,22,0,21,16,17,15,22,20,39,37,43,25,44,40,56,27,28,30,35,25,33,26,35,31,24,21,31,13,94,35,40,40,40,31,29,21,22,22,13,18,18,25,26,0,26,26,26,26,26,26,26,26,26,26,27,27,44,0,56,41,41,41,41,-67,-67,-77,-77,-77,-67,-77,-67,-67,-44,-66,-66,-66,-23,-23,0,0,0,-7,-2,0]} 1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. e3 f5 5. g3 d6 6. Bg2 {A45: Trompowsky Attack.} Nd7 7. c4 c6 8. Nc3 Nf6 9. Nge2 {[#]} Be7 $146 ({Predecessor:} 9... Be6 10. Qd3 d5 11. cxd5 cxd5 12. Nf4 a6 13. O-O Rc8 14. Rac1 Rc6 15. Rc2 g5 16. Nxe6 fxe6 {0-1 (39) Olund,J (2350)-Savchenko,B (2564) Chess.com INT 2020}) 10. O-O O-O 11. b4 Re8 12. b5 Qc7 13. bxc6 bxc6 14. Rb1 Bd7 15. Qa4 Rab8 16. Rb3 Rb6 17. Rfb1 Reb8 18. Qa3 Bc8 {[%cal Od6d5]} 19. Nf4 Ne4 (19... d5 $11 20. c5 Rxb3 21. Rxb3 Ne4) 20. Qc1 (20. Rxb6 $16 Rxb6 21. Rxb6 (21. Bxe4 fxe4 22. Rxb6 Qxb6 $11) 21... Qxb6 22. Nxe4 (22. Bxe4 fxe4 23. Kg2 g5 $11) 22... Qb1+ 23. Bf1 fxe4 24. Qxa7) 20... Nxc3 21. Qxc3 Rxb3 22. axb3 a5 23. Nd3 Bf6 24. c5 {aiming for cxd6.} d5 25. Ra1 Ba6 26. Bf1 {[%cal Bg2f1,Bf1e2,Be2d1,Bd1c2][%mdl 32]} Bxd3 27. Qxd3 Bd8 28. Be2 Rb4 29. Ra4 Rb8 30. Bd1 Qb7 31. Bc2 Bc7 32. Kf1 h5 33. Ke2 Kf8 {[%cal Bg8f8,Bf8e7,Be7d6][%mdl 32]} 34. Kd2 (34. h4 $14 {was preferrable.}) 34... Qb5 (34... h4 $11) 35. Qxb5 (35. b4 {feels hotter.} h4 36. gxh4 axb4 37. Bb3 Ke7 38. Qxb5 Rxb5 39. h5) 35... Rxb5 $14 {[%mdl 4096] Endgame KRB-KRB} 36. Kc3 Ke7 37. Ra1 {[#]} (37. h4 $14) 37... Rxc5+ $1 $15 38. Kd2 (38. Kb2 Rb5) 38... Rb5 39. Bd1 Kd6 40. Rc1 Rb8 41. Ra1 h4 42. Ke2 Rh8 43. Rc1 {[%cal Ob3b4]} Rg8 (43... hxg3 $15 44. hxg3 Rh1) 44. b4 $11 Ra8 45. Ba4 {The position is equal.} Ra6 (45... axb4 $2 46. Rxc6+ Ke7 47. Rxc7+ $18) 46. b5 cxb5 47. Bxb5 {Weighted Error Value: White=0.11 (very precise) /Black=0.13 (very precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.12"]
[White "Melaa, Sondre"]
[Black "Van Osch, Mees"]
[Result "0-1"]
[ECO "E91"]
[WhiteElo "2169"]
[BlackElo "2364"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,64,17,0,20,-13,-16,-19,-9,-20,-32,-7,-15,-16,-19,-59,-37,-48,-32,-145,-134,-195,-187,-244,-244,-191,-82,-72,-85,-85,-70,-182,-171,-159,-170,-1027,-1017,-887,-1032,-953,-924,-1221,-844,-1161,-1160,-968,-1204,-1008,-1016]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 Na6 7. O-O e5 8. d5 Nc5 9. Qc2 a5 10. b3 Ng4 {[#] E94: King's Indian: Classical: 6 Be2 e5 7 0-0: Various Black 7th moves.} 11. Bg5 $146 ({Predecessor:} 11. h3 Nf6 12. a3 Nh5 13. Be3 f5 14. Nd2 f4 15. Bxc5 dxc5 16. Qd1 Nf6 17. Nf3 Ne8 18. Nh2 {1-0 (79) Sloniewska,A (1540)-Borys,M (1366) Warsaw 2019}) 11... f6 12. Bh4 g5 {The position is equal.} 13. Bg3 f5 14. exf5 Bxf5 15. Qd2 h6 {[%cal Bh7h6,Bh6h5,Bh5h4][%mdl 32]} 16. Rac1 Nf6 17. Qe3 Qe8 18. Ne1 {[#]} (18. h3 $15) 18... Qg6 $1 $17 19. Rd1 {[#]} (19. Nf3 $17) 19... h5 $1 $19 20. f3 (20. Bxe5 $2 Rae8 21. Nd3 (21. Nf3 $2 Ng4 $19) 21... Nxd3 22. Bxd3 Ng4 23. Bxf5 Rxf5 $19) (20. Nf3 $142 h4 21. Bxh4 (21. Bxe5 $2 Ng4 $19) 21... gxh4 22. Nxh4) 20... h4 21. Bf2 ({Of course not} 21. Bxe5 Rae8 22. Nd3 (22. f4 $2 gxf4 23. Qxf4 Rxe5 $19) 22... Nfd7 $19) 21... Bh6 (21... g4 $19 {and Black stays clearly on top.} 22. Qd2 (22. Bxh4 $2 Bh6 $19) 22... g3 23. Bxc5 gxh2+ 24. Kh1 dxc5) 22. Qd2 $17 e4 {Black is more active.} 23. Bxc5 dxc5 24. fxe4 (24. d6 $15 g4 25. f4) 24... Nxe4 $19 25. Nxe4 {[%cal Of1f5] aiming for Rxf5!} g4 26. Rxf5 $2 (26. Rf4 Bxe4 27. Rxg4 Bxd2 28. Rxg6+ Bxg6 29. Rxd2) 26... Bxd2 {Black is clearly winning.} 27. Rxf8+ Rxf8 28. Nxd2 Qe8 29. Bd3 Qe3+ 30. Kh1 h3 31. Nf1 Qf2 {[%cal Of2f1] ( -> ...Qxf1+!)} 32. Ng3 Re8 {Weighted Error Value: White=0.55/Black=0.06 (flawless)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.13"]
[White "Hrabusa, Matej"]
[Black "Stanojevic, Ilija"]
[Result "1-0"]
[ECO "A46"]
[WhiteElo "2369"]
[BlackElo "2190"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,97,50,36,65,34,52,52,56,45,51,55,54,58,46,25,62,67,76,73,126,73,72,69,211,152,177,52,36,37,139,141,178,147,145,140,127,18,28,0,0,0,0,0,244,104,110,109,106,106,98,111,104,100,287,226,210,219,218,214,205,218,220,202,288,264,367,363,456,417,1154,1116,2878,1839,29977,29978,6203,6187,29983,29982,29981,29982,29982,29983,29983,29984,29984,29984,29983,29983]} 1. d4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. c4 d6 6. O-O Nbd7 {6...Nbd7 is better than 6...Be7. E16: Queen's Indian: 4 g3 Bb7 5 Bg2 Bb4+.} 7. Re1 g6 8. Nc3 Bg7 {White is slightly better.} 9. e4 e5 10. b3 O-O 11. Bb2 Re8 12. Qc2 {[#]} a5 $146 ({Predecessor:} 12... c6 13. Rad1 Qc7 14. d5 cxd5 15. Nb5 Qb8 16. cxd5 Rc8 17. Qd2 a6 18. Na3 b5 {1-0 (43) Tica,S (2295)-Glavan,M (2006) Sv Filip i Jakov 2015}) 13. Rad1 exd4 14. Nxd4 Nc5 (14... c6 $142) 15. e5 (15. f4 $142) 15... Bxg2 $16 (15... Rxe5 16. Bxb7 Rxe1+ 17. Rxe1 $16) 16. Kxg2 Nh5 (16... Rxe5 $14 17. Nc6 Rxe1 18. Nxd8 Rxd1) 17. Nf3 Qc8 {[%cal Rd6e5]} 18. exd6 (18. Nd5 $18) 18... Nf4+ $1 $14 19. Kh1 {Active counter play!} Qh3 ({Black should try} 19... Qb7 $1 $14 20. Rxe8+ Rxe8) 20. Rg1 $1 $16 Qg4 {Prevents Ng5.} 21. Nh4 c6 {[%cal Oa8d8]} 22. f3 $1 (22. gxf4 $6 Qxh4 23. d7 Red8 $11) (22. d7 Red8 $16) 22... Qh5 {[%cal Oa8d8]} 23. d7 (23. gxf4 Qxh4 24. Rg4 (24. d7 Red8 $11) 24... Qh3 $14) (23. Ne4 $1 $16 Bxb2 24. Qxb2 Nxe4 25. fxe4 (25. gxf4 Qxh4 26. fxe4 Qxf4 $15)) 23... Red8 $11 {[%cal Oa8a7]} 24. Ne4 {Strongly threatening Bxg7.} Bxb2 25. Nxc5 ({Much weaker is} 25. gxf4 Nxe4 26. fxe4 (26. Qxb2 Qxh4 27. fxe4 Qxf4 $17) 26... Qxh4 $17) 25... Qxc5 26. Qxb2 Nh3 (26... Ne6 $11 {and Black stays safe.}) 27. Rg2 (27. Rgf1 $18) 27... Ra7 $16 28. Re2 {White wants to mate with Re8+.} ({Don't play} 28. Rgd2 $6 Raxd7 $1 29. Kg2 (29. Nxg6 $2 hxg6 30. Kg2 Rxd2+ 31. Rxd2 Rxd2+ 32. Qxd2 Ng5 $19) 29... Rxd2+ 30. Rxd2 Rxd2+ 31. Qxd2 Ng5 $11) 28... Raxd7 29. Rde1 {aiming for Re8+.} Qd4 {[#]} 30. Qxd4 $1 $40 {[%mdl 128] White is out for blood.} Rxd4 31. f4 {Inhibits Ng5.} h6 $2 (31... Nxf4 $16 32. gxf4 Rxf4) 32. Kg2 Nxf4+ 33. gxf4 Rxf4 34. Re8+ Rxe8 35. Rxe8+ $18 {[%mdl 4096] Endgame KRN-KR} Kg7 36. Nf3 b5 (36... c5 $142 37. Re7 g5) 37. c5 a4 38. Rd8 axb3 39. axb3 Rb4 (39... Re4 $142 40. Kf2 h5) 40. Nd4 Kf6 41. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} g5 42. Rd6+ Kg7 43. h5 {Kf3 would kill now.} Kh7 44. Kf3 {White mates.} f5 45. Ke3 f4+ 46. Kd3 f3 47. Rf6 g4 48. Rf7+ Kg8 49. Rf4 {Weighted Error Value: White=0.19 (very precise) /Black=0.65} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.14"]
[White "Kulhanek, Tomas"]
[Black "Bodicky, Michal"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2323"]
[BlackElo "2137"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,57,10,13,16,16,8,35,37,33,29,29,27,38,24,57,46,54,51,45,22,128,131,127,125,125,83,258,247,584,514,647,626,768,754,912,933,1802,593,552,0,1827,1794,1725,1716,29993,29994,29994,29995]} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nf6 5. c3 Bg4 6. Qb3 Qc7 7. Ne2 {B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack.} Bxe2 8. Bxe2 {[%cal Oc1f4]} Nbd7 9. O-O {White is slightly better.} e6 10. Nd2 Bd6 11. Nf3 {[#]} h6 $146 ({Predecessor:} 11... O-O 12. Bd3 h6 13. Re1 Rfe8 14. g3 a6 15. a4 Rab8 16. a5 Rbd8 17. Bd2 Nb8 {0-1 (42) Kamsky,G (2665)-Sadhwani,R (2545) Chess.com INT 2021}) 12. Bd3 g5 13. g3 O-O-O 14. Re1 Kb8 15. a4 {[%cal Ba2a4,Ba4a5,Ba5a6][%mdl 32]} Ng4 (15... g4 $11 {keeps the balance.} 16. Nh4 Ka8) 16. a5 $16 Rde8 17. a6 b6 18. Bd2 (18. Qb5 $142) 18... f5 $2 (18... h5 $16 {might work better.}) 19. c4 $18 e5 $2 (19... f4 {is more resistant.}) 20. Bxf5 dxc4 21. Qb5 Ndf6 22. Rac1 e4 {[#]} 23. Rxc4 $1 Qf7 {[#]} (23... Qe7 24. h3) 24. Qc6 $1 Qc7 {[#]} (24... Qd5 25. h3) 25. Qb5 Qf7 {[#]} 26. Rec1 $1 {[%cal Od2b4] White threatens Bb4! and mate.} exf3 (26... e3 27. fxe3) 27. Qc6 {[%csl LRd6,LRf3][%cal Oc6c8] Qc8+! would kill now.} Bc5 28. Rxc5 bxc5 29. Rxc5 {Weighted Error Value: White=0.49/Black=0.78} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.15"]
[White "Acor, Corey"]
[Black "Lacrosse, Marc"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2303"]
[BlackElo "2035"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,76,0,0,0,0,0,0,0,0,0,0,0,0,0,13,0,3,0,0,0,0,0,8,16,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,527,192,5222,5519,5393,5277,5308,5357,3241,2672,6172,5875,2546,2430,6427,12457,2558]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Bd2 Nxe4 8. Bxb4 Nxb4 9. Bxf7+ Kxf7 {[%cal Be8f7,Bf7f8,Bf8e7][%mdl 32]} 10. Qb3+ {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} Kf8 {now scores much better than the old 10...d5.} 11. Qxb4+ Qe7 $1 12. Qxe7+ {The position is equal.} Kxe7 13. O-O Kd8 14. Re1 Nf6 15. Nc3 Rf8 16. Rac1 d6 17. h3 Bd7 18. d5 {[#]} h6 $146 ({Predecessor:} 18... a5 19. Nd4 Ra6 20. g4 Rb6 21. b3 Re8 22. Rxe8+ Nxe8 23. Re1 c5 24. dxc6 bxc6 {0-1 (35) Markun,B (2251)-Gregoric,A (2029) Ljubljana 2021}) 19. Nd4 Re8 20. Rxe8+ Nxe8 21. Re1 Nf6 22. Re3 a6 23. f4 {[%cal Bf2f4,Bf4f5,Bf5e6][%mdl 32]} c5 24. Ne6+ Bxe6 25. Rxe6 $11 {[%mdl 4096] Endgame KRN-KRN} Kd7 26. g4 Rb8 {[%cal Of6d5]} (26... Nxd5 $2 {[#]} 27. Nxd5 $1 Kxe6 28. Nc7+ Kd7 29. Nxa8 $18) 27. f5 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 28. Kf2 b4 29. Ne4 Nxe4+ 30. Rxe4 {KR-KR} Re8 $2 {[%mdl 8192]} (30... b3 $11 31. a4 Re8) 31. Re6 $2 (31. Rxe8 {aiming for Rg8.} Kxe8 32. h4) 31... Rxe6 $2 (31... Rc8 32. Rg6 Ke7 33. Rxg7+ Kf6 34. Rg6+ Ke5 35. Rxh6 Kxd5) 32. fxe6+ $18 {KP-KP. White is clearly winning.} Ke7 33. h4 Kf6 34. Ke3 Ke7 35. Kd3 {[#] Strongly threatening Kc4.} Kf6 36. Kc4 Ke7 37. Kb3 Kd8 38. Ka4 {White threatens Ka5 and mate.} Ke7 {Weighted Error Value: White=0.18 (very precise) /Black=0.44} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.16"]
[White "Soucek, Petr"]
[Black "Dev, Shah"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "2117"]
[BlackElo "2243"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,57,4,3,0,0,11,19,7,12,10,10,30,10,11,19,27,24,35,12,12,0,106,103,97,120,166,158,158,162,171,165,180,14,14,19,110,113,104,85,179,187,176,94,81,21]} 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 d5 8. exd5 O-O {C47: Scotch Four Knights and Four Knights with 4 g3.} 9. O-O Bg4 10. Ne2 cxd5 {The position is equal.} 11. h3 Bh5 12. c4 Re8 13. Qc2 Bxe2 14. Bxe2 d4 {[%cal Oe8e2]} 15. a3 Bf8 {[#]} 16. Bf3 $146 ({Predecessor:} 16. Rd1 Qd7 17. Be3 c5 18. Bf3 Rab8 19. Bg5 Qe6 20. Bxf6 Qxf6 21. Re1 Bd6 22. Qa4 {0-1 (41) Thomas,T (1958)-Kusa,J (2280) Prague 2021}) 16... Rb8 17. Bf4 {[%cal Bc1f4,Bf4c7,Bc7b6,Bb6e3][%mdl 32]} a5 (17... d3 $11 18. Qc3 Bd6 19. Bxd6 Qxd6) 18. Rad1 $1 $16 {White is more active.} Bc5 19. Qf5 Bf8 (19... Qe7 $16 {might work better.}) 20. Qxa5 $18 Rxb2 21. Bxc7 Qd7 22. Bb6 $1 {This bishop pair is nice.} d3 23. c5 $2 ({White should play} 23. Be3 $18) 23... Qd4 $1 $11 24. Rb1 Rc2 (24... Rxb1 $1 $11 {remains equal.} 25. Rxb1 Nd5) 25. c6 $1 $16 Qc4 26. Rfd1 {To avoid d2. Strongly threatening Qb5.} Bd6 (26... Ne4 $16 {was called for.}) 27. Be3 $1 $18 Ne4 {[%cal Oe4f2] [#]} 28. Bxe4 ({White should try} 28. Qf5 $1 $18 {Hoping for Bxe4.} g6 29. Qd7 Qxc6 30. Qxc6 Rxc6 31. Rxd3) 28... Qxe4 $16 {[#]} 29. Qb5 {Weighted Error Value: White=0.17 (very precise) /Black=0.23 (precise)} (29. Rb3 $1 $16) 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.17"]
[White "Torngren, Gustav"]
[Black "Lorans, Sylvain"]
[Result "1-0"]
[ECO "A22"]
[WhiteElo "2228"]
[BlackElo "2110"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,63,5,22,17,53,50,45,46,56,39,50,43,112,113,126,119,172,160,160,166,167,157,158,154,232,217,232,213,233,206,231,219,322,306,360,112,114,0,363,354,345,368,335,330,625,628,850,815,727,394,907,906,2779,2667,1900,1746]} 1. c4 e5 2. Nc3 Nf6 3. e3 Bb4 4. Qb3 Bxc3 5. Qxc3 Nc6 6. b4 {[%cal Bb2b4,Bb4b5][%mdl 32] [#] A22: English Opening: 1...e5 2 Nc3 Nf6.} d5 $146 ({Predecessor:} 6... d6 7. Bb2 O-O 8. Nf3 Bg4 9. b5 Ne7 10. d4 e4 11. Nd2 Ng6 12. h3 Bd7 {1-0 (55) Korobov,A (2695)-Tari,A (2597) Dubai 2017}) 7. b5 $1 d4 8. Qa3 {White is slightly better.} Ne7 9. Nf3 dxe3 10. dxe3 Bg4 {[#]} (10... e4 $1 $14) 11. Bb2 $1 $16 Bxf3 12. gxf3 Ng6 (12... Qd6 $16) 13. Rd1 $18 Qe7 14. Qxe7+ Kxe7 15. Ba3+ Ke8 16. Bh3 Rd8 (16... h5 $16 17. Bb4 h4) 17. Ke2 Nf8 18. Rxd8+ Kxd8 19. Rg1 Ke8 20. Bb2 ({Don't do} 20. Rxg7 $6 Ng6) 20... Ng6 (20... Ke7 {might work better.} 21. Bxe5 (21. Rxg7 Ng6 $16) 21... Ne6) 21. Rd1 b6 22. Bf5 $2 (22. Rd3 $18 {has better winning chances.}) 22... Ne7 $16 23. Bh3 {White is much more active. Black has bad knights. A strong pair of Bishops.} (23. Bc2 $16 Nd7 24. Rg1) 23... Ng6 $18 24. Rd3 Ke7 25. Ba3+ Ke8 26. Bb4 {[#] Threatens to win with Ra3.} e4 $2 (26... Nf8 27. Ra3 Ne6 28. Rxa7 Kd7) 27. fxe4 Ne5 28. Ra3 c5 29. Rxa7 Rf8 $2 (29... cxb4 30. Ra8+ Ke7 31. Rxh8 Nxe4 32. Rxh7 g6) 30. Bc3 {White is clearly winning.} Neg4 31. Bxg4 Nxg4 32. Bxg7 {Weighted Error Value: White=0.32/Black=0.46} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.18"]
[White "Sorm, Daniel"]
[Black "Mizicka, Matus"]
[Result "1-0"]
[ECO "E71"]
[WhiteElo "2348"]
[BlackElo "1818"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,117,52,27,35,17,18,14,29,8,33,-12,-3,-7,-6,-26,31,8,48,31,10,0,0,0,0,17,15,13,19,14,13,11,24,7,23,0,38,21,37,35,23,-25,-10,-24,10,-22,-16,-12,-7,-87,-19,-20,0,-77,-34,-41,0,0,100,91,110,57,65,55,95,109,82,62,98,49,53,50,242,175,307,292,654,379,372,143,108,98,342,372,439,373,925,929,885,913,912,857,1482,1047,29970,29970,4770,1832,1814,1722,1577,1590,29973,29974,29973,29972,12832,11272,29987,29988]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 Nbd7 6. Bg5 c6 {E71: King's Indian: 4 e4 d6 5 h3.} 7. Qd2 O-O 8. Bd3 e5 {The position is equal.} 9. d5 Qc7 {[#]} 10. g4 $146 (10. Nge2 $14 {is superior.}) ({Predecessor:} 10. Nge2 a6 11. a4 Nc5 12. Bc2 a5 13. g4 Ne8 14. Ng3 Na6 15. Rd1 Nb4 16. Bb1 {1-0 (30) Lehmann,H (2175)-Mecklenburg,R Germany 1997}) 10... Nc5 11. Bc2 cxd5 12. cxd5 a6 (12... a5 $1 $11) 13. Nge2 $14 b5 14. a3 Rb8 15. b4 Ncd7 16. f3 Nb6 17. Bd3 Bd7 18. Kf2 Nc4 19. Bxc4 bxc4 20. Rab1 Rb7 21. Rb2 Rfb8 22. Rhb1 Be8 23. Be3 Nd7 24. a4 {[%cal Ba3a4,Ba4a5][%mdl 32]} Bf6 25. g5 (25. Kg2 $142) 25... Bd8 $11 26. Kg2 Nb6 (26... f5 {is interesting.} 27. f4 exf4 28. Nxf4 Ne5 29. Ne6 Qd7) 27. a5 Na4 28. Nxa4 Bxa4 29. Rc1 (29. f4 $11) 29... Bb5 {This bishop pair is nice.} (29... Qc8 $17 {Strongly threatening ...Bd7.} 30. Rcb1 Bd7) 30. h4 Qc8 31. Qe1 (31. Rbc2 $11) 31... Ba4 ({Black should play} 31... Be8 $17) 32. Bd2 $15 Bb5 (32... f6 $15 {was preferrable.}) 33. Qg3 Be7 {[#]} (33... f5 $11 {keeps the balance.}) 34. Bc3 $1 $16 Bf8 35. h5 {White is more active.} (35. f4 $16) 35... Bg7 $14 36. Rh1 Re7 37. Qh4 {And now hxg6 would win.} Bh8 38. Rbb1 Qd7 39. Rh3 (39. Bd2 $16) 39... Qa7 40. f4 exf4 $2 ({Black should try} 40... Bd7 $14 41. Rf3 exf4 42. hxg6 fxg6) 41. Bxh8 $18 ({Inferior is} 41. Qxf4 Be5 42. Bxe5 Rxe5 $11) 41... Kxh8 (41... Rxe4 {might work better.} 42. Nxf4 Bd7) 42. Qxf4 {Qf6+ would kill now.} f5 $2 (42... Kg8 43. h6 f6) 43. gxf6 g5 44. Qe3 $40 {[%mdl 128] White has strong attack.} (44. Qxd6 $18 Rxe4 45. Nc3) 44... Qxe3 $16 45. Rxe3 Re5 (45... Rf7 $16 {was called for.}) 46. Nd4 $18 Bd7 47. Nf3 h6 $2 (47... Ree8 48. Nxg5 Rf8) 48. Nxe5 dxe5 {[%mdl 4096] Endgame KRR-KRB} 49. Rc3 Rc8 50. Rf1 Bg4 51. f7 Kg7 {[#]} 52. Rxc4 $1 {[%mdl 512]} Rf8 (52... Rd8 53. Rc6) 53. Rc6 Bxh5 54. Re6 Be2 55. Rf2 Bd3 56. Rxe5 Rxf7 57. Rxf7+ Kxf7 58. d6 {Intending d7 and mate.} Bb5 {[#]} 59. Rxb5 $1 {Weighted Error Value: White=0.29 (precise) /Black=0.66} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.19"]
[White "Urkedal, Frode Olav Olsen"]
[Black "Zysko, Jan"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "2553"]
[BlackElo "2092"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,83,22,22,23,21,28,10,43,17,33,18,29,25,35,18,18,23,45,32,39,14,7,16,12,6,29,26,25,9,15,13,9,-1,21,28,36,42,41,21,20,7,12,16,15,13,19,9,40,13,14,13,33,34,45,28,129,0,37,54,63,50,54,47,89,48,317,284,266,272,263,270,398,398,2265,2034]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. Nbd2 Nbd7 6. b3 Be7 {D30: Queen's Gambit Declined: Systems without Nc3.} 7. Bb2 O-O 8. Bd3 dxc4 {The position is equal.} 9. Nxc4 c5 10. O-O b6 11. Qe2 Bb7 12. Rac1 Rc8 {[%cal Ba8c8,Bc8c7,Bc7d7][%mdl 32]} 13. Rfd1 {[#]} Rc7 $146 ({Predecessor:} 13... Bxf3 14. Qxf3 cxd4 15. exd4 Nd5 16. g3 a5 17. a3 Rc7 18. h4 N7f6 19. Ne5 Bd6 {½-½ (84) Tleptsok,R (2524)-Mannanov,R (2399) ICCF email 2018}) 14. dxc5 Bxc5 15. Nce5 Nxe5 16. Bxe5 {[%cal Od3h7] And now Bxh7+! would win.} Rd7 17. Ng5 {Bxf6 is the strong threat.} g6 $1 ({Much less strong is} 17... h6 18. Bxf6 gxf6 19. Nh7 $16) 18. Ba1 Be7 19. Bc4 {[%cal Og5e6] Black must now prevent Nxe6!} Rxd1+ 20. Rxd1 Qc8 21. Nf3 Qc6 22. Qb2 Rd8 23. Rxd8+ Bxd8 24. Bf1 Qd5 25. Be2 Be7 26. h3 h5 27. Ne1 Qa5 28. Kf1 Qd5 29. a4 Qd6 30. Kg1 Qb4 31. Nd3 Qe4 {[%csl Gb7][%cal Re4g2]} 32. Nf4 {Strongly threatening Bf3.} Qb4 {[#]} (32... Qf5 $11) 33. Nd3 (33. Qe5 $1 $16 {[%cal Re5b8] aiming for Qb8+.} Be4 34. Bf1 (34. Qb8+ Kg7 $16)) 33... Qe4 $14 {[%csl Gb7][%cal Re4g2]} 34. Bf1 Qd5 35. b4 {[%cal Bb3b4,Bb4b5][%mdl 32]} Kf8 36. f3 Bc6 (36... Qc6 $14 {is more appropriate.}) 37. Qc2 ({White should play} 37. e4 $16 Qd8 38. b5) 37... Nd7 $2 {[%mdl 8192] This move loses the game for Black.} (37... Bb7 $14) 38. e4 {[%cal Be3e4,Be4e5][%mdl 32]} Qd6 {[#]} 39. e5 $1 Qc7 40. b5 Bc5+ (40... Nc5 {keeps fighting.} 41. bxc6 Qxc6 42. Nxc5 Bxc5+ 43. Kh1 Qd5) 41. Nxc5 $18 Bd5 $2 {[#]} (41... Nxc5 42. bxc6 Qxc6) 42. Nxe6+ $1 {Weighted Error Value: White=0.11 (very precise) /Black=0.30} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.20"]
[White "Janous, Marek"]
[Black "Unneland, Mathias"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "2078"]
[BlackElo "2262"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,72,11,-18,-27,-20,41,34,58,17,18,17,23,20,19,11,16,-81,-74,-79,-79,-81,-75,-95,-61,-62,-60,-56,-63,-74,-68,-79,-38,-116,-108,-91,-30,-89,-89,-133,-87,-93,-93,-375,-370,-351,-383,-411,-395,-469,-460,-445,-445,-12836,-8559,-4794,-1216]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 {[%cal Bg8f6,Bf6d5,Bd5b6][%mdl 32]} 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8. c4 Ba6 9. Nd2 O-O-O 10. Qe4 Nb6 {C45: Scotch Game.} 11. b3 Re8 (11... d6 $11) 12. Bb2 $14 f6 {[%cal Rf6e5] White is slightly better.} 13. f4 (13. Be2 $14 {should be considered.}) 13... fxe5 $11 14. fxe5 g6 15. O-O-O Bg7 {[%cal Rg7e5] [#]} 16. Nf3 $146 ({Predecessor:} 16. Kb1 Bb7 17. Bd3 c5 18. Qe2 Qg5 19. Be4 Bxe4+ 20. Qxe4 Rhf8 21. Rhe1 Rf2 22. Re2 Rxe2 23. Qxe2 {½-½ (34) Zhang,J (2345)-Kovanova,B (2348) Novokuznetsk 2008}) 16... c5 17. Bd3 (17. Qg4 $11) 17... Bb7 $17 18. Qe1 Bxf3 19. gxf3 Bxe5 20. Be4 Qg5+ 21. Kb1 ({Don't blunder} 21. Qd2 $2 Bf4 22. Bxh8 Bxd2+ 23. Rxd2 Rxh8 $19) 21... Bxb2 22. Kxb2 c6 ({But not} 22... d5 23. cxd5 Rhf8 24. Qd2 Qxd2+ 25. Rxd2 $11) 23. Qa5 Kb8 24. Kb1 Re6 (24... Re5 $17 25. Rd6 Qe7) 25. Rc1 (25. h4 $15 Qe5 26. Bd3) 25... Qe7 26. Rhd1 Rf8 (26... Re5 $17 27. Rc2 Qe6) 27. a4 (27. Rd3 $1 $11 {remains equal.}) 27... Re5 28. Rc2 ({Better is} 28. Rd2) 28... g5 ({Black should try} 28... Rf6 29. Rcd2 d5) 29. h3 h5 {[%cal Og5g4,Bh7h5,Bh5g4,Bg4f3,Bf3f2][%mdl 32] ...g4! is the strong threat.} 30. Qc3 $2 {[%mdl 8192] Loses the game.} (30. Rcd2 $17) 30... g4 $19 31. hxg4 hxg4 32. a5 {[#]} gxf3 $1 33. axb6 {[%cal Od1d7] Threatens to win with Rxd7!} (33. Bd3 Nc8) 33... Rxe4 {Black is clearly winning.} 34. Qa5 d6 {Hoping for ...f2.} 35. Rxd6 (35. bxa7+ $142 Qxa7 36. Qxa7+ Kxa7 37. Kb2) 35... Re1+ 36. Ka2 f2 {Weighted Error Value: White=0.68/Black=0.13 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.21"]
[White "Bomans, Arno"]
[Black "Yakimenko, Alexander A."]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "2246"]
[BlackElo "2055"]
[Annotator "TA"]
[PlyCount "147"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,147,20,56,52,62,21,21,26,20,20,18,22,32,18,28,26,27,0,0,0,1,-1,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-7,-7,-7,-7,-52,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,62,0,0,0,0,0,0,0,0,0,49,49,49,49,49,49,49,35,96,74,96,49,49,49,49,49,49,49,49,49,56,56,56,49,56,56,56,56,56,56,56,56,56,56,56,49,115,49,49,49,49,49,49,49,50,55,56,0,49,20,20,0,93,20,20,20,20,20,20,12,24,0]} 1. Nf3 e6 2. c4 f5 3. g3 Nf6 4. Bg2 b6 5. O-O Bb7 6. d4 {[%cal Bd2d4,Bd4d5][%mdl 32]} Be7 7. d5 O-O 8. Nc3 Na6 9. Nd4 {[%cal Od5d6] [#] Black must now prevent d6! A84: Dutch Defence: 2 c4 Miscellaneous.} Qc8 10. Qc2 (10. Bf4 $14 {might be stronger.}) 10... Nb4 $11 {[%csl LRc2,LRd5] [#]} 11. Qb3 $146 {The position is equal.} ({Predecessor:} 11. Qd1 c5 12. Nc2 Nxc2 13. Qxc2 exd5 14. cxd5 d6 15. Bg5 Qd7 16. Rad1 Ng4 17. Bf4 {½-½ (29) Skatchkov,P (2491)-Galiev,A (2235) Uljanovsk 2009}) 11... c5 12. Nc2 exd5 13. Nxb4 cxb4 14. Nxd5 Nxd5 15. cxd5 {[#] Strongly threatening d6+.} Bc5 16. Bf4 d6 17. Bf3 Qd8 18. h4 Qd7 19. Qd1 Rae8 20. Qd2 a5 21. h5 h6 22. Kg2 Qf7 23. Rac1 Qf6 24. Rfd1 Ba6 25. e3 Re7 26. Rh1 Rfe8 27. Rh4 Kh8 28. Rch1 Bb5 29. Rg1 a4 30. Rhh1 (30. Be2 $11 Bxe2 31. Qxe2) 30... a3 (30... Bc4 $15) 31. b3 Ba6 32. Rc1 Bb5 33. Rhg1 Ba6 34. Kh1 Bb5 35. Rgd1 Ba6 36. Rc2 Bb5 37. Kg2 Ba6 38. Qc1 Bb5 (38... Kg8 $11) 39. Rdd2 (39. Qa1 $1 $14) 39... Ba6 40. Qh1 Bb5 41. Rd1 Ba6 42. Qh3 Bb5 43. Qh4 {And now Qxf6 would win.} Qxh4 (43... Qf7 $1 $11) 44. gxh4 $14 Rd8 45. Rcc1 Ba6 46. Rd2 Bb5 47. Bd1 Ba6 (47... Be8 $14) 48. Bc2 Rf7 49. Kf3 (49. Bd3 $16 Bc8 50. Bb5) 49... Bb5 50. Rg1 Rf6 51. Bd1 Rg8 52. Rg3 Be8 53. Kg2 Bb5 54. Bf3 Rgf8 55. Rd1 Kh7 56. Kh2 R6f7 57. Rg6 Rd8 58. Rd2 Kh8 59. Bd1 Kh7 60. Bc2 Kh8 61. Kg2 Ba6 (61... Be8 $14) 62. Kf3 (62. Bd3 $16 Bb7 63. Bc4) 62... Bb5 $1 63. Bd1 Be8 64. Rg3 Re7 65. Kg2 Bb5 66. Kh2 Rf7 67. Rg6 (67. Be2 $14 Be8 68. Rd1) 67... Re7 (67... Kh7 $1 $11) 68. Kg2 Rf7 69. Bc2 (69. Be2 $11 Be8 70. Kh1) 69... Ba6 $16 70. Rg3 ({White should play} 70. Bd3 $16 Bb7 71. Bc4) 70... Bb5 $11 71. Rf3 Rf6 72. Bd1 Be8 73. Rg3 Bb5 74. Bc2 {Weighted Error Value: White=0.05 (flawless) /Black=0.07 (flawless)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.22"]
[White "Cholleti Sahajasri"]
[Black "Gajdos, Daniel"]
[Result "1-0"]
[ECO "D41"]
[WhiteElo "2235"]
[BlackElo "2076"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,53,4,13,20,27,12,14,9,43,37,163,88,191,197,195,200,197,200,415,182,753,518,516,501,506,485,616,575,768,762,768,800,986,931]} 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 c5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 cxd4 8. cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 O-O 11. Bc4 Nd7 12. O-O {D41: Queen's Gambit Declined: Semi-Tarrasch with 5 cxd5.} b6 13. Rad1 Bb7 14. Bd3 {[#] The position is equal.} e5 $146 ({Predecessor:} 14... Rc8 15. Rfe1 Qf6 16. e5 Qe7 17. Ng5 h6 18. Ne4 Bxe4 19. Bxe4 Rfd8 20. f4 g6 21. Kh1 Nf8 22. Rc1 Qa3 23. Rxc8 Rxc8 {½-½ (23) Hracek,Z (2606)-Macieja,B (2618) Novi Sad 2009}) 15. d5 f5 (15... Nc5 $14) 16. exf5 (16. Ng5 $18) 16... Nc5 (16... Bxd5 $16 17. Be2 Nf6) 17. Nxe5 $18 {[%cal Od5d6] Strongly threatening d6!} Qd6 18. Rfe1 Rae8 19. f4 b5 $2 (19... Nxd3 {might work better.} 20. Qxd3 Rc8) 20. Qe3 (20. Bxb5 $142 Re7 21. Qb4) 20... Qxd5 $2 {[#]} (20... Nxd3 21. Qxd3 a6) 21. Bc4 $1 {[%mdl 512] White is clearly winning.} Qxc4 22. Nxc4 Rxe3 23. Nxe3 a5 24. Nd5 b4 25. Re5 {[#] And now Ne7+ would win.} Bxd5 26. Rdxd5 Nb7 27. Rd7 {Black did not feel at home in the position after the opening.  Weighted Error Value: White=0.53/Black=0.70} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.23"]
[White "Matras, Ondrej"]
[Black "Llopis de Aysa, Manuel"]
[Result "1-0"]
[ECO "A41"]
[WhiteElo "2223"]
[BlackElo "2035"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,51,47,52,43,33,28,3,4,2,62,53,63,42,55,52,63,0,20,15,50,-32,-25,-19,0,-62,-70,-50,-46,-50,-58,-54,66,85,240,235,236,225,302,261,258,265,327,324]} 1. d4 d6 2. e4 g6 3. c4 Bg7 4. Nc3 e5 5. d5 a5 6. Bd3 Na6 {A42: Modern Defence: Averbakh Variation.} 7. Be3 Bd7 8. Qd2 f5 {[#] The position is equal.} 9. f3 $146 ({Predecessor:} 9. exf5 gxf5 10. f3 Nc5 11. Nge2 Nxd3+ 12. Qxd3 Qh4+ 13. Bf2 Qh6 14. O-O Nf6 15. Nb5 {0-1 (41) Molina Mansilla,R (2319)-Vassallo Barroche,M (2391) Cala Galdana 1999}) 9... Nf6 ({Black should play} 9... Nb4 $11) 10. exf5 $14 gxf5 11. Nge2 O-O 12. O-O-O a4 {[%cal Oa4a3]} 13. Bh6 {White is more active.} (13. Bb1 $14) 13... Nc5 14. Bc2 Nh5 15. g4 (15. Bg5 $14 Qe8 16. Rhg1) 15... fxg4 $15 16. fxg4 Nf4 17. g5 ({White should try} 17. Bxg7 $11 Nxe2+ 18. Nxe2 Kxg7 19. Rhg1) 17... Bxh6 18. gxh6 {[#] Threatens to win with Nxf4.} Qh4 19. Rhg1+ {[%cal Bh1g1,Bg1g7,Bg7c7][%mdl 32]} Kh8 20. Nxf4 Qxf4 (20... Rxf4 $15 21. Rg7 Bf5 22. Bxf5 (22. Rxc7 Bxc2 23. Qxc2 Qxh6 $17) 22... Rxf5 23. Rxc7 Rf2) 21. Rg7 Qxd2+ $2 {Black cannot hold the game after this.} (21... Bf5 $16) 22. Rxd2 $18 {The board is on fire.} Bf5 (22... Rf1+ $2 23. Rd1 Raf8 24. Ne4 (24. Bxh7 Rxd1+ 25. Nxd1 Rf4 $11) (24. Rxh7+ Kg8 $16)) 23. Rxc7 Bxc2 24. Kxc2 {aiming for Nb5. White has a decisive advantage.} Rf6 25. Nb5 {[%cal Ob5d6] Strongly threatening Nxd6!} Rxh6 {[#]} 26. Nxd6 $1 {[%mdl 512] Weighted Error Value: White=0.17 (very precise) /Black=0.37} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.24"]
[White "Kukucka, Matej"]
[Black "Babula, Vlastimil"]
[Result "1/2-1/2"]
[ECO "E76"]
[WhiteElo "2104"]
[BlackElo "2561"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,61,0,-12,-18,-20,-12,-9,-29,0,0,37,0,0,2,50,70,323,110,445,312,259,144,158,97,123,129,115,-4,-6,-8,395,390,560,555,1278,1271,1652,1706,1654,1608,1504,1446,1476,0,0,0,1206,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. dxc5 Qa5 7. Bd3 Nfd7 8. Bd2 Nxc5 9. Bc2 {E76: King's Indian: Four Pawns Attack: Lines specific to 6 Nf3 move-order.} Nc6 10. Nd5 Qd8 11. b4 {The position is equal.} Ne6 12. Nf3 {[#]} Ned4 $146 ({Predecessor:} 12... O-O 13. Rb1 Ned4 14. Nxd4 Nxd4 15. Bc3 Bg4 16. Qd2 e5 17. Bxd4 exd4 18. f5 gxf5 {1-0 (28) Garcia Palermo,C (2465)-Yurtaev,L (2515) Manila 1992}) 13. Nxd4 (13. Bc3 {seems wilder.} Bg4 14. b5 Nb4 15. Bxb4 Nxc2+ 16. Qxc2 Bxa1 17. e5) 13... Bxd4 14. Rb1 e5 (14... O-O $11 {might be stronger.}) 15. f5 $36 {[%mdl 2048] White has the initiative.} f6 $2 {[%mdl 8192]} (15... a5 $1 $14) 16. b5 $2 (16. Rf1 $18 {has better winning chances.}) 16... Nb8 $2 {[%mdl 8192]} (16... Na5 $16 {is a better chance.}) 17. Qf3 {[#] fxg6 is the strong threat.} Nd7 18. h4 (18. Rf1 $18) 18... b6 19. Rf1 {White is much more active. Black has bad knights.} ({White should try} 19. fxg6 hxg6 20. Qg3) 19... Bb7 $16 20. fxg6 hxg6 21. Bg5 Bxd5 $11 22. exd5 O-O $2 {[%mdl 8192]} (22... e4 $1 $11 23. Qxe4+ Qe7 24. Qxe7+ Kxe7) 23. Bxg6 $18 ({Weaker is} 23. Bh6 f5 24. Qh3 e4 $18) 23... Kg7 {Inhibits Bh6+.} (23... fxg5 24. Bf7+ Kg7 25. Qh5) (23... Qe7 {was called for.}) 24. Bf5 {[#] Hoping for Qh5.} fxg5 25. Qh5 {White threatens Qg6+ and mate.} Rf7 26. Qg6+ Kf8 27. Qh6+ Ke7 28. Qe6+ ({But not} 28. Bxd7 $2 Rxf1+ 29. Kxf1 Kxd7 $19) 28... Kf8 29. Qh6+ $2 (29. Qxd6+ $18 Ke8 30. Bg6) 29... Ke7 $11 {Strongly threatening ...Qg8.} (29... Ke8 $2 30. Bg6 Nf6 31. Qg7 $18) 30. Qe6+ $2 {[%mdl 8192]} ({Avoid the trap} 30. Bxd7 $2 Rxf1+ 31. Kxf1 Kxd7 $19) (30. Qxg5+ $11 Nf6 31. Be6) 30... Kf8 $18 {[%cal Oe5e4]} 31. Qh6+ $2 {Weighted Error Value: White=0.51/Black=1.21} (31. Qxd6+ $18 Ke8 32. Bg6) 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.1"]
[White "Pijpers, Arthur"]
[Black "Mirzoev, Azer"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2485"]
[BlackElo "2420"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,57,31,38,0,24,24,25,25,33,37,54,-19,-16,-12,19,-4,18,4,11,0,0,-9,0,0,26,23,27,26,32,27,46,0,77,22,91,0,83,91]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 cxd4 8. Nxd4 Bc5 9. Qd2 Bxd4 10. Bxd4 Nxd4 11. Qxd4 Qb6 12. Qd2 {was the old line (12.Qxb6). C11: French: Classical System: 4 e5 and 4 Bg5 dxe4.} Nc5 13. O-O-O Bd7 14. Qd4 {White has an edge.} Bc6 15. h4 Nd7 16. h5 (16. Qxb6 $14 Nxb6 17. Ne2) 16... Qxd4 $11 17. Rxd4 {[#]} h6 $146 ({Predecessor:} 17... f6 18. h6 fxe5 19. hxg7 Rg8 20. fxe5 Rxg7 21. Rdh4 Nxe5 22. Rxh7 Kf7 23. Kd2 Rf8 {½-½ (29) Praczukowski,S (1972)-Safanowski,T (1870) Warsaw 2015}) 18. Rh3 Ke7 19. b4 {[%cal Bb2b4,Bb4b5][%mdl 32] And now b5 would win.} a6 20. Kb2 Nb6 21. Bd3 Rhd8 22. g4 {[%cal Bg2g4,Bg4g5,Bg5g6][%mdl 32]} a5 23. b5 Be8 24. g5 Rac8 25. a4 Bd7 26. Nd1 (26. g6 $14) 26... f5 (26... f6 $11 {remains equal.}) 27. Rg3 ({Of course not} 27. exf6+ $6 gxf6 28. gxf6+ Kxf6 $11) (27. g6 $1 $16) 27... Be8 {[#]} (27... hxg5 $11 28. Rxg5 Kf7) 28. Be2 ({White should play} 28. g6 $1 $16) 28... Bf7 {[#]} (28... hxg5 $11 29. Rxg5 Kf8) 29. g6 $1 {Weighted Error Value: White=0.25 (precise) /Black=0.28 (precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.2"]
[White "Jurcik, Marian"]
[Black "Mikes, Jan"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "2397"]
[BlackElo "2329"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,73,24,12,20,14,40,49,40,51,60,41,51,66,81,54,54,65,67,0,0,0,21,0,0,-21,20,0,0,0,0,-56,-38,-35,33,-24,-22,-107,-92,-111,-98,-102,-93,-94,-101,-120,0,0,0,0,0,0,0,0,0,0,0,-15,66,21,84,0,135,0]} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. Bf4 Bg4 7. Qb3 e5 {[#] B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack.} 8. h3 $1 {[%cal Bh2h3,Bh3g4,Bg4g5][%mdl 4] is now more promising than 8.dxe5.} exf4 (8... Na5 $5 {[%cal Ra5b3]} 9. Qc2 exf4 10. hxg4 Nxg4 $11) 9. hxg4 Qe7+ {White is slightly better.} 10. Kf1 O-O-O 11. Nd2 g6 12. Re1 Qc7 13. g5 Nh5 14. Be2 Ng7 {[#]} 15. Bg4+ $146 (15. Ngf3 $14) ({Predecessor:} 15. Ngf3 Ne6 16. Bb5 Bg7 17. Qa4 Rd6 18. Nb3 b6 19. Nc1 Nb8 20. Nd3 Kb7 21. Nb4 {1-0 (43) Shankland,S (2671)-Liang,A (2552) Saint Louis 2018}) 15... Kb8 $1 $11 16. Ngf3 h5 {[%cal Oh5g4]} 17. Bh3 Be7 18. Qb5 Ne8 (18... f6 $142) 19. Nb3 a6 20. Qd3 Rg8 21. Nc5 (21. Qd2 $11) 21... Bxc5 $15 22. dxc5 f6 (22... Qa5 $15) 23. Be6 (23. b4 $14) 23... Rg7 $11 24. b4 (24. Bh3 $11) 24... fxg5 $17 25. Nxg5 {Black must now prevent Bh3.} Qe7 $1 26. Nf3 Nc7 27. Bh3 Qf6 28. a4 {aiming for b5.} Re7 (28... d4 $17 29. cxd4 Nxd4) 29. Rxe7 $11 Nxe7 30. Nd4 $36 {[%mdl 2048] Strongly threatening b5. White has some pressure.} g5 {And now ...g4 would win.} 31. Bf5 Rf8 {[%cal Re7f5]} 32. Bd7 Rd8 33. Bf5 h4 (33... Rf8 $5 {[%cal Re7f5]} 34. Bd7 Rd8 35. Bf5 $11) 34. f3 Rf8 ({Better is} 34... Nxf5 $11 35. Qxf5 Qxf5 36. Nxf5 d4) 35. Bd7 (35. Bh3 $1 $14 {was preferrable.}) 35... Rd8 {[#]} (35... Ng6 $11 {remains equal.} 36. Qf5 Ne5 37. Qxf6 Rxf6) 36. Bg4 {White is much more active.} (36. Bh3 $1 $16) 36... Re8 {[#]} (36... Nc6 $11) 37. Bd7 {Weighted Error Value: White=0.21 (precise) /Black=0.25 (precise)} ({White should play} 37. b5 $1 $16 {[%cal Rb5b6]}) 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.3"]
[White "Lim, Zhuo Ren"]
[Black "Neuman, Petr"]
[Result "1/2-1/2"]
[ECO "D78"]
[WhiteElo "2311"]
[BlackElo "2402"]
[Annotator "TA"]
[PlyCount "26"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,26,11,9,10,10,18,7,33,0,12,-13,-4,-21,0,-31,-39]} 1. c4 {ChessBase} c6 2. Nf3 d5 3. g3 g6 4. Bg2 Bg7 5. O-O Nf6 6. d4 O-O 7. Ne5 Ne4 {7...Ng4 is becoming the main line. D78: Fianchetto Grünfeld: 6 0-0 c6.} 8. Nc3 f6 9. Nf3 {[#]} Be6 $146 {The position is equal.} ({Predecessor:} 9... Nxc3 10. bxc3 dxc4 11. Nd2 Be6 12. Rb1 Qd7 13. a4 b6 14. e4 Na6 15. Qe2 b5 16. Rd1 Nc7 17. Ba3 Rfe8 18. Nf1 {½-½ (76) Iliesco,J-Puiggros,G Mar del Plata 1944 HCL [ChessBase]}) 10. Qb3 Qb6 11. c5 Qxb3 12. axb3 Nd7 13. Nd2 Nxd2 {Weighted Error Value: White=0.14 (very precise) /Black=0.11 (very precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.4"]
[White "Kulhanek, Tomas"]
[Black "Haring, Filip"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "2323"]
[BlackElo "2398"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,88,31,25,39,35,36,26,28,20,32,0,22,22,19,16,9,7,25,22,45,44,44,50,45,10,6,-18,-28,-31,-19,-50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-5,-6,-6,0,-6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bf4 Nc6 5. c3 Nf6 6. Nd2 g6 7. Bd3 Bf5 $1 {[%mdl 4] is currently scoring better than 7...Bg7. B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack.} 8. Bxf5 gxf5 9. Ngf3 e6 {White has an edge.} 10. Ne5 Bd6 11. Nd3 {[#]} Ne4 $146 ({Predecessor:} 11... Bxf4 12. Nxf4 Qd6 13. Nd3 O-O-O 14. Nf3 Rhg8 15. g3 Ne4 16. Nfe5 Nxe5 17. Nxe5 Qc7 {½-½ (65) Nikolovski,N (2454)-Papp,P (2338) Chess.com INT 2020}) 12. Bxd6 Qxd6 13. f3 Nf6 14. Qe2 Nd7 15. g4 Ne7 16. O-O-O O-O-O 17. Kb1 h5 18. h3 Rdg8 19. Ne5 Nxe5 20. dxe5 Qb6 21. Nb3 a6 ({Better is} 21... hxg4 $15 22. fxg4 fxg4 23. hxg4 Rxh1 24. Rxh1 Nc6) 22. Nd4 $11 {The position is equal.} fxg4 23. hxg4 hxg4 24. fxg4 Ng6 25. Qe3 Qc7 {[#] aiming for ...Rxh1.} 26. Nf3 Qc4 27. Nd4 Rxh1 28. Rxh1 Rh8 29. Rxh8+ Nxh8 30. Qf3 {Inhibits Qf1+.} Kd7 31. b3 Qc7 32. Qe3 Ng6 33. Nf3 Ke8 34. Kb2 Kd7 35. a4 Ke8 36. Kc2 Kd7 37. Kb2 Kc8 38. Qa7 Kd7 39. Qe3 Ke7 40. Qg5+ Kf8 41. Qh6+ Ke8 42. Qe3 Kf8 43. Qh6+ Ke8 44. Qe3 Kf8 {Weighted Error Value: White=0.05 (flawless) /Black=0.04 (flawless)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.5"]
[White "Kozak, Antoni"]
[Black "Acor, Corey"]
[Result "1-0"]
[ECO "A52"]
[WhiteElo "2356"]
[BlackElo "2303"]
[Annotator "TA"]
[PlyCount "35"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,35,10,16,17,29,21,18,8,61,56,48,50,100,29,72,29,34,34,39,27,14,0,6,18,16,0,931,949]} 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Nc3 {A52: Budapest Gambit.} Bc5 {To avoid Be3} 7. Qg4 O-O {[%cal Od7d5]} 8. f5 {The position is equal.} Ne5 ({Better is} 8... Kh8 $11) 9. Qg3 $14 Re8 {[#]} 10. Nf3 $146 ({Predecessor:} 10. Bf4 Nbc6 11. O-O-O f6 12. Nf3 Kh8 13. Be2 a6 14. Nxe5 Nxe5 15. Qh4 c6 16. Bh5 {½-½ (40) Chojnacki,K (2377)-Kumala,A (2140) Szklarska Poreba 2021}) 10... Nbc6 {[#]} (10... d6 $14) 11. Nd5 $40 {[%mdl 128] Black needs to defend precisely.} (11. Bh6 $1 $16 {[%csl Gh6][%cal Rg3g7]} Bf8 12. Nxe5 Nxe5 13. Be2) 11... f6 (11... Kh8 $11) 12. Bf4 (12. Bh6 $1 $16 {[%csl Gh6][%cal Rg3g7]} Bf8 13. Be2) 12... Kh8 $11 {[%cal Oe5c4]} 13. O-O-O a5 14. Be2 {[%cal Bf1e2,Be2h5,Bh5f7][%mdl 32]} d6 15. Nh4 Nd4 16. Bh5 {[#] And now Be3 would win.} c6 $1 (16... Nxc4 $2 17. Rhe1 Ne5 18. Be3 $18 (18. Bxe8 Qxe8 19. Be3 Qc6 $16)) 17. Nc3 {The board is on fire.} Nxc4 $2 {[%mdl 8192]} (17... Re7 $11) 18. Bf7 {Weighted Error Value: White=0.15 (very precise) /Black=0.20 (precise)} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.6"]
[White "Van Osch, Mees"]
[Black "Vojta, Jakub"]
[Result "0-1"]
[ECO "C16"]
[WhiteElo "2364"]
[BlackElo "2289"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,92,14,0,0,-7,0,-57,-64,-100,-85,-54,-86,-68,-69,-82,-36,-93,-90,-95,-102,-92,-101,-100,-110,-109,-91,-89,-60,-60,-60,-68,-54,-54,-47,-87,-36,-40,0,0,0,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-122,-122,-261,-261,-261,-261,-261,-261,-29969,-184,-198,-198,-29972,-29973,-29971,-29972,-29989,-29990,-29995,-29985,-29991,-29992,-29992,-29992]} 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 b6 5. Bd2 Ne7 6. a3 Bxc3 {C16: French: 3 Nc3 Bb4 4 e5: Lines without ...c5.} 7. Bxc3 Ba6 8. Ne2 (8. Bxa6 $11 Nxa6 9. f4) 8... c5 $15 {Black is slightly better.} 9. b4 {[#]} cxd4 $146 ({Predecessor:} 9... Qc7 10. f4 Nf5 11. Qd2 O-O 12. bxc5 bxc5 13. dxc5 Nd7 14. Nd4 Bxf1 15. Nxf5 exf5 16. Rxf1 Nxc5 17. Qxd5 {0-1 (22) Pershin,D (2139)-Martynov,P (2278) St Petersburg 2012}) 10. Nxd4 Bxf1 11. Kxf1 O-O 12. Qd3 Nd7 (12... Nbc6 $17 13. Nxc6 Nxc6) 13. h4 ({White should try} 13. f4 $15) 13... Nxe5 $17 14. Qg3 Nc4 {Threatens to win with ...Rc8.} 15. Nxe6 {[%csl Gc3,Ge6][%cal Rg3g7] [#]} Nf5 {Pair of Knights!} 16. Nxd8 Nxg3+ 17. fxg3 {aiming for Nc6.} Raxd8 18. Bd4 Rfe8 19. Kf2 Re4 20. c3 Rde8 {Black is more active.} 21. Ra2 {Prevents Re2+.} Nd6 22. Rd1 Nf5 (22... Rg4 $17 {And now ...Ne4+ would win.} 23. Kg1 Ne4) 23. a4 $15 g5 (23... h5 {seems wilder.} 24. a5 R4e6 25. Rd3 g6 26. Rf3 Nxd4 27. cxd4 Kg7) 24. hxg5 Nxd4 25. Rxd4 Rxd4 26. cxd4 $11 {[%mdl 4096] Endgame KR-KR} Re4 27. Rc2 Rxd4 28. Rc7 a5 29. bxa5 bxa5 30. Rc5 Rxa4 {...d4 is the strong threat.} 31. Rxd5 Ra2+ 32. Kf3 a4 33. Rd8+ Kg7 34. Ra8 a3 35. Kf4 (35. g4 $11) 35... Rf2+ $17 ({Don't play} 35... Rxg2 $6 36. Rxa3 Rb2 37. Ra7 $11) 36. Ke3 {Now White is beyond hope.} (36. Ke4 $17 {was called for.}) 36... Rxg2 $19 37. Kf3 Ra2 38. Kg4 Ra1 39. Kf5 $2 (39. Kh3 $19) 39... h5 $2 (39... a2 {mates} 40. Kg4 h6 41. gxh6+ Kxh6 42. Ra6+ Kg7 43. Ra5 f6 44. Ra8 Kh7 45. Ra7+ Kh6 46. Ra6 Kg6 47. Ra5 f5+ 48. Kf4 Rf1+ 49. Ke5 a1=Q+ 50. Rxa1 Rxa1 51. Ke6 Kg5 52. Kd7 Kg4 53. Ke6 Re1+ 54. Kd7 Kxg3 55. Kd6 f4 56. Kd5 f3 57. Kc5 f2 58. Kd6 f1=Q 59. Kd5 Qd3+ 60. Kc5 Rb1 61. Kc6 Rc1+ 62. Kb6 Qb3+ 63. Ka7 Ra1#) 40. gxh6+ Kxh6 {( -> ...Kh7)} 41. Kg4 $2 (41. Ra6+ $19 Kh7 42. Kg5) 41... a2 {Black mates.} 42. Rh8+ Kg6 43. Rh2 {[#]} f5+ $1 44. Kh4 Kh6 45. Kh3 Kg5 46. Kg2 Rb1 {Weighted Error Value: White=0.45/Black=0.24 (precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.7"]
[White "Mannion, Stephen R"]
[Black "Hrabusa, Matej"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2267"]
[BlackElo "2369"]
[Annotator "TA"]
[PlyCount "182"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,182,8,0,12,12,25,16,0,0,0,0,4,0,0,0,0,0,0,0,0,0,30,0,0,-15,-8,-10,0,0,0,0,6,-35,-35,-22,0,-118,-114,-137,-156,-237,-146,-172,-134,-162,-145,-144,-144,-146,-149,-122,-87,-147,-151,-129,-133,-180,-125,-144,-145,-184,-79,-85,-51,-49,-71,-63,-61,-68,-50,-56,-34,-43,-22,-22,-25,-23,-8,-8,-6,-8,0,-54,0,-68,0,0,0,-8,0,0,0,0,0,0,0,0,0,-80,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 {[%cal Bg1f3,Bf3d4,Bd4e2,Be2f4][%mdl 32]} d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bd3 e5 7. Nde2 Be7 8. O-O Be6 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} 9. f4 $1 {The main line 9.f4 scores better than 9.Ng3.} exf4 10. Nxf4 Nc6 11. Be3 Ne5 12. Bd4 Rc8 13. Kh1 O-O 14. a4 Nfd7 {[#]} 15. Ncd5 $146 ({Predecessor:} 15. h3 h6 16. a5 Bg5 17. Ncd5 Re8 18. b4 Nxd3 19. cxd3 Ne5 20. Bxe5 dxe5 21. Nxe6 fxe6 {1-0 (36) Paravyan,D (2653)-Sarana,A (2654) Lichess.org INT 2020}) 15... Bg5 16. c3 Bxf4 17. Nxf4 Nc5 18. Nxe6 Nxe6 19. Be2 Qh4 20. Bf3 Rfd8 21. g3 Qh6 $40 {[%mdl 128] White needs to defend precisely.} 22. Bg2 Nc4 {Pair of Knights!} 23. Qe2 (23. Bg1 $11 {might be stronger.}) 23... Nxd4 $15 24. cxd4 Qe3 25. Qh5 (25. Qf2 $11) 25... Rf8 $17 26. Qd5 Qd2 27. Rad1 (27. Rfd1 $17 Qxb2 28. Qg5) 27... Qxb2 {White must now prevent ...Ne3.} 28. Rb1 Qc2 {Hoping for ...Ne3.} 29. Rg1 Qxa4 30. Qxb7 Ne3 $1 31. Qb4 Qc2 32. Rb2 Qd3 33. Qd2 (33. Rb3 $142 Qe2 34. Qe1 Qxe1 35. Rxe1) 33... Rc3 $1 34. Qxd3 Rxd3 35. d5 (35. Re1 $17 {might work better.}) 35... h5 (35... a5 $1 $19 {Strongly threatening ...a4.} 36. Ra2 Ra8) 36. Ra2 Rb8 {[%cal Oa6a5]} 37. Bf1 Rd1 (37... Rd4 $19 {[%cal Oa6a5] and Black stays clearly on top. ...a5! is the strong threat.} 38. Bh3 Rb6) 38. Be2 Rd4 {[%cal Bd1d4,Bd4e4,Be4e5][%mdl 32]} 39. Bxh5 Rxe4 40. Re1 Re5 41. Bf3 Rb6 42. Kg1 g5 43. Kf2 Rb3 44. Rxa6 g4 45. Bh1 Rb2+ 46. Kg1 Nc4 {[%cal Re5e1]} 47. Rxe5 dxe5 $11 {[%mdl 4096] Endgame KRB-KRN} 48. Be4 {To avoid Rb1+} ({White should try} 48. Ra4 $11 Rb1+ 49. Kf2) 48... Rd2 (48... Kg7 $1 $15) 49. Ra4 (49. Rc6 $11 Rd4 50. Bf5) 49... Ne3 ({Black should play} 49... Nd6 $15 50. Bg2 f5) 50. Ra3 Nxd5 51. Ra8+ Kg7 {aiming for ...Rd1+.} 52. Rd8 Rd1+ 53. Kf2 Nc3 {[%csl LRd8,LRe4]} (53... Rd2+ 54. Ke1 Nf6 55. Kxd2 $16) 54. Rxd1 Nxd1+ {KB-KN} 55. Ke1 $1 (55. Ke2 Nc3+ 56. Kd3 Nxe4 57. Kxe4 Kf6 $19) 55... Ne3 56. Ke2 {[#]} (56. Kf2 $11 {remains equal.} Nd1+ 57. Ke1 (57. Ke2 $2 Nc3+ 58. Kd3 Nxe4 $19)) 56... Nc4 (56... f5 $1 $17 {[%cal Rf5e4]} 57. Kxe3 fxe4 58. Kxe4 Kf6) 57. Bf5 {The position is equal.} Nd6 58. Bxg4 f5 59. Bf3 e4 60. Bg2 Kf6 61. Ke3 Ke5 62. Bf1 Ne8 63. h4 Nf6 64. Be2 Nd5+ 65. Kf2 Kd4 66. Ba6 Nf6 67. Ke2 Nh5 68. Kf2 Ke5 69. Be2 Ng7 70. Ke3 Ne6 71. Bc4 Nd4 72. Ba6 Nc2+ 73. Kf2 Nb4 74. Bc8 Nd3+ 75. Ke2 Nc5 76. Ke3 Na4 77. Ba6 Nb6 78. Be2 Nd5+ 79. Kf2 Kd4 80. Ba6 Kc3 81. Ke2 Kd4 82. Kf2 Nf6 83. Be2 Kc3 84. Ke3 Nd5+ 85. Kf2 Kd2 86. h5 Nf6 87. h6 Nh7 88. Bb5 Ng5 89. Ba6 Nh7 90. Bb5 (90. Bc8 e3+ 91. Kf3 e2 92. Bxf5 Nf6) 90... Nf6 91. Be2 Nh7 {Whites escaped into a draw.  Weighted Error Value: White=0.18 (very precise) /Black=0.14 (very precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.8"]
[White "Carlsson, Ludvig"]
[Black "Nielsen, Andre"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "2355"]
[BlackElo "2232"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,65,23,20,42,56,52,51,43,37,50,60,50,39,47,40,40,16,44,37,99,70,80,-102,-35,-33,21,31,35,51,106,112,243,257,318,314,349,337,338,337,427,440,436,415,478,392,399,383,408,383,595,585]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 {[%cal Bf1b5,Bb5a4,Ba4b3][%mdl 32]} a6 4. Ba4 Nf6 5. O-O Bc5 6. c3 b5 7. Bb3 d6 8. d4 Bb6 9. a4 {Threatens to win with axb5.} Bg4 {C78: Ruy Lopez: Archangelsk and Möller Defences.} 10. h3 Bh5 11. Bg5 Rb8 {White is slightly better.} 12. d5 Ne7 13. Bxf6 gxf6 14. Bc2 Rg8 15. Kh2 Qc8 16. g3 Kf8 17. Nbd2 {[#]} Bg6 $146 (17... b4 $14) ({Predecessor:} 17... Kg7 18. axb5 axb5 19. Qe2 c6 20. dxc6 b4 21. c7 Qxc7 22. c4 Nc6 23. Qd3 Bg6 24. Rac1 Rgc8 25. Bd1 Ra8 26. Nb3 Ra2 27. Rc2 Qb7 28. Re1 Na5 {½-½ (28) Martello,J (2343)-Leite,D (2341) ICCF email 2018}) 18. a5 Ba7 19. g4 $2 (19. Nh4 $16 {stays on course.}) 19... c6 (19... h5 $17 20. Nh4 hxg4 21. Qxg4 Qxg4 22. hxg4 Bh7) 20. dxc6 Qxc6 (20... h5 $15 21. g5 Nxc6) 21. Nh4 $1 $11 d5 {[%cal Rd5e4]} 22. Qf3 ({Reject} 22. Nxg6+ hxg6 23. Qf3 d4 $17) 22... b4 {[#]} (22... d4 $14) 23. exd5 $1 $16 Nxd5 {This move loses the game for Black.} (23... Qxd5 $16 {was necessary.} 24. Ne4 Bxe4 25. Bxe4 Qc4) 24. Nxg6+ $18 hxg6 25. Be4 Qd6 {aiming for ...Nf4.} 26. Nc4 ({Worse is} 26. Bxd5 e4+ 27. Qg3 Qxd5 $17) 26... Qc7 27. Bxd5 e4+ 28. Qg3 Qc5 29. Nb6 {Nd7+ is the strong threat.} Kg7 30. Bxe4 Rbe8 31. Bg2 Bb8 32. f4 Re3 {[#]} (32... bxc3 $142 33. Qxc3 Qxc3 34. bxc3 Re2) 33. cxb4 $1 {Weighted Error Value: White=0.22 (precise) /Black=0.39} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.9"]
[White "Czerw, Dawid"]
[Black "Torngren, Gustav"]
[Result "1-0"]
[ECO "C70"]
[WhiteElo "2396"]
[BlackElo "2228"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,119,70,42,42,28,45,38,41,15,25,8,12,21,20,19,19,22,23,19,38,29,72,54,199,52,62,52,61,27,134,129,130,67,57,60,66,49,197,74,117,0,0,-6,45,37,29,46,71,68,44,61,63,68,72,38,93,83,537,140,125,115,84,67,68,72,104,0,0,0,104,29,14,0,8,10,52,48,51,47,675,671,666,657,29975,29976,29976,29977,29979,29980,29980,29981,29982,29983,29983,29984,29984,29985,29985,29986,29986,29987,29987,29988,29988,29987]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5 5. Bb3 Na5 6. O-O d6 7. d4 Nxb3 8. axb3 f6 {The main line 8...f6 scores better than 8...exd4.} 9. c4 b4 {C70: Ruy Lopez: 3...a6 4 Ba4, Norwegian and Delayed Schliemann.} 10. d5 c5 {[#]} 11. dxc6 $146 ({Predecessor:} 11. Nh4 g6 12. f4 exf4 13. Bxf4 Nh6 14. Nd2 Nf7 15. Bg3 Bg7 16. Qc2 {½-½ (16) King,D (2515)-Gausel,E (2440) Gausdal 1990}) 11... Ne7 {White is slightly better.} 12. Ne1 Nxc6 13. Be3 Be6 14. Nd3 Be7 15. f4 O-O 16. f5 Bf7 17. Nd2 Qb8 18. Qg4 g5 (18... Kh8 $11 {deserves consideration.}) 19. fxg6 (19. Qg3 $5 {[%cal Rh2h4]}) 19... hxg6 ({Black should try} 19... Bxg6 $14 20. Nf2 a5) 20. Rf3 (20. Nf3 $18) 20... Kg7 $1 $14 21. Raf1 $1 $36 {[%mdl 2048] White has good play. White is more active.} Qc8 $1 22. Qh4 Rh8 {Prevents Qh6+.} (22... g5 $1 $11 23. Qg3 Bg6) 23. Qf2 $1 $16 {[%cal Rf3f6]} Qe6 {[#]} 24. Bg5 $1 {[%mdl 512]} fxg5 $14 25. Rxf7+ Kg8 $1 26. c5 Nd8 {[#]} ({Black should play} 26... dxc5 $1 $14 27. Nc4 (27. Nxc5 Qd6 $14) 27... Nd8) 27. Rf3 (27. Rxe7 $1 $18 {[%mdl 512] has better winning chances.} Qxe7 28. Nxb4 (28. Nc4 dxc5 29. Nb6 Rb8 $16)) 27... g4 {[#]} (27... dxc5 $142 28. Nxc5 Qd6) 28. Re3 (28. Rf8+ $1 $16 {[%mdl 512]} Bxf8 29. Qxf8+ Kh7 30. Qxd6) 28... dxc5 $11 29. Ree1 Kh7 (29... g3 $11 30. hxg3 (30. Qxg3 Bh4 $15) 30... Rh7) 30. Nc4 $14 Rf8 31. Qe3 Nc6 32. Nxc5 Bxc5 33. Qxc5 Rxf1+ 34. Rxf1 Rd8 {Prevents Nd6.} 35. Qb6 {Threatens to win with Ne3.} Rd3 (35... Rd4 $14) 36. Qxa6 {[%cal Oc4e5] aiming for Nxe5!} Nd4 $2 {[%mdl 8192]} (36... Qd7 $16 {is more resistant.}) 37. Qxe6 $2 (37. Qb7+ $18 {and White stays clearly on top.} Kh6 38. Qb8 Ne2+ 39. Kf2) 37... Nxe6 $16 38. Nxe5 Rxb3 $18 {[%mdl 4096] Endgame KRN-KRN} 39. Nc4 Rd3 40. Rf7+ Kh6 41. Rb7 (41. Ne5 $1 $16 {[%cal Re5d3]} Rd2 42. Nxg4+ (42. Rf6 Nc5 $11) 42... Kg5 43. Ne5) 41... Nc5 $11 42. Re7 Rd1+ 43. Kf2 Rd4 {[%csl LRc4,LRe4]} 44. Ne3 Nxe4+ 45. Ke2 Nf6 (45... Nc5 $11 {feels stronger.}) 46. Rb7 Re4 {Hoping for ...Nd5.} 47. Kd3 Re5 $2 {[%mdl 8192] [#]} (47... Re8 $14) 48. Rf7 $1 $18 Kg5 {[#]} 49. Rxf6 {[%mdl 512]} Rxe3+ (49... Rb5 50. Rd6) 50. Kxe3 {White mates.} Kxf6 {K3P-K3P} 51. Kd4 Kf5 52. Kc4 Ke4 53. Kxb4 {K3P-KPP} Ke3 54. Kc3 Kf2 55. b4 Kxg2 56. b5 Kxh2 57. b6 g3 58. b7 g2 59. b8=Q+ Kh3 60. Qa7 {Weighted Error Value: White=0.32/Black=0.47} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.10"]
[White "Michalczak, Thomas"]
[Black "Urkedal, Frode Olav Olsen"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2218"]
[BlackElo "2553"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,70,45,37,30,31,22,0,0,-16,-24,0,0,0,0,0,0,0,-18,-12,-7,-56,-47,-108,-115,-143,-144,-141,-156,-133,-154,-491,-488,-472,-465,-463,-473,-470,-453,-557,-536,-504,-320,-301,-289,-294,0,-482,-505,-570,-604,-1139,-606,-579,-552,-692,-673,-2329,-2164,-1239,-1131]} 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 e6 6. Na3 Qd8 7. Nc4 Be7 {now supersedes 7...Nc6. B22: Sicilian: 2 c3.} 8. Bg5 O-O 9. Bd3 cxd4 {[#] The position is equal.} 10. cxd4 $146 ({Predecessor:} 10. Nxd4 Qd5 11. Nf3 Rd8 12. Be2 Qxd1+ 13. Rxd1 Rxd1+ 14. Bxd1 h6 15. Bf4 Nd5 16. Bd6 {½-½ (79) Korpa,B (2468)-Gara,A (2358) Budapest 2016}) 10... Nc6 11. O-O Nb4 12. Bb1 b6 13. a3 Nbd5 14. Nce5 Bb7 15. Qd3 Rc8 16. Ng4 g6 $15 17. Nh6+ (17. Nge5 $15) 17... Kg7 $1 $17 ({Reject} 17... Kh8 $6 18. Bd2 $11 (18. Ne5 Qe8 $15)) 18. Ne5 Nh5 19. Nhxf7 Rxf7 {Chess con chili.} 20. Bh6+ Kg8 21. Nxg6 (21. Nxf7 $17 Kxf7 22. Qf3+ Kg8 23. Qg4) 21... Bd6 {And now ...Qf6 would win.} 22. Qh3 hxg6 23. Bxg6 Ng7 24. Bxf7+ Kxf7 25. Bxg7 Kxg7 26. Qg4+ Kf6 {Hoping for ...Qh8.} 27. Qh4+ {[#]} Kg6 $1 28. Qe4+ {[#]} Kg7 $2 (28... Kh6 $1 {...Qe7 is the strong threat.} 29. Qxe6+ Qf6) 29. Qg4+ $19 Kf8 {White must now prevent ...Rc7. Black is clearly winning.} ({Wrong is} 29... Kh8 $2 30. Rfc1 $19) 30. Qxe6 Rc7 {[%cal Bc8c7,Bc7g7,Bg7g2,Bg2f2][%mdl 32] Threatens to win with ...Nf4.} 31. Rfe1 Rg7 {Active counter play!} 32. Qh6 Nf6 33. Re6 Kf7 34. Rae1 Rxg2+ 35. Kf1 {[#]} Rxf2+ $3 {[%mdl 512] Weighted Error Value: White=0.61/Black=0.33} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.11"]
[White "Grutter, Tim"]
[Black "Fus, Jakub"]
[Result "1-0"]
[ECO "C07"]
[WhiteElo "2194"]
[BlackElo "2384"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,96,0,0,-8,-8,-15,0,-12,0,0,40,0,0,0,0,0,12,0,0,0,7,-2,47,-39,56,67,43,23,25,0,68,79,160,162,172,165,164,164,175,170,167,164,185,180,179,179,287,285,318,305,347,333,537,520,708,644,589,519,564,527,762,736,1553,1498,1617,1124,2811,2301,8762,7835,4810,4118,12744,12718,7064,6079,2354]} 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd7 7. O-O Nc6 8. Nb3 Nf6 9. Nbxd4 Nxd4 10. Nxd4 a6 11. c3 Qc7 12. Be2 {C07: French Tarrasch: 3...c5, 4 Ngf3 and 4 exd5 Qxd5.} Bd6 13. h3 Bd7 {[#]} 14. Bf3 $146 {The position is equal.} ({Predecessor:} 14. Bg5 h6 15. Bxf6 gxf6 16. Bh5 Rg8 17. Qe2 e5 18. Bg4 O-O-O 19. Nf5 Bxf5 20. Bxf5+ {0-1 (42) Drozdowski,K (2437)-Lewtak,D (2265) Olsztyn 2013}) 14... O-O-O 15. Qc2 Rdg8 16. Rd1 g5 17. c4 $1 {[%cal Oc4c5]} h5 18. c5 $1 Qxc5 {...g4 is the strong threat.} 19. Qb3 Qb4 (19... Nd5 $2 20. Be3 Qa5 21. Nf5 $1 $18 {[%mdl 512]}) 20. Qc2+ Kb8 21. a3 Qb6 {[#]} (21... Qa4 $11 22. Qxa4 Bxa4) 22. Be3 (22. Nc6+ $1 $14 Bxc6 23. Rxd6) 22... Nd5 (22... Qc7 $1 $15 23. Qb3 g4) 23. Bxd5 $14 exd5 24. Nf5 Qc7 25. Qd3 Bxf5 (25... Bh2+ $11 26. Kh1 Bf4) 26. Qxf5 {White leaves nothing to chance now.} Bf4 ({Black should play} 26... f6) 27. Rac1 $1 $36 {[%mdl 2048] Black is under strong pressure. White is more active.} (27. Qxd5 Bxe3 28. fxe3 g4 29. hxg4 Rxg4 $11) 27... Qe5 28. Bxf4 ({Worse is} 28. Qxf7 Bxe3 29. fxe3 Qxe3+ 30. Kh1 g4 $17) (28. Rxd5 $6 Qxf5 29. Rxf5 Bxe3 30. fxe3 Rg7 $14) 28... Qxf4 29. Qxf4+ ({Don't take} 29. Qxd5 $6 Rc8 30. g3 Qf6 $14) 29... gxf4 30. Rxd5 $18 {[%mdl 4096] Endgame KRR-KRR} Rh6 {[#]} 31. f3 $1 Rhg6 32. Rc2 Rg5 {[#]} 33. Rcd2 Kc8 (33... h4 $142 34. Rd7 Rf5) 34. h4 {[%cal Bh3h4,Bh4h5,Bh5h6][%mdl 32]} Rxd5 35. Rxd5 {KR-KR} Rd8 36. Rxh5 Rd2 $2 (36... Rd1+ 37. Kh2 Kd7) 37. Rf5 {[%csl LRf4,LRf7] White is clearly winning.} Rxb2 38. h5 Rb6 39. Rxf4 Rh6 40. g4 {[%cal Bg2g4,Bg4g5][%mdl 32]} Rh7 41. Rf6 {Black must now prevent h6.} Kc7 42. h6 a5 43. g5 b5 44. Kf2 b4 45. axb4 axb4 46. Rf4 Kd6 47. Rxb4 {Threatening mate with f4.} Ke5 48. Kg3 {Threatens to win with Kg4.} Kf5 {Weighted Error Value: White=0.09 (flawless) /Black=0.34} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.12"]
[White "Jordanov, Mihail"]
[Black "Plischki, Sebastian"]
[Result "0-1"]
[ECO "B42"]
[WhiteElo "2193"]
[BlackElo "2375"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,55,16,10,32,30,25,0,0,0,60,0,0,-45,-50,-50,-29,-20,0,-18,-23,-21,43,-168,-157,-162,-143,-437,-434,-400,-354,-933,-887,-989,-649,-29992,-29993,-29996,-29994,-29997,-29998,-29998,-29999,-29999]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. Qg4 Nf6 8. Qg3 {e5 is the strong threat.} d6 {B42: Sicilian: Kan Variation: 5 Bd3.} 9. Nc3 (9. Qxg7 Rg8 10. Qh6 Bxf2+ $1 11. Kd1 Rxg2 $17) 9... Nc6 10. Bg5 (10. Qxg7 Rg8 11. Qh6 {[#]} Bxf2+ $1 12. Kd1 Rg6 $17) 10... h6 {The position is equal.} 11. Bd2 Ne5 (11... Nh5 $11 12. Qh3 Nf6) 12. O-O-O ({Avoid the trap} 12. Qxg7 $2 Ng6 13. e5 (13. Bxh6 $2 Rh7 $19) 13... Nh5 14. Qxh8+ Nxh8 $19) (12. Be2 $1 $14) 12... b5 $11 {[%cal Bb7b5,Bb5b4][%mdl 32]} 13. f4 (13. Qxg7 Ng6 14. Nd5 (14. Bxh6 $2 Rh7 $19) 14... Nh5) (13. a3 $11) 13... Nxd3+ $15 14. cxd3 {[#] Hoping for e5.} b4 $146 ({Predecessor:} 14... O-O 15. Kb1 Kh8 16. Ne2 Bb6 17. Qf3 a5 18. g4 a4 19. Nbd4 e5 20. Nf5 Bxf5 21. exf5 {½-½ (42) Klauser,M (2389)-Pelletier,Y (2563) Leukerbad 2015}) 15. Ne2 {aiming for e5.} ({Much weaker is} 15. Qxg7 Rg8 16. Qxh6 bxc3 17. Bxc3 Ng4 $17) 15... a5 $1 16. Qxg7 Rg8 $36 {[%mdl 2048] Black has the initiative.} 17. Qxh6 Rxg2 (17... Ba6 $11 18. Be1 Ng4) 18. Qh8+ $2 (18. Nbd4 $1 $14 {stays ahead.}) 18... Kd7 $19 {Really sharp!} 19. Qxd8+ Kxd8 20. Rde1 $2 {[%mdl 8192] This move loses the game for White.} (20. Ned4 $17 Kd7 21. Be3) 20... Ba6 21. Nxa5 Rc8+ 22. Kd1 $2 (22. Nc4 Nxe4 23. Kc2) 22... Bxd3 23. Bxb4 Nxe4 {( -> ...Nf2+)} 24. Bc3 Be3 {[%cal Re4f2] A strong pair of Bishops. Black mates.} 25. Rhf1 Rxh2 26. Nb3 {[#]} Rxc3 $1 {[%mdl 512]} 27. bxc3 {[#]} Nxc3+ $1 {[%mdl 512]} 28. Nxc3 Bc2# {Weighted Error Value: White=0.80/Black=0.30} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.13"]
[White "Schouten, Mathias Lind"]
[Black "Sorm, Daniel"]
[Result "0-1"]
[ECO "C78"]
[WhiteElo "2165"]
[BlackElo "2348"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,62,-7,4,-7,-2,-7,-9,-11,16,-43,-28,-29,-9,-80,-72,-75,-84,-97,-70,-106,-99,-183,-175,-176,-164,-220,-194,-234,-214,-174,-180,-183,-144,-215,-218,-202,-193,-177,-171,-154,-167,-413,-414,-407,-379,-422,-383,-386,-389]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 {[%cal Bf1b5,Bb5a4,Ba4b3][%mdl 32]} a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bb7 7. c3 Nxe4 8. Re1 d5 9. d3 {C78: Ruy Lopez: Archangelsk and Möller Defences.} Nc5 10. Nxe5 Nxe5 11. Rxe5+ {The position is equal.} Ne6 12. Qh5 (12. Nd2 $11) 12... g6 $15 13. Qf3 Bg7 (13... Bd6 $5 {[%cal Rd6e5]} 14. Re2 (14. Bxd5 Bxd5 15. Rxd5 O-O $17) (14. Bg5 Qd7 $15) 14... O-O $11) 14. Bg5 Qd6 $17 15. Bf6 {Bxg7 is the strong threat.} O-O {[%cal Oe6d4,Be8g8,Bg8g7,Bg7f8][%mdl 32] And now ...Nd4! would win.} 16. Bxg7 Kxg7 {[#]} 17. d4 $146 {[%cal Rb3d5]} ({Predecessor:} 17. Re1 c5 18. Nd2 Rad8 19. Rad1 Rd7 20. Qg3 Qxg3 21. hxg3 c4 22. dxc4 dxc4 23. Bc2 {0-1 (62) Bakunin,D (1930)-Amirkhanov,R (2220) Kazan 2006}) 17... c5 ({Reject} 17... f6 $6 18. Re3 $11) 18. Qe3 (18. Bxd5 $17 cxd4 19. Qe4) 18... cxd4 $19 19. cxd4 Rfe8 {aiming for ...f6.} 20. Qe1 (20. Qd2 $142) 20... Kf8 $1 21. Nc3 Nxd4 22. Rxe8+ Rxe8 23. Qd2 Qe5 24. Rd1 (24. f4 $17 {is a better defense.} Ne2+ 25. Nxe2 Qxe2 26. Qd4) 24... Nxb3 25. axb3 {[#]} d4 $1 26. Na2 Qe4 {[%csl Gb7][%cal Re4g2]} 27. f3 Qe3+ $40 {[%mdl 128] Black wants a kill.} 28. Kf1 $2 {[#]} (28. Qxe3 dxe3 29. b4) 28... Bxf3 $1 {[%mdl 512] ( -> ...Be2+)} 29. Qxe3 dxe3 30. Re1 Bb7 31. Nb4 f5 {White got outplayed after the opening.  Weighted Error Value: White=0.42/Black=0.07 (flawless)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.14"]
[White "Soucek, Petr"]
[Black "Ondrus, Martin"]
[Result "1/2-1/2"]
[ECO "B53"]
[WhiteElo "2117"]
[BlackElo "2267"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,84,6,6,4,0,9,29,0,0,0,21,1,47,-6,37,9,13,0,0,0,0,0,4,15,23,23,19,25,25,22,21,6,29,11,57,23,35,29,68,58,89,72,184,157,182,180,187,142,205,174,176,183,205,152,156,62,61,62,80,17,18,18,27,0,0,0,0,0,56,54,62,76,161,0,4,0,138]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Qe3 Nf6 6. Be2 {B53: Sicilian: 2...d6: Lines with Qxd4.} g6 7. O-O Bg7 8. h3 {White has an edge.} O-O 9. Rd1 Nd7 10. Nc3 Nc5 {[#]} (10... Nb4 $11 {is superior.} 11. Qd2 b6) 11. Qf4 $146 (11. Rb1 $14) ({Predecessor:} 11. Nd5 Be6 12. c3 Rc8 13. Qf4 Ne5 14. Nd4 Bd7 15. Be3 e6 16. Nb4 a5 17. Nbc2 {1-0 (68) Real de Azua,E (2440)-Raja,R (2408) Chess.com INT 2021}) 11... e5 (11... Bxc3 $11 {is more appropriate.} 12. bxc3 Qa5) 12. Qd2 (12. Qg5 $5 {[%cal Rg5d8]}) 12... Nd4 13. Nxd4 exd4 14. Nb5 Nxe4 15. Qf4 Re8 16. Nxd4 ({Much weaker is} 16. Bc4 d5 17. Bb3 Be5 $17) 16... Be5 17. Qf3 d5 18. c3 Qb6 19. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} Bd7 20. a5 Qd6 21. Bd3 f5 (21... Bxd4 $11 22. cxd4 Qb4) 22. Ne2 Bc6 {[%cal Oe4d2]} 23. Bf4 {To avoid Nd2} g5 24. Bxe5 Qxe5 25. Nd4 {And now a6 would win.} Rf8 (25... Bd7 $16 {was called for.}) 26. Qe2 Qf6 27. f3 $1 Nd6 28. Qe6+ (28. a6 $18) 28... Kg7 (28... Qxe6 $16 29. Nxe6 Rf6) 29. Qxf6+ Kxf6 30. a6 Rfe8 31. axb7 Bxb7 {[%cal Bc6b7,Bb7c8,Bc8d7][%mdl 32]} 32. Re1 ({White should play} 32. Kf2 $16) 32... Rxe1+ $1 $14 33. Rxe1 {Re6+ is the strong threat.} Bc8 {[#] Inhibits Re6+.} 34. Ra1 {White is much more active.} ({White should try} 34. Ba6 $1 $16) 34... a5 $1 $11 35. Kf2 Bd7 36. Ke2 h5 37. Kd2 f4 38. b3 Nc8 (38... a4 $11) 39. Bb5 $1 $14 Bxb5 40. Nxb5 Nb6 {[#]} (40... Ne7 $16) 41. Nc7 $2 (41. Kd3 $1 $18) 41... Rc8 42. Nb5 (42. Na6 $11) 42... Ra8 {White really could win this.  Weighted Error Value: White=0.22 (precise) /Black=0.19 (very precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.15"]
[White "Unneland, Mathias"]
[Black "Bouska, Jiri"]
[Result "1-0"]
[ECO "B36"]
[WhiteElo "2262"]
[BlackElo "2071"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,95,49,39,63,59,43,52,61,28,45,27,70,62,59,55,64,61,56,56,91,74,130,152,231,134,131,136,131,122,122,108,104,108,121,109,131,96,135,50,77,27,32,24,26,6,8,6,36,6,8,0,0,0,50,47,83,73,270,89,164,0,264,264,329,309,437,437,624,618,581,571,857,860,752,695,29983,29984]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nf6 6. Nc3 d6 7. Be2 Nxd4 8. Qxd4 Bg7 9. Be3 O-O 10. Qd3 Be6 {10...a5 is more fashionable.} 11. O-O Ng4 {B36: Sicilian: Maroczy Bind: Gurgenidze System.} 12. Bd4 Bxd4 13. Qxd4 Nf6 {White is slightly better.} 14. Kh1 {[#]} Qa5 $146 ({Predecessor:} 14... Qb6 15. Qd2 Qc6 16. b3 Rab8 17. Bd3 Kg7 18. f4 a6 19. a4 Qc5 20. Bc2 Bd7 21. a5 Bc6 22. h3 e6 {½-½ (41) Rodionova,P (2003)-Isambaev,A Samara 2015}) 15. f4 {[%cal Of4f5]} Qc5 (15... Rac8 $11) 16. Qxc5 $14 dxc5 17. f5 gxf5 18. exf5 Bd7 19. Bf3 h5 20. Rae1 (20. Bxb7 $6 Rab8 21. Bf3 Rxb2 $11) 20... Bxf5 (20... Rad8 $142) 21. Bxb7 $16 Rab8 (21... Bd3 $16 {is a better defense.}) 22. Rxf5 (22. Rxe7 $18 Rfe8 23. Rxe8+ (23. Rxf5 $2 Rxe7 24. h3 Rexb7 $19) 23... Rxe8 24. g4 Be4+ 25. Nxe4 Nxe4 26. Bd5 (26. gxh5 Nd6 $18)) 22... Rxb7 {[#]} 23. b3 ({Resist} 23. Rxc5 $6 Rxb2 24. Rxe7 Rc2 25. Rg5+ Kh8 $14) 23... Rc8 24. h3 {White is more active.} Rd7 25. Ne4 Nxe4 26. Rxe4 {[%mdl 4096] Endgame KRR-KRR} f6 27. Rxh5 Rcc7 28. Rf4 Kg7 29. Rhf5 (29. Rg4+ $16 Kf7 30. Rh7+ Ke6 31. Kh2) 29... Rd2 30. Rf2 (30. a4 $16) 30... Rxf2 $1 $11 31. Rxf2 {KR-KR} Rd7 {To avoid Rd2} 32. Re2 e5 33. Kg1 Kf7 34. Kf2 Ke6 35. Ke1 f5 36. Rd2 {And now Rxd7 would win.} Rg7 (36... f4 $1 $11) 37. Kf2 $14 Rc7 38. Kf3 Rc6 $2 (38... a5 $16) 39. Rd5 $2 (39. g4 $18 {and White stays clearly on top.}) 39... Ra6 (39... a5 $16) 40. Rd2 (40. Rxc5 $142 Rxa2 41. Rc6+ Kf7 42. g4) 40... Rc6 $1 $18 41. g4 a5 {[#]} 42. Rd8 {Inhibits Rc8. Black must now prevent Re8+.} fxg4+ (42... Ke7 $142 43. Ra8 Rd6) 43. hxg4 a4 (43... Rc7 $142 44. Ra8 Rf7+ 45. Ke3 Rf4 46. Ra6+ Ke7 47. Rxa5 Rxg4 48. Rxc5 Kd6) 44. Rh8 Kf7 45. Ke4 axb3 46. axb3 Rg6 47. Kf5 {White threatens Rh7+ and mate.} e4 48. Rh7+ {Weighted Error Value: White=0.23 (precise) /Black=0.55} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.16"]
[White "Dev, Shah"]
[Black "Matras, Ondrej"]
[Result "1-0"]
[ECO "A67"]
[WhiteElo "2243"]
[BlackElo "2223"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,57,77,57,97,112,98,72,83,58,173,168,283,318,268,286,406,405,666,664,1505,1474,1461,1340,1745,2182,2152,1950,2089,4600,2080,1808,29987,5485,29988,29989,29989,29990]} 1. d4 {ChessBase II} Nf6 2. c4 c5 3. d5 d6 4. Nc3 e6 5. e4 exd5 6. cxd5 g6 7. f4 Bg7 8. Bb5+ Nfd7 9. a4 Qh4+ 10. g3 Qe7 {10...Qe7 is better than 10...Qd8.} 11. Nf3 O-O 12. O-O $1 Na6 {A67: Modern Benoni: Taimanov Variation.} 13. e5 Nb4 {[#]} 14. Ne4 $1 dxe5 {White is better.} 15. d6 {White is more active.} Qd8 {[#]} (15... Qe6 $14) 16. fxe5 $1 $18 {[#] Bg5 is the strong threat.} Nxe5 $146 (16... h6 {might work better.} 17. Nf6+ Bxf6 18. exf6 a6) ({Predecessor:} 16... h6 17. Bf4 a6 18. Bxd7 Bxd7 19. Qd2 g5 20. Nfxg5 Bf5 21. Rae1 Qc8 22. Nf3 Bxe4 23. Rxe4 {1-0 (38) Bagirov,V (2480)-Bouhallel,R (2205) Cappelle la Grande 1988 EXT 2002 [ChessBase II]}) 17. Bg5 (17. Nxe5 Bxe5 18. d7 Bd4+ 19. Kg2 Bxd7 20. Bxd7 Qe7 $11) 17... Nxf3+ 18. Qxf3 f6 (18... Bd4+ $142 19. Kh1 f6) 19. Nxf6+ Bxf6 (19... Kh8 $142 20. Qf4 (20. d7 Bxd7 21. Rad1 Bxf6 $18) 20... h5) 20. Bxf6 Qxd6 21. Bc4+ {[%cal Bb5c4,Bc4e6,Be6f7][%mdl 32]} Be6 22. Rad1 {[%cal Ba1d1,Bd1d5,Bd5d8][%mdl 32]} Nd5 23. Rxd5 Qc6 24. Qb3 {[%cal Od5d8] White threatens Rd8! and mate.} Rf7 25. Rd8+ Rxd8 26. Bxe6 ({Weaker is} 26. Bxd8 Rxf1+ 27. Kxf1 Qh1+ 28. Kf2 Qxh2+ 29. Kf3 Qh1+ 30. Kf2 (30. Kf4 Qc1+ 31. Ke5 Bxc4 $17) 30... Qh2+ 31. Kf3 Qh1+ 32. Kf2 (32. Kf4 Qc1+ 33. Ke5 Bxc4 $17) 32... Qh2+ $11) 26... Rd2 27. Bxf7+ {A strong pair of Bishops.} Kf8 {[#]} 28. Be7+ $1 Kxe7 29. Qe3+ {Weighted Error Value: White=0.02 (flawless) /Black=1.43} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.17"]
[White "Goossens, Hanne"]
[Black "Cholleti Sahajasri"]
[Result "0-1"]
[ECO "B92"]
[WhiteElo "2133"]
[BlackElo "2235"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,78,0,0,0,8,17,14,63,65,76,72,73,38,30,33,60,64,63,26,39,20,33,-26,-23,-27,-27,-92,-32,-81,-69,-109,-125,-120,-99,-101,-101,-100,-93,-202,-199,-491,-694,-517,-472,-479,-458,-625,-522,-1250,-515,-506,-505,-482,-457,-29981,-29982,-29985,-29986,-29985,-29982,-29976,-29976]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. Be3 Be6 9. Nd5 Nbd7 10. Qd3 O-O {B92: Sicilian Najdorf: 6 Be2.} 11. a4 Rc8 12. c4 {[%cal Bc2c4,Bc4d5][%mdl 32]} Bxd5 (12... Ng4 $11) 13. cxd5 $14 {[#]} Nc5 $146 ({Predecessor:} 13... Nb6 14. Nd2 Nbd7 15. a5 Nc5 16. Qb1 Ne8 17. b4 Nd7 18. O-O g6 19. Nc4 Bg5 {1-0 (68) Quesada Perez,Y (2598)-Lettieri,G (2435) Chess.com INT 2020}) 14. Nxc5 dxc5 15. O-O c4 16. Qc2 b5 17. axb5 axb5 18. Kh1 h6 19. Ra6 Bc5 20. Bd2 (20. Bxc5 $14 Rxc5 21. f3) 20... Qe7 $11 21. f3 Bd4 22. Be1 (22. Rfa1 $11) 22... Nh5 ({Black should play} 22... Ra8 $17 23. Rxa8 Rxa8) 23. b3 (23. g3 $15 {is more appropriate.}) 23... Nf4 $17 {...Qg5 is the strong threat. White is on the road to losing.} 24. bxc4 Nxe2 {Black is more active.} 25. Qxe2 bxc4 26. Bf2 Qc5 27. Ra2 f5 28. Bg1 (28. Bg3 $17) 28... fxe4 $19 29. fxe4 (29. Qxe4 Rfd8 30. h3 (30. Bxd4 $2 exd4 31. Rd2 Qxd5 $19)) 29... Rxf1 30. Qxf1 c3 31. Rc2 Rf8 32. Qd1 Qc4 {( -> ...Rf1)} 33. Re2 c2 (33... Bxg1 $142 34. Kxg1 Qc5+ 35. Kh1 c2) 34. Rxc2 {[#]} Rf1 $1 {[%mdl 512]} 35. Rxc4 Rxd1 {[%csl Gd4][%cal Rd1g1]} 36. Rxd4 ({Reject} 36. Rc8+ Kf7 37. h4 (37. Rc7+ $2 Kf6 $19) 37... Rxg1+ $19) (36. h4 $19 Rxg1+ 37. Kh2) 36... exd4 {[%cal Be5d4,Bd4d3,Bd3d2][%mdl 32] Black mates.} 37. g3 d3 38. Kg2 {[#]} Rxg1+ $1 {[%mdl 512]} 39. Kxg1 d2 {Weighted Error Value: White=0.73/Black=0.27 (precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.18"]
[White "Mach, Ondrej"]
[Black "Hrbek, Stepan"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "1893"]
[BlackElo "2179"]
[Annotator "ChessBase"]
[PlyCount "1"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.19"]
[White "Thompson, Ian D"]
[Black "Bomans, Arno"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "2095"]
[BlackElo "2246"]
[Annotator "TA"]
[PlyCount "100"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,100,0,0,0,0,9,2,30,25,44,60,48,83,88,0,0,0,14,16,11,17,15,-282,-275,-266,-264,-260,-242,-225,-185,-177,-197,-249,-193,-208,-93,-85,-85,-133,-89,-139,-106,-191,-231,-202,-164,-406,-409,-563,-386,-1269,-1218,-29990,-29991,-29991,-29992,-29991,-251,-251,0,0,0,0,0,0,261,263,250,247,247,247,247,247,247,247,276,0,0,-544,-535,-29998,-29999]} 1. Nf3 c5 2. c4 Nc6 3. Nc3 e5 4. g3 g6 5. Bg2 Bg7 6. O-O d6 7. d3 Nge7 8. a3 a5 9. Rb1 O-O 10. Bd2 Rb8 11. Qa4 Be6 {A37: Symmetrical English vs ...g6: 4 Bg2 Bg7 5 Nf3.} 12. Rfc1 h6 13. Ne1 {[#]} Nd4 $146 {[%cal Ob7b5] The position is equal.} ({Predecessor:} 13... f5 14. e3 f4 15. exf4 exf4 16. Bxf4 g5 17. Be3 Qd7 18. Be4 Nf5 19. Nf3 Qe8 {0-1 (62) Brookes,J (2468)-Uenalmis,H (2553) ICCF email 2016}) 14. Qd1 b5 15. e3 bxc4 16. exd4 exd4 17. Ne2 ({White should play} 17. Na4 $16) 17... cxd3 $11 18. Nxd3 Ba2 19. Ra1 Bb3 20. Qe1 a4 21. Nxc5 $2 {[%mdl 8192]} dxc5 $19 22. Rxc5 d3 $1 {[%csl LRb2,LRe2]} 23. Nc3 Nf5 24. Bf4 Bc2 25. Rd5 (25. Bxb8 Qxb8 26. Nb5 Nd4 27. Nxd4 Bxd4 28. Rxc2 dxc2) 25... Qc8 26. Rc1 (26. Bxb8 $142 Qxb8 27. Nb5 Bxb2 28. Rb1 (28. Ra2 $2 Bg7 $19) 28... Bxb1 29. Qxb1) 26... Rxb2 27. Nxa4 {[#]} Ra2 (27... Nd4 $1 $19 {[%mdl 512] has better winning chances.} 28. Nxb2 Ne2+ 29. Kh1 Bxb2 30. Bxh6 Re8) 28. Qb4 $17 Qa6 $1 29. Ra5 (29. Rxf5 $142 gxf5 30. Bd5 $1) 29... Qf6 $1 30. Bd5 (30. Be5 $142 Qe7 31. Qxe7 Nxe7 32. Nc3) 30... Ra1 31. Kg2 (31. Rxa1 $17 Qxa1+ 32. Kg2) 31... Rxc1 $1 $19 32. Bxc1 Nd4 {Hoping for ...Nc6.} 33. Bb2 $2 (33. Nc3 {was necessary.}) 33... Rd8 {[%cal Od8d5] aiming for ...Rxd5!} 34. Bb7 Rb8 35. Nc5 $2 {[#]} (35. Qxd4 Qxd4 36. Bxd4) 35... Rxb7 $1 {[%mdl 512]} 36. Nxb7 (36. Ra8+ Kh7) 36... Qf3+ 37. Kh3 {[#]} d2 $1 38. Qxd2 {[#]} (38. Qc3 d1=Q) 38... Qxb7 $2 (38... Be4 $1 {mates} 39. Qxd4 Bxd4 40. Nd6 Bc6 $1 41. Rb5 h5 $1 42. Rb8+ Kh7 43. Rh8+ Bxh8 44. Ne4 Bd7+ 45. Kh4 Qg4#) 39. Bxd4 Qd7+ $2 (39... Be4 $1 $19 {[%cal Re4g2] ( -> ...Bg2+)} 40. Bxg7 Bg2+ 41. Kh4 Qe7+ 42. Rg5 Kxg7) 40. g4 h5 $1 {[%csl Gh5][%cal Rd7g4]} 41. f3 {[%cal Oa5c5]} hxg4+ $40 {[%mdl 128] Black mounts an attack.} 42. fxg4 {[%cal Oa5c5] Strongly threatening Rc5!} Be4 $2 {[%mdl 8192]} (42... Qxd4 $11 {and Black is okay.} 43. Qxc2 (43. Ra8+ Kh7 $11) 43... Qe3+ 44. Kg2 Bd4) 43. Bc3 $18 Bd3 44. Ra8+ Kh7 {[#] And now ...Bf1+ would win.} 45. Qf2 {Inhibits Bf1+. White wants to mate with Qh4+.} g5 {Inhibits Qh4+. White must now prevent ...Be4.} 46. Bxg7 Kxg7 47. Ra5 $1 (47. Qc5 Bf1+ 48. Kg3 Qd3+ 49. Kf2 Qe2+ 50. Kg3 Qg2#) 47... Kg6 {[#]} 48. Qb6+ $2 ({White must play} 48. Re5 $1 $18) 48... f6 $11 {Dancing on a razor blade.} 49. Qf2 {[%mdl 8192] To avoid Bf1+} (49. Kg3 $11 Bc2 {[#]} 50. Rxg5+ $1 (50. Ra6 Qd3+ 51. Kf2 Qd2+ 52. Kf3 Qd3+ 53. Kf2 Qd2+ 54. Kf3 Qd3+ 55. Kf2 $11) 50... Kxg5 51. Qc5+ f5 52. h4+ (52. Qxc2 f4+ 53. Kf3 Qb7+ 54. Qe4 Qb3+ 55. Kg2 Qb2+ 56. Kg1 Qc1+ 57. Kf2 Qb2+ 58. Qe2 Qb6+ 59. Kf1 Qb1+ 60. Kg2 Qb7+ 61. Kh3 Qb3+ 62. Kg2 Qb7+ 63. Kg1 Qb6+ 64. Qf2 Qb1+ 65. Qf1 Qb6+ 66. Kg2 Qb7+ 67. Qf3 Qb2+ 68. Kh1 Qc1+ 69. Kg2 Qb2+ 70. Qf2 Qb7+ 71. Kh3 Qb3+ 72. Kg2 Kxg4 $11) 52... Kh6 53. Qxc2 (53. g5+ Kh5 $11) 53... Qd6+ 54. Kg2 (54. Kf3 Qxa3+ 55. Kf4 Qd6+ 56. Kf3 Qa3+ 57. Kg2 Qa8+ 58. Kh2 Qb8+ 59. Kh3 fxg4+ 60. Kxg4 Qg8+ 61. Kf4 Qf7+ 62. Qf5 Qxf5+ 63. Kxf5 Kh7 $11) 54... Qd5+ 55. Kh2 (55. Kg3 Qd6+ 56. Kg2 Qd5+ 57. Kh2 Qe5+ 58. Kh1 Qd5+ 59. Kh2 Qe5+ 60. Kg2 Qd5+ $14) 55... Qd6+ 56. Kg2 Qd5+ 57. Kg3 Qe5+ 58. Kf3 Qd5+ 59. Kg3 Qe5+ 60. Kg2 Qd5+) 49... Be4 $19 50. Qe3 Qh7+ {Weighted Error Value: White=1.09/Black=0.44} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.20"]
[White "Yakimenko, Alexander A."]
[Black "Novotny, Michal"]
[Result "1/2-1/2"]
[ECO "C19"]
[WhiteElo "2055"]
[BlackElo "2236"]
[Annotator "TA"]
[PlyCount "135"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,135,0,0,-13,-4,-42,0,-60,-52,-50,-73,-68,-53,-373,-365,-405,-16,-320,-323,-330,-271,-351,-299,-385,-237,-235,-235,-243,-235,-237,-235,-251,-251,-360,-277,-437,-437,-437,-437,-437,-437,-437,-437,-922,-907,-885,-874,-1259,-1110,-1015,-1553,-1518,-1450,-1307,-1216,-1790,-1754,-1620,-1648,-1300,-1487,-29979,-29980,-29980,-1278,-1220,-1190,-1316,-1283,-1702,-1281,-1559,-1394,-1507,-1279,-1307,-1300,-1177,-350,-365,-340,-330,0,0,0,0,0,0,0,0,0,0,80,0,0,0,0,0,0,0,5644,0,0,0,5085,5025,29985,29986,29986,29987,29988,29989,29989,29988,29988,29988,29988,29989]} 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 {[%cal Ba2a3,Ba3a4][%mdl 32]} Bxc3+ 6. bxc3 Ne7 7. Nf3 b6 8. Bb5+ Bd7 9. a4 Bxb5 10. axb5 Qd7 11. Qe2 {C19: French: 3 Nc3 Bb4: Main line: 7 Nf3 and 7 a4.} c4 12. Ba3 h6 {[#]} (12... Qxb5 $15 13. Bxe7 Kxe7) 13. O-O $146 ({White should play} 13. Bxe7 $11 Kxe7 14. Rb1) ({Predecessor:} 13. Nh4 Qxb5 14. Qg4 Rg8 15. O-O Qd7 16. Rfb1 Nbc6 17. Qh5 O-O-O 18. Nf3 Nf5 19. Nd2 {½-½ (37) Markovic,M (2365)-Raicevic,V (2415) Banja Vrucica 1991}) 13... Qxb5 $15 14. Bxe7 Kxe7 15. Nh4 g5 16. f4 $2 {[%mdl 8192]} gxh4 $19 17. f5 Nd7 $2 ({Better is} 17... Qe8 $19 18. Qf3 Rh7) 18. Qh5 $2 {[%mdl 8192]} (18. fxe6 $1 $11 fxe6 19. Qg4) 18... Qc6 {[%cal Oh4h3]} 19. Qxh4+ Ke8 {[%cal Be7e8,Be8d8,Bd8c7][%mdl 32]} 20. Qh5 Rh7 21. f6 Kd8 22. Rf3 Kc7 {...Nf8 is the strong threat.} 23. Rg3 Nf8 24. Rg7 Qe8 25. Rg8 a5 26. Qd1 (26. Kf2 {was called for.}) 26... Qc6 27. Qc1 (27. Qh5 $142) 27... Ng6 28. Rg7 Rah8 29. g3 Qe8 30. Rb1 h5 {Strongly threatening ...Rxg7.} 31. h4 (31. Qa3 $142 Qd7 32. Rxh7 Rxh7 33. h4) 31... Rxg7 32. fxg7 Rg8 33. Qh6 Ne7 {Hoping for ...Nf5.} 34. g4 hxg4 35. Rf1 Kb7 36. h5 Nf5 37. Rxf5 exf5 38. Qf6 a4 {aiming for ...a3.} 39. h6 a3 40. Qd6 a2 41. Qa3 f6 (41... Qa8 42. Qe7+ Kb8 43. Qf8+ Kc7 44. Qd6+ Kb7 45. Qe7+ Kc6 46. Qd6+ Kb7 47. Qe7+ $11) (41... Qd8 $142 42. h7 Rxg7 43. h8=Q Qxh8 44. Qe7+ Kc8 45. Qa3 Rg6 46. Qa8+ Kc7 47. Qxh8 a1=Q+ 48. Kg2 Qxc3 49. Qa8 Qxc2+ 50. Kg1 g3 51. Qa7+ Kc6 52. Qa8+ Kb5 53. Qxd5+ Kb4 54. Qg2 Qb1+ 55. Qf1 Qe4 56. Qd1 Qe3+ 57. Kh1 Rh6+ 58. Qh5 Rxh5+ 59. Kg2 Qf2#) 42. Qxa2 fxe5 43. Qa3 exd4 44. Qd6 Qe3+ 45. Kg2 Qf3+ 46. Kg1 Qd1+ 47. Kg2 Qxc2+ 48. Kg3 Qxc3+ $2 (48... f4+ 49. Kxg4 Ka6 50. Qa3+ Kb5 51. Qb4+ Kc6) 49. Kh4 Ka6 (49... Qf3 50. Qd7+ Ka6 51. Qa4+ Kb7 52. Qd7+ Kb8 53. Qd6+ Kb7 54. Qd7+ $11) 50. Qxd5 {[#]} Qc1 $2 51. Kh5 $11 g3 52. Qxg8 {[%mdl 4096] Endgame Intending Qa8+ and mate. KQ-KQ} Qh1+ (52... Qd1+ $2 53. Kg6 Qg4+ 54. Kh7 $18) 53. Kg5 Qc6 {( -> ...g2)} 54. Qf8 (54. Kxf5 $2 g2 55. Qe6 Qxe6+ 56. Kxe6 g1=Q $19) 54... g2 55. Qa3+ Kb7 {[#]} (55... Kb5 $11 56. Qb2+ Kc5 57. Qa3+ Kb5) 56. Qc1 (56. Qg3 $1 $16 Qd5 57. Kf6 (57. h7 f4+ 58. Kxf4 Qd6+ 59. Kf5 Qxg3 $19)) 56... Qf3 {And now ...Qe3+ would win.} 57. h7 Qg3+ 58. Kf6 {The board is on fire.} Qh4+ (58... g1=Q $2 59. Qxg1 Qxg1 60. g8=Q $18) 59. Kg6 Qg4+ $2 {[%mdl 8192]} (59... Qg3+ $11 60. Kf7 Qc7+ 61. Kg6 (61. Kf6 Qd8+ 62. Kg6 Qe8+ 63. Kh6 Qe6+ 64. Kg5 Qe7+ 65. Kg6 Qe8+ 66. Kg5 Qe7+ 67. Kg6 Qe8+ $11) 61... Qg3+ 62. Kf7 Qc7+ 63. Kg6 (63. Kf6 Qd8+ 64. Kxf5 Qd7+ 65. Kf6 Qd6+ 66. Kf7 Qd5+ 67. Kg6 Qe4+ 68. Kh6 Qh4+ 69. Kg6 Qg3+ 70. Kf7 Qf3+ 71. Kg6 Qg4+ 72. Kf6 Qh4+ 73. Kg6 Qg4+ 74. Kh6 Qh4+ 75. Kg6 $11) 63... Qg3+) 60. Kf6 $2 (60. Kf7 $18 Qh5+ 61. Kf8 Qxh7 62. g8=Q Qxg8+ 63. Kxg8) 60... Qh4+ (60... g1=Q $2 61. Qxg1 Qxg1 62. g8=Q $18) 61. Kg6 Qg4+ $2 {[%mdl 8192]} (61... Qg3+ $11 62. Kf7 Qc7+ 63. Kg6 (63. Kf6 Qd8+ 64. Kg6 Qe8+ 65. Kh6 Qe6+ 66. Kg5 Qe7+ 67. Kg6 Qe6+ 68. Kg5 Qe7+ 69. Kg6 Qe6+ 70. Kg5 $11) 63... Qg3+ 64. Kf7 Qc7+ 65. Kg6 (65. Kf6 Qd8+ 66. Kg6 Qe8+ 67. Kg5 Qe7+ 68. Kg6 Qe6+ 69. Kg5 Qe7+ 70. Kg6 Qe6+ 71. Kg5 Qe7+ $11) 65... Qg3+) 62. Kf7 $18 g1=Q 63. Qxg1 {White mates.} Qxg1 64. g8=Q Qxg8+ 65. hxg8=Q Kc6 66. Kf6 Kc5 67. Ke5 d3 68. Qf8+ {[%mdl 32768] Quite a comeback for White.  Weighted Error Value: White=0.93/Black=0.36. An unexpected result.} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.21"]
[White "Babula, Vlastimil"]
[Black "Lacrosse, Marc"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2561"]
[BlackElo "2035"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,61,14,2,-4,0,7,15,8,25,30,35,46,32,45,-83,18,9,25,0,0,-20,-45,-31,-27,-48,5,11,54,49,51,39,57,55,119,102,122,112,114,106,116,-30,133,106,291,305,533,528,631,614]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nb3 Bb6 6. Nc3 Nf6 7. Bg5 h6 {7...0-0 is more fashionable.} 8. Bh4 $1 O-O {C45: Scotch Game.} 9. Bd3 Re8 {[%cal Of6e4] Threatens to win with ...Nxe4!} 10. O-O {[#]} g5 $146 {The position is equal.} ({Predecessor:} 10... d6 11. Kh1 Ne5 12. f4 Ng6 13. Bg3 c6 14. h3 a5 15. a4 d5 16. e5 d4 17. exf6 dxc3 {1-0 (46) Burke,J (2526)-Dragun,K (2594) Greensboro 2018}) 11. Bg3 d6 12. Kh1 Bg4 13. f3 Bh5 14. Na4 {[#]} (14. Qd2 $14) 14... Bg6 ({Black should play} 14... Nxe4 $1 $17 15. Be1 (15. Bxe4 Rxe4 16. Nc3 Re6 $17) 15... Nf6) 15. Nxb6 $11 axb6 16. c4 (16. Bb5 $5 {[%cal Rb3d4]}) 16... Qe7 17. Re1 Nh5 18. Bf2 Qf6 {To avoid Nd4} 19. Qd2 Re7 (19... Ne5 $15 20. Be2 g4) 20. Bf1 Rae8 (20... Ne5 $11 {deserves consideration.}) 21. Nd4 $14 Ne5 22. Be3 Bh7 23. Nb5 g4 (23... Qe6 $14) 24. Bxh6 $16 {aiming for Bg5.} ({Don't do} 24. f4 Nc6 $14) 24... gxf3 25. Bg5 Qg6 {...f6 is the strong threat.} 26. Bxe7 Rxe7 {[#]} 27. Nd4 {[#]} (27. Qf2 $1 $16) 27... fxg2+ $2 (27... Ng3+ $1 $11 28. hxg3 f2) 28. Bxg2 {And now Bh3 would win.} Nxc4 $2 (28... Qg4 $16) 29. Qc2 Nf4 $2 (29... Ne5 30. Nf5 Qg5 31. Nxe7+ Qxe7) 30. Nf5 Re5 31. Rg1 {Weighted Error Value: White=0.21 (precise) /Black=0.46} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.22"]
[White "Dahl, Max"]
[Black "Bochnicka, Vladimir"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "2024"]
[BlackElo "2222"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,86,54,69,69,69,69,72,41,61,48,69,70,64,65,90,83,87,79,145,51,45,45,46,40,48,41,45,45,54,54,54,55,92,25,25,0,0,0,25,31,37,46,95,0,0,-27,-30,-27,-27,-22,-31,-30,-25,-47,-27,-27,-31,-445,-443,-442,-411,-431,-414,-414,-403,-804,-783,-454,-216,-229,-210,-1403,-1414,-1320,-1324,-29976,-29976,-6363,-6183]} 1. d4 f5 2. Bg5 Nf6 3. Bxf6 exf6 4. e3 d5 5. c4 c6 6. Nc3 {A80: Dutch Defence: Unusual White second moves.} Be6 7. Qb3 Qd7 8. cxd5 {White is better.} cxd5 9. Nge2 Bd6 10. g3 ({Don't go for} 10. Nxd5 $2 Bxd5 11. Qc2 Bb4+ 12. Nc3 Nc6 $19) 10... Nc6 {[%cal Bb8c6,Bc6a5,Ba5b3][%mdl 32]} 11. Bg2 Na5 12. Qb5 Qxb5 13. Nxb5 {[#]} Bb4+ $146 (13... Ke7 $142) ({Predecessor:} 13... O-O 14. Nxd6 {1-0 (14) Hoover,M-McConochie,S IECC email 1997}) 14. Nec3 (14. Kd1 $1 $16) 14... Kd7 $14 15. a3 Nb3 {Strongly threatening ...Bxc3+.} 16. Rb1 Bxc3+ 17. Nxc3 (17. bxc3 Na5 $11) 17... Kd6 18. Kd1 {[%cal Be1d1,Bd1c2,Bc2b2][%mdl 32]} a6 19. Kc2 Na5 20. b3 Nc6 {[%cal Of5f4]} 21. Na4 ({White should play} 21. Kd2 $16) 21... f4 $11 22. Kb2 fxe3 23. fxe3 Bf5 24. Rbf1 Bg6 25. Nb6 {[%csl LRa8,LRd5]} Rae8 (25... Rad8 $1 $14) 26. Nxd5 (26. Bxd5 $16 Kc7 27. Nc4) 26... Bf7 $1 27. Nc3 ({But not} 27. Rf5 Be6 28. g4 (28. Rh5 g6 $17) 28... Bxf5 29. gxf5 Ne7 30. Nxe7 Rxe7 $17) (27. Nxf6 $5 gxf6 28. Rxf6+ Ke7 29. Rhf1 $14) 27... Rxe3 28. Re1 Rhe8 29. Rxe3 Rxe3 30. Rd1 {Prevents Rd3.} f5 31. Rd2 b5 32. Bxc6 Kxc6 33. Re2 $2 {[%mdl 8192] This move loses the game for White.} (33. Rf2 $15) 33... Rxe2+ $19 34. Nxe2 {[%mdl 4096] Endgame KB-KN} Kd5 35. Kc3 {[#]} Ke4 36. Nf4 g5 37. Nd3 (37. Nh3 $142 h6 38. Nf2+ Ke3 39. Nd1+ Ke2 40. Kc2) 37... Ke3 38. Ne5 Bd5 (38... Be6 $142 39. Kb4 f4 40. gxf4 gxf4) 39. Nd7 f4 {[%cal Bf5f4,Bf4f3,Bf3f2][%mdl 32]} 40. Nf6 $2 {[#]} (40. gxf4 gxf4 41. Nf6) 40... f3 $1 41. Nxd5+ Ke2 42. Kc2 f2 43. Nc3+ {[#]} Ke1 $1 {Weighted Error Value: White=0.75/Black=0.13 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.23"]
[White "Stanojevic, Ilija"]
[Black "Walter, Ema"]
[Result "1/2-1/2"]
[ECO "A21"]
[WhiteElo "2190"]
[BlackElo "2000"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,98,-15,0,0,0,-3,0,-10,-2,-10,-11,-14,24,3,22,15,26,18,26,0,14,0,3,3,3,3,25,0,43,6,9,0,0,0,0,-35,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,26,0,11,0,0,-84,-85,-75,-36,-70,0,-55,0,-93,0,-79,0,-113,0,-110,0,-70,0,-110,-100,-99,-106,-91,-95,-106,0,0,0,0,0,0,0,0,0]} 1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. dxc3 d6 5. Bg2 Nc6 6. e4 {A21: English Opening: 1...e5 2 Nc3.} Nge7 {[%cal Bg8e7,Be7g6,Bg6f8,Bf8e6][%mdl 32]} 7. Nf3 Be6 8. Qe2 f6 9. Be3 {[#]} Qd7 $146 ({Predecessor:} 9... b6 10. Nh4 Qd7 11. h3 Rb8 12. Rd1 Nd8 13. f4 Qa4 14. b3 Qa5 15. Qd2 Nf7 {½-½ (29) Miezis,N (2555)-Kalinitschew,S (2520) Passau 1997}) 10. h3 {[%cal Bh2h3,Bh3h4,Bh4h5][%mdl 32]} Ng6 11. b3 Qf7 12. h4 a5 13. a4 Nf8 14. h5 Bg4 15. Ng5 Qd7 {[#]} 16. Bf3 Bxf3 17. Nxf3 Ne6 18. Nh4 Ne7 (18... O-O-O $11) 19. Qg4 Ng5 20. Qxd7+ Kxd7 21. Bxg5 fxg5 22. Ng2 h6 23. Ne3 Rhf8 24. Ke2 Rf7 25. Rad1 Raf8 26. Rhf1 Kc8 27. f3 {[%cal Oc4c5]} b6 28. b4 axb4 29. cxb4 {[%cal Oc4c5]} Nc6 30. Nc2 Rd7 31. Ra1 Kb7 32. Rfb1 Rdf7 33. Ra3 (33. Rf1 $1 $11) 33... g4 $1 $17 {[%cal Rf7f3]} 34. Rbb3 Rf6 35. Rd3 R6f7 (35... Nd8 $15) 36. Rdc3 ({White should try} 36. Rdb3 $1 $11) 36... Rf6 (36... Nd8 $15) 37. Re3 {[#]} (37. Rd3 $1 $11) 37... R6f7 (37... Nd8 $1 $17) 38. Rec3 (38. Reb3 $11 {keeps the balance.}) 38... Rf6 (38... Nd8 $17) 39. Kf2 {[#]} (39. Re3 $11) 39... R6f7 ({Better is} 39... Nd8 $1 $17 40. Ne1 Ne6) 40. Rcb3 (40. Ke2 $1 $11) 40... Rf6 (40... Nd8 $17 41. Kg2 Ne6) 41. Kg2 (41. Rc3 $1 $11) 41... R6f7 (41... Nd4 $15 42. Nxd4 exd4) 42. Rc3 (42. Kf2 $1 $11) 42... Nd4 (42... Nd8 {with more complications.} 43. Ne1 Ne6 44. Ra2 Ng5 45. fxg4 Nxe4 46. Rf3 Rxf3 47. Nxf3 Nf6) 43. Nxd4 exd4 44. Rd3 Rxf3 45. Rxf3 Rxf3 ({Black should play} 45... gxf3+ $17 46. Kf2 Ka6) 46. Rxf3 $11 {The position is equal.} gxf3+ 47. Kxf3 $17 {KP-KP} c5 $1 48. b5 Kc7 49. g4 Kb7 {Weighted Error Value: White=0.33/Black=0.25 (precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.11"]
[Round "6.24"]
[White "Kobl, Rudolf"]
[Black "Cornelisse, John"]
[Result "0-1"]
[ECO "E25"]
[WhiteElo "2009"]
[BlackElo "2173"]
[Annotator "TA"]
[PlyCount "50"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,50,0,2,19,0,0,0,0,6,14,0,2,-19,6,-18,-14,-22,-18,-21,-22,-27,-9,-43,-41,-40,-25,-101,-95,-164,-157,-631,-361,-645,-644,-625,-563]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 Nxd5 8. dxc5 f5 9. Nh3 Qa5 {E25: Nimzo-Indian: Sämisch: 5...c5 6 f3 d5 7 cxd5.} 10. e4 fxe4 11. fxe4 {Strongly threatening Qh5+.} Nf6 {Inhibits Qh5+. The position is equal.} 12. Nf2 O-O 13. Be2 {[#]} Nc6 $146 {Prevents Qd4.} ({Predecessor:} 13... Qxc3+ 14. Bd2 Qd4 15. Bb4 Nc6 16. Qxd4 Nxd4 17. Bd1 e5 18. O-O Re8 19. Bc3 Be6 {½-½ (66) Ma,Q (2606)-Yu,Y (2664) Xinghua 2014}) 14. O-O Qxc5 15. Kh1 (15. Qd3 $5 {[%cal Rc1e3]}) 15... Qxc3 16. Bd2 Qd4 17. Qc2 e5 18. Bc3 {This bishop pair is nice.} Qc5 19. Qb3+ Kh8 {[%cal Oc8e6]} 20. Nd3 Qe3 21. Qb2 {[#]} (21. Rfe1 $1 $11 {keeps the balance.}) 21... Bg4 $1 $17 ({Resist} 21... Qxe4 22. Nxe5 Nxe5 23. Bxe5 $14) 22. Bxg4 (22. Rfe1 $17 {keeps fighting.}) 22... Nxg4 $19 ({Stronger than} 22... Qxd3 23. Rfd1 Qe3 24. Re1 $17) 23. Rxf8+ $2 (23. Qd2 $17) 23... Rxf8 24. Qd2 {[#]} (24. h3 Qxd3 25. hxg4) 24... Qxd3 $1 {[%mdl 512]} 25. Qxd3 Nf2+ {Weighted Error Value: White=0.66/Black=0.05 (flawless)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.1"]
[White "Mikes, Jan"]
[Black "Pijpers, Arthur"]
[Result "1/2-1/2"]
[ECO "B20"]
[WhiteElo "2329"]
[BlackElo "2485"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,107,0,0,0,0,0,0,7,5,-12,-10,-18,0,0,0,0,0,-46,-46,-47,-47,-43,-41,-65,-62,-87,-38,-33,-29,-35,-29,-41,-25,-21,-20,-37,-33,-52,-45,-54,-53,-55,0,-46,-22,-36,-22,-16,0,0,-7,-43,-41,-39,-20,-57,-49,-60,-50,-160,-41,-41,-41,-104,-29,-15,-15,-15,-15,-15,-15,-15,-15,-15,0,0,0,0,0,-15,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. b3 Nc6 3. Bb2 e5 4. Bc4 d6 5. Nc3 Nf6 6. d3 {B20: Sicilian: Unusual White 2nd moves.} g6 7. Nge2 Bg7 8. O-O O-O 9. a4 Be6 10. Qd2 {[#]} d5 $146 ({Predecessor:} 10... Nd4 11. Nxd4 exd4 12. Nd5 Nxd5 13. exd5 Bf5 14. c3 dxc3 15. Bxc3 Qh4 16. b4 Bd4 17. bxc5 dxc5 {½-½ (65) Baglan,E (2149)-Atakisi,U (2312) Manavgat 2015}) 11. exd5 Nxd5 12. Nxd5 Bxd5 13. Bxd5 (13. Rae1 $11 {is more appropriate.}) 13... Qxd5 $15 14. Nc3 {[%cal Be2c3,Bc3e4,Be4g5][%mdl 32]} Qd7 15. Ne4 b6 16. f4 f5 17. Ng5 Rfe8 ({But not} 17... h6 $6 18. Nf3 $11) (17... e4 $17 18. Bxg7 Kxg7) 18. fxe5 Bxe5 19. Bxe5 Nxe5 20. Rae1 Re7 21. Nf3 Nxf3+ 22. gxf3 Rae8 23. Rxe7 Qxe7 {[%mdl 4096] Endgame KQR-KQR} 24. Qf4 Qf6 25. Kf2 Qe7 {To avoid Re1. Hoping for ...Qe2+.} 26. Kg1 Qe2 27. Rf2 Qe1+ 28. Kg2 Qe7 29. Rd2 Qf6 30. Rf2 Kg7 31. a5 Re7 32. h4 bxa5 33. Rd2 h6 34. Kh3 {[#]} ({White should try} 34. Rd1 $15) 34... Kh7 (34... g5 $1 $17 {[%cal Rg5f4]} 35. Qg3 g4+ 36. Kg2 (36. fxg4 $2 f4 $19) 36... h5) 35. Rg2 a6 36. c3 ({White should play} 36. Kh2 $15) 36... Qe5 (36... h5 $17 37. d4 cxd4 38. Qxd4 Qc6) 37. Qxe5 $11 Rxe5 {KR-KR. The position is equal.} 38. Ra2 Re3 {[%csl LRd3,LRf3]} 39. Rxa5 Rxf3+ 40. Kg2 Rxd3 41. Rxc5 Kg7 42. Rc7+ $1 Kf6 {[#] Threatens to win with ...f4.} 43. Rc6+ Kf7 44. b4 g5 45. Rxh6 gxh4 46. Rxh4 Rxc3 47. Rh6 Ra3 48. Rb6 Ke7 49. Kf2 f4 50. Rh6 f3 51. Rb6 Kd7 52. Rf6 Rb3 53. Rxa6 Rxb4 54. Kxf3 {Weighted Error Value: White=0.10 (very precise) /Black=0.16 (very precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.2"]
[White "Mirzoev, Azer"]
[Black "Lim, Zhuo Ren"]
[Result "1-0"]
[ECO "A14"]
[WhiteElo "2420"]
[BlackElo "2311"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,75,21,17,16,1,15,12,14,0,8,0,16,9,19,14,23,13,23,14,22,24,42,41,50,41,38,42,60,50,53,53,72,81,97,106,103,89,130,134,122,130,133,122,172,169,222,202,240,233,1139,1128,1491,1377,1836,1007,1598,1531,1316,1287]} 1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. d4 dxc4 7. Qc2 a6 8. a4 Bd7 9. Qxc4 Bc6 10. Bf4 Bd6 {E05: Open Catalan: 5 Nf3 Be7.} 11. Qc1 a5 12. Nc3 Na6 {[%cal Bb8a6,Ba6b4,Bb4d5][%mdl 32] The position is equal.} 13. Rd1 Nb4 14. Bg5 {[%cal Oe2e4]} Be7 15. Qb1 Bxf3 16. Bxf3 c6 {[#]} 17. h4 $146 ({Predecessor:} 17. e4 Nd7 18. Bf4 Nb6 19. h4 h6 20. Qc1 f5 21. d5 exd5 22. exd5 N6xd5 23. Nxd5 cxd5 24. Bxd5+ Nxd5 {½-½ (52) Gritsak,O (2475)-Weglarz,L (2375) Krynica 1998}) 17... Nd7 18. Bf4 Nd5 19. Bd2 Bf6 20. e4 {[%cal Be2e4,Be4e5][%mdl 32]} Nb4 21. e5 Be7 22. Qe4 $36 {[%mdl 2048] White has good play.} Qb6 23. Kg2 Rfd8 24. Rac1 Nf8 25. Be3 Nd5 26. Nxd5 cxd5 27. Qc2 {White is more active.} Rd7 (27... Rdb8 $142) 28. Rd3 $16 Bb4 {[#]} 29. h5 $1 {Prevents Ng6.} h6 30. Be2 Rdd8 (30... Qd8 $16) 31. Rdd1 $18 Nd7 (31... Be7 {might work better.} 32. Bb5 Rdb8) 32. Bb5 Qa7 33. Qe2 Nb8 $2 (33... b6 34. f4 Nf8) 34. Qg4 {White is clearly winning.} Kf8 35. Rc7 {[%cal Oe3h6] White threatens Bxh6! and mate.} Be7 {[#]} 36. Rxe7 $1 {[%cal Oe3h6][%mdl 512] Threatening mate with Bxh6!} Kxe7 (36... Nc6 37. Rxf7+) 37. Qxg7 {Qf6+ would kill now.} Nc6 38. Bxh6 {Weighted Error Value: White=0.05 (flawless) /Black=0.16 (very precise)} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.3"]
[White "Carlsson, Ludvig"]
[Black "Jurcik, Marian"]
[Result "1/2-1/2"]
[ECO "B08"]
[WhiteElo "2355"]
[BlackElo "2397"]
[Annotator "TA"]
[PlyCount "41"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,20,44,62]} 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 O-O 6. O-O Bg4 7. Be3 Nc6 8. d5 Bxf3 9. Bxf3 Ne5 10. Be2 c6 {[#]} {Predecessor:} 11. dxc6 $146 {B08: Pirc Defence: Classical System.} bxc6 12. f4 Ned7 13. Qd2 Rb8 14. b3 Qa5 15. Rad1 Rfe8 16. Bf3 e5 17. Na4 Qxd2 18. Rxd2 exf4 19. Bxf4 Nxe4 20. Bxe4 Rxe4 21. Rxd6 {0-1 (48) Babazada,K (2429)-Efimenko,Z (2597) Warsaw 2021} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.4"]
[White "Vojta, Jakub"]
[Black "Kozak, Antoni"]
[Result "0-1"]
[ECO "B19"]
[WhiteElo "2289"]
[BlackElo "2356"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 31,90,0,12,0,0,0,9,10,21,0,0,0,-8,0,0,0,0,-23,-13,-44,-46,-49,-57,-54,-54,-102,-92,-83,-80,-100,-90,-131,-19,-29,-24,-37,-24,-32,0,-139,-134,-142,-122,-235,-220,-236,-216,-259,-237,-489,-474,-299,-299,-584,-753,-720,-713,-1550,-1541,-1310,-1208]} 1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bd2 Ngf6 12. O-O-O Be7 13. Ne4 Nxe4 14. Qxe4 Nf6 15. Qe2 Qd5 16. c4 Qe4 $1 17. Rde1 {B19: Classical Caro-Kann: 4...Bf5 main line.} Qxe2 18. Rxe2 b5 19. Ne5 {The position is equal.} bxc4 {[#]} 20. f4 $146 {[%cal Bf2f4,Bf4f5][%mdl 32]} ({Predecessor:} 20. Nxc6 Rc8 21. Nxe7 Kxe7 22. Bb4+ Kd7 23. Bc5 Rc6 24. Rh3 Ra6 25. a3 Rc8 26. Rc2 Ra4 {½-½ (26) Ginzborsky,L (2241)-Altanoch,G (2227) ICCF email 2012}) 20... Rc8 21. Nxc4 {[%cal Of4f5]} c5 22. d5 Nxd5 23. f5 Nc7 ({Don't take} 23... exf5 24. Nd6+ Kd7 25. Nxc8 Rxc8 26. Re5 $16) 24. Bf4 O-O 25. Bxc7 Rxc7 26. fxe6 fxe6 27. Rxe6 Rf2 28. Rhe1 (28. g4 $15) 28... Bg5+ $17 29. Kb1 Rxg2 30. Re8+ Kh7 {Strongly threatening ...Rh2.} 31. Ne5 ({White should try} 31. Rf8) 31... Bf6 (31... Re7 $1 $17 {[%cal Re7e8]} 32. Rxe7 Bxe7) 32. Ng6 $1 $11 Rxg6 (32... Rxb2+ {is a self mate.} 33. Kc1) 33. hxg6+ Kxg6 {[%mdl 4096] Endgame KRR-KRB} 34. Rg1+ Kf7 35. Re2 {[#]} (35. Rh8 $1 $11 {remains equal.}) 35... g5 $1 $17 {[%cal Bg7g5,Bg5g4][%mdl 32]} 36. Kc2 h5 {[%cal Bh6h5,Bh5h4,Bh4h3][%mdl 32]} 37. b3 {[#]} (37. Rd2 $17 {was worth a try.}) 37... g4 $1 $19 38. Kd3 Kg6 39. Kc4 Bd4 40. Rgg2 (40. Rh1 {keeps fighting.}) 40... Kf5 41. b4 h4 42. bxc5 $2 (42. Re4 Kxe4 43. Rxg4+ Ke3 44. Rxh4) 42... Bxc5 {White must now prevent ...h3. Black is clearly winning.} 43. Kd5 g3 44. Re5+ Kf4 {And now ...Bf2 would win.} 45. Rge2 h3 {Weighted Error Value: White=0.54/Black=0.09 (flawless)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.5"]
[White "Urkedal, Frode Olav Olsen"]
[Black "Kulhanek, Tomas"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2553"]
[BlackElo "2323"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,69,53,64,64,102,49,68,71,76,0,99,80,83,79,82,72,75,66,69,81,101,19,77,71,42,53,88,92,163,166,243,273,342,288,464,275,763,661,613,629,1252,1238,1159,1079,29971,5694,2439,1424]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 d6 8. Be2 Nxd4 9. Bxd4 O-O 10. O-O Be6 11. Qd2 Qa5 12. Rad1 Rfc8 13. b3 {B38: Sicilian: Maroczy Bind with 5...Bg7 and 7...0-0.} a6 {[%cal Ob7b5]} 14. Qb2 $5 {[%mdl 4] [#] Leaves trodden paths.} ({Better is} 14. f4 $16) 14... Ne8 $146 ({Predecessor:} 14... b5 15. b4 Qc7 16. cxb5 axb5 17. Bxb5 Bc4 18. Rfe1 e5 19. Be3 Qb7 20. Bxc4 Rxc4 {0-1 (43) Gil Gonzalez,J (2355)-Cortes Bueno,J Spain 1993}) 15. Bxg7 {White is slightly better.} Nxg7 16. f4 (16. a4 $16) 16... f6 (16... b5 $1 $11) 17. Nd5 Bxd5 18. Rxd5 Rc5 19. Rd2 {Black must now prevent b4. White is more active.} Qb6 {[#]} 20. Kh1 $1 {[%cal Oe4e5]} a5 21. a3 Rcc8 22. Rf3 (22. Qc3 $16) 22... Qc6 (22... Ne6 $11 {keeps the balance.}) 23. Rd5 (23. f5 {feels hotter.} Qxe4 24. Bd3 Qe5 25. Qb1 Nxf5 26. Re2) 23... e6 24. Rd4 Rf8 25. Qd2 Ne8 (25... Rad8 $16 {is a better defense.}) 26. f5 $18 e5 (26... Rf7 $142 27. c5 (27. fxe6 Re7 $14) 27... Qxc5) 27. Rd5 g5 28. h4 h6 $2 (28... a4 29. hxg5 fxg5 30. Qxg5+ Kh8) 29. Rg3 (29. c5 $142) 29... Ng7 $2 (29... Rf7 30. Bh5 (30. hxg5 hxg5 31. Rh3 Rd8 $16) 30... Rg7 31. Bxe8 (31. Rxa5 Rd8 $18) 31... Rxe8 32. Qxa5 Rf8) 30. hxg5 hxg5 31. c5 {[%cal Bc4c5,Bc5d6][%mdl 32] [#] And now Bc4 would win.} Rfd8 32. Bc4 {[%cal Rd5d6]} Kf8 33. Rh3 Ne8 34. Qd1 {Threatening mate with Rh8+.} Rd7 35. cxd6 {Weighted Error Value: White=0.30/Black=0.84} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.6"]
[White "Neuman, Petr"]
[Black "Mannion, Stephen R"]
[Result "0-1"]
[ECO "C44"]
[WhiteElo "2402"]
[BlackElo "2267"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,64,-29,-15,-10,-87,-64,-70,-61,-56,7,10,29,-13,-7,-12,0,-7,-8,0,0,-22,-24,-17,-15,-8,0,-8,0,0,0,0,0,0,0,0,0,-26,-17,-24,-14,-18,0,-14,0,0,0,-1377,-1344,-1289,-1256]} 1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d3 d5 5. Nbd2 a5 6. Be2 Bc5 7. O-O O-O 8. b3 Re8 $1 {8...Re8 scores better than 8...Qe7.} 9. a3 d4 {C44: Ponziani Opening and Scotch Gambit.} 10. c4 (10. cxd4 $11 Nxd4 11. Bb2) 10... Nd7 {[#] Black is much more active. White has bad knights.} 11. Ne1 $146 ({Predecessor:} 11. Kh1 Be7 12. Ng1 Nc5 13. g3 f5 14. f3 f4 15. Rf2 Bg5 16. Rg2 Rf8 17. Nf1 {0-1 (48) Dragojlovic,A (2288)-Savanovic,A (2434) Venice 2018}) 11... Nf8 {Black is slightly better.} 12. g3 f5 ({Black should play} 12... Bh3 $15 13. Ng2 Nd7) 13. exf5 $11 Bxf5 14. Bf3 (14. Bh5 $142) 14... Qd7 15. Ne4 Be7 16. Nc2 Ne6 17. Re1 Nc5 18. Rb1 Nxe4 19. Bxe4 Bxe4 20. Rxe4 Bf6 21. Bd2 Ne7 {[%cal Bc6e7,Be7f5,Bf5d6][%mdl 32]} 22. a4 b6 23. Qf3 Nf5 24. Qg4 g6 25. Rbe1 Qf7 26. R4e2 Nd6 {[%cal Oe5e4]} 27. Qf3 {Inhibits e4.} Bg7 28. Qc6 e4 {[%cal Be5e4,Be4d3,Bd3d2][%mdl 32]} 29. Bf4 exd3 30. Rxe8+ Rxe8 31. Bxd6 $2 {[%mdl 8192] [#]} (31. Rxe8+ $11 Qxe8 32. Qxe8+ Nxe8 33. Ne1) 31... Rxe1+ $19 32. Nxe1 d2 {Weighted Error Value: White=0.32/Black=0.09 (flawless)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.7"]
[White "Haring, Filip"]
[Black "Unneland, Mathias"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "2398"]
[BlackElo "2262"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,47,13,0,-3,-6,0,7,0,19,0,0,0,14,17,24,17,27,25,19,15,29,7,39,8,55,52,62,64,89,70,545,546,29993,29994]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. Bd3 d5 7. exd5 cxd5 8. O-O Be7 9. h3 {C45: Scotch Game.} O-O 10. Re1 Rb8 11. b3 {[#] The position is equal.} c5 $146 ({Predecessor:} 11... Rb6 12. Nd2 Bb7 13. Nf3 Ne4 14. Be3 Rg6 15. Bxa7 Bd6 16. c4 Qc8 17. Kf1 Qa8 18. cxd5 Bxd5 {0-1 (36) Jobava,B (2603)-Ponkratov,P (2624) Tornelo INT 2021}) 12. Bb2 Bb7 13. Nd2 Nd7 14. Nf3 Bf6 15. Bxf6 Qxf6 16. Qe2 Rbd8 17. a4 Qc3 18. Qd2 Qf6 19. Qg5 Qc3 (19... Qxg5 $11 20. Nxg5 h6) 20. Rad1 c4 21. Bf5 $40 {[%mdl 128] Hoping for Qe7. White has some attack. White is more active.} cxb3 22. cxb3 {Threatens to win with Qe7.} Nc5 $2 {[%mdl 8192]} ({Black should try} 22... Nf6 $1 $14) 23. Rc1 $18 Qa5 {[#]} 24. Bxh7+ $1 {[%mdl 512] Weighted Error Value: White=0.06 (flawless) /Black=1.04} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.8"]
[White "Cholleti Sahajasri"]
[Black "Czerw, Dawid"]
[Result "0-1"]
[ECO "A57"]
[WhiteElo "2235"]
[BlackElo "2396"]
[Annotator "RC"]
[PlyCount "92"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:09:24]} Nf6 {[%emt 0:00:06]} 2. c4 {[%emt 0:00:32]} c5 {[%emt 0:00:04]} 3. d5 {[%emt 0:00:15]} b5 {[%emt 0:00:05]} 4. Bg5 {[%emt 0:00:46]} bxc4 {[%emt 0:00:22]} 5. Nd2 {[%emt 0:04:50]} Qa5 {[%emt 0:17:56]} 6. Bxf6 {[%emt 0:00:32]} gxf6 {[%emt 0:00:45]} 7. Qc2 {[%emt 0:02:52]} d6 {[%emt 0:02:59]} 8. e4 {[%emt 0:09:22]} Nd7 {[%emt 0:00:50]} 9. Bxc4 {[%emt 0:07:25]} Nb6 {[%emt 0:06:01]} 10. Be2 {[%emt 0:01:30]} Bh6 {[%emt 0:01:06]} 11. Ngf3 {[%emt 0:02:13]} Ba6 {[%emt 0:01:17]} 12. Bxa6 {[%emt 0:10:34]} Qxa6 {[%emt 0:01:37]} 13. b3 {[%emt 0:00:56]} Rb8 {[%emt 0:05:21]} 14. Qd1 {[%emt 0:17:53]} f5 {[%emt 0:08:56]} 15. exf5 {[%emt 0:01:51]} Qd3 {[%emt 0:03:02]} 16. Qb1 {[%emt 0:13:09]} Qc3 {[%emt 0:07:05]} 17. Qd1 {[%emt 0:04:19]} Bxd2+ {[%emt 0:02:39]} 18. Nxd2 {[%emt 0:00:03]} Qe5+ {[%emt 0:00:08]} 19. Kf1 {[%emt 0:00:04]} Qxf5 {[%emt 0:02:25]} 20. Qe2 {[%emt 0:02:29]} Nxd5 {[%emt 0:06:05]} 21. Nc4 {[%emt 0:00:18]} O-O {[%emt 0:01:18]} 22. Re1 {[%emt 0:02:55]} Rbe8 {[%emt 0:08:52]} 23. h4 {[%emt 0:00:21]} Nf4 {[%emt 0:02:00]} 24. Qf3 {[%emt 0:02:34]} Qd3+ {[%emt 0:00:23]} 25. Qxd3 {[%emt 0:00:06]} Nxd3 {[%emt 0:00:04]} 26. Re3 {[%emt 0:00:07]} Nb4 {[%emt 0:00:47]} 27. Ke2 {[%emt 0:02:49]} f6 {[%emt 0:01:47]} 28. Rd1 {[%emt 0:02:02]} Nc6 {[%emt 0:02:12]} 29. Kf1 {[%emt 0:00:12]} Rd8 {[%emt 0:00:55]} 30. f4 {[%emt 0:01:20]} Kf7 {[%emt 0:02:54]} 31. Rd5 {[%emt 0:01:12]} Rg8 {[%emt 0:01:10]} 32. a3 {[%emt 0:00:14]} Rb8 {[%emt 0:04:29]} 33. Kf2 {[%emt 0:00:47]} a5 {[%emt 0:02:40]} 34. Rd1 {[%emt 0:00:41]} Rgd8 {[%emt 0:02:07]} 35. Rd5 {[%emt 0:00:17]} Rd7 {[%emt 0:02:05]} 36. g4 {[%emt 0:00:43]} Rdb7 {[%emt 0:01:23]} 37. Rdd3 {[%emt 0:00:27]} a4 {[%emt 0:01:18]} 38. bxa4 {[%emt 0:00:06]} Ra7 {[%emt 0:01:49]} 39. Re4 {[%emt 0:00:53]} f5 {[%emt 0:01:33]} 40. gxf5 {[%emt 0:00:11]} Nd4 {[%emt 0:00:24]} 41. Ne3 {[%emt 0:08:38]} Rb2+ {[%emt 0:01:38]} 42. Kf1 {[%emt 0:00:13]} Rxa4 {[%emt 0:05:30]} 43. f6 {[%emt 0:06:58]} e6 {[%emt 0:00:21]} 44. f5 {[%emt 0:00:27]} e5 {[%emt 0:01:00]} 45. Nd5 {[%emt 0:00:10]} Rc4 {[%emt 0:01:17]} 46. Rg4 {[%emt 0:04:31]} Rc1+ {[%emt 0:00:06]} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.9"]
[White "Plischki, Sebastian"]
[Black "Dev, Shah"]
[Result "1-0"]
[ECO "A33"]
[WhiteElo "2375"]
[BlackElo "2243"]
[Annotator "ChessBase"]
[PlyCount "153"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. c4 {[%emt 0:00:05]} c5 {[%emt 0:01:03]} 2. Nf3 {[%emt 0:00:14]} Nf6 {[%emt 0:00:13]} 3. Nc3 {[%emt 0:00:17]} Nc6 {[%emt 0:00:06]} 4. d4 {[%emt 0:00:16]} cxd4 {[%emt 0:00:10]} 5. Nxd4 {[%emt 0:00:06]} e6 {[%emt 0:00:12]} 6. g3 {[%emt 0:00:18]} Qb6 {[%emt 0:00:09]} 7. Nb3 {[%emt 0:00:22]} Ne5 {[%emt 0:03:35]} 8. e4 {[%emt 0:00:46]} Bb4 {[%emt 0:02:49]} 9. Qe2 {[%emt 0:00:26]} d6 {[%emt 0:27:08]} 10. Bd2 {[%emt 0:01:51]} Bd7 {[%emt 0:04:41]} 11. f4 {[%emt 0:05:32]} Ng6 {[%emt 0:01:40]} 12. e5 {[%emt 0:05:25]} dxe5 {[%emt 0:02:41]} 13. fxe5 {[%emt 0:00:06]} Bc6 {[%emt 0:04:13]} 14. c5 {[%emt 0:08:36]} Qc7 {[%emt 0:07:34]} 15. exf6 {[%emt 0:03:33]} Bxc3 {[%emt 0:00:16]} 16. Bxc3 {[%emt 0:00:12]} Bxh1 {[%emt 0:00:07]} 17. fxg7 {[%emt 0:00:22]} Rg8 {[%emt 0:00:07]} 18. O-O-O {[%emt 0:03:15]} Rd8 {[%emt 0:01:51]} 19. Re1 {[%emt 0:08:29]} Bd5 {[%emt 0:08:41]} 20. Qf2 {[%emt 0:09:18]} Rd7 {[%emt 0:10:05]} 21. Kb1 {[%emt 0:01:21]} Ne7 {[%emt 0:11:54]} 22. Nc1 {[%emt 0:05:11]} f5 {[%emt 0:01:05]} 23. Bb5 {[%emt 0:05:00]} Be4+ {[%emt 0:01:14]} 24. Ka1 {[%emt 0:07:01]} Nc6 {[%emt 0:00:53]} 25. Bc4 {[%emt 0:01:34]} Re7 {[%emt 0:01:29]} 26. Nd3 {[%emt 0:02:32]} Kd7 {[%emt 0:05:51]} 27. Nf4 {[%emt 0:02:31]} Nd8 {[%emt 0:00:01]} 28. Nh5 {[%emt 0:13:34]} Kc8 {[%emt 0:00:19]} 29. Nf6 {[%emt 0:02:06]} Rexg7 {[%emt 0:02:44]} 30. Nxe4 {[%emt 0:00:21]} fxe4 {[%emt 0:00:05]} 31. Bxg7 {[%emt 0:00:11]} Rxg7 {[%emt 0:00:33]} 32. Rxe4 {[%emt 0:00:59]} Rg5 {[%emt 0:01:11]} 33. Bxe6+ {[%emt 0:02:02]} Nxe6 {[%emt 0:00:07]} 34. Rxe6 {[%emt 0:00:05]} Qxc5 {[%emt 0:00:06]} 35. Re8+ {[%emt 0:02:39]} Kc7 {[%emt 0:02:25]} 36. Qf7+ {[%emt 0:00:14]} Kb6 {[%emt 0:00:07]} 37. Re6+ {[%emt 0:06:24]} Ka5 {[%emt 0:00:01]} 38. Re1 {[%emt 0:00:39]} Qb4 {[%emt 0:01:06]} 39. Qc7+ {[%emt 0:02:13]} Ka6 {[%emt 0:00:55]} 40. Re6+ {[%emt 0:00:49]} b6 {[%emt 0:00:00]} 41. a3 {[%emt 0:33:16]} Qb3 {[%emt 0:06:08]} 42. Qc8+ {[%emt 0:00:00]} Ka5 {[%emt 0:00:19]} 43. Qd7 {[%emt 0:00:00]} Ka6 {[%emt 0:02:03]} 44. Re4 {[%emt 0:00:00]} Rb5 {[%emt 0:01:41]} 45. Qd4 {[%emt 0:00:00]} Rd5 {[%emt 0:01:11]} 46. Qc4+ {[%emt 0:00:00]} Qxc4 {[%emt 0:00:21]} 47. Rxc4 {[%emt 0:00:00]} Rd7 {[%emt 0:06:12]} 48. Kb1 {[%emt 0:00:00]} Kb5 {[%emt 0:00:18]} 49. b3 {[%emt 0:00:00]} Rf7 {[%emt 0:04:51]} 50. a4+ {[%emt 0:00:00]} Ka5 {[%emt 0:00:03]} 51. Rh4 {[%emt 0:00:00]} b5 {[%emt 0:05:47]} 52. Kc2 {[%emt 0:00:00]} Rd7 {[%emt 0:01:40]} 53. axb5 {[%emt 0:00:00]} Kxb5 {[%emt 0:00:05]} 54. Kc3 {[%emt 0:00:00]} a5 {[%emt 0:01:12]} 55. Rh5+ {[%emt 0:00:00]} Kb6 {[%emt 0:00:05]} 56. g4 {[%emt 0:00:00]} Rf7 {[%emt 0:03:17]} 57. h3 {[%emt 0:00:00]} Rd7 {[%emt 0:00:05]} 58. Kc4 {[%emt 0:00:00]} Rc7+ {[%emt 0:00:45]} 59. Kd4 {[%emt 0:00:00]} Ra7 {[%emt 0:00:26]} 60. Ke4 {[%emt 0:00:00]} Rb7 {[%emt 0:01:32]} 61. Rd5 {[%emt 0:00:00]} Ka6 {[%emt 0:00:31]} 62. Rd3 {[%emt 0:00:00]} Kb5 {[%emt 0:02:18]} 63. h4 {[%emt 0:00:14]} Kb4 {[%emt 0:00:20]} 64. g5 {[%emt 0:01:37]} Rf7 {[%emt 0:01:07]} 65. h5 {[%emt 0:00:46]} Rf1 {[%emt 0:00:32]} 66. Rg3 {[%emt 0:00:23]} Rh1 {[%emt 0:00:40]} 67. g6 {[%emt 0:02:34]} Rh4+ {[%emt 0:00:07]} 68. Kf3 {[%emt 0:00:04]} hxg6 {[%emt 0:00:11]} 69. hxg6 {[%emt 0:00:05]} Rh8 {[%emt 0:00:50]} 70. Kg4 {[%emt 0:00:10]} Rg8 {[%emt 0:00:34]} 71. Kg5 {[%emt 0:00:07]} Ka3 {[%emt 0:00:21]} 72. Kf6 {[%emt 0:00:22]} Rb8 {[%emt 0:00:12]} 73. g7 {[%emt 0:00:16]} Rb6+ {[%emt 0:00:09]} 74. Kf7 {[%emt 0:01:02]} Rb7+ {[%emt 0:00:04]} 75. Kg6 {[%emt 0:00:08]} Rb8 {[%emt 0:00:06]} 76. Kh7 {[%emt 0:00:44]} Rb7 {[%emt 0:00:05]} 77. Kh8 {[%emt 0:00:05]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.10"]
[White "Hrabusa, Matej"]
[Black "Grutter, Tim"]
[Result "1-0"]
[ECO "E92"]
[WhiteElo "2369"]
[BlackElo "2194"]
[Annotator "ChessBase"]
[PlyCount "155"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:04]} Nf6 {[%emt 0:00:04]} 2. Nf3 {[%emt 0:00:06]} g6 {[%emt 0:00:05]} 3. c4 {[%emt 0:00:09]} Bg7 {[%emt 0:00:06]} 4. Nc3 {[%emt 0:00:06]} d6 {[%emt 0:00:09]} 5. e4 {[%emt 0:00:11]} O-O {[%emt 0:00:07]} 6. Be2 {[%emt 0:00:16]} e5 {[%emt 0:00:09]} 7. Be3 {[%emt 0:00:11]} exd4 {[%emt 0:01:40]} 8. Nxd4 {[%emt 0:00:07]} Re8 {[%emt 0:00:12]} 9. f3 {[%emt 0:00:08]} c6 {[%emt 0:00:22]} 10. Bf2 {[%emt 0:00:22]} d5 {[%emt 0:00:40]} 11. exd5 {[%emt 0:00:13]} cxd5 {[%emt 0:00:16]} 12. O-O {[%emt 0:00:14]} Nc6 {[%emt 0:01:20]} 13. c5 {[%emt 0:00:21]} Nxd4 {[%emt 0:17:13]} 14. Bxd4 {[%emt 0:01:03]} Bd7 {[%emt 0:08:38]} 15. Qd2 {[%emt 0:03:07]} Qa5 {[%emt 0:17:55]} 16. Rad1 {[%emt 0:07:05]} Rad8 {[%emt 0:04:42]} 17. Kh1 {[%emt 0:03:45]} Kh8 {[%emt 0:13:07]} 18. Rfe1 {[%emt 0:09:49]} Be6 {[%emt 0:03:34]} 19. Qf4 {[%emt 0:07:00]} Nh5 {[%emt 0:04:37]} 20. Bxg7+ {[%emt 0:00:53]} Kg8 {[%emt 0:04:18]} 21. Qd4 {[%emt 0:13:58]} Nxg7 {[%emt 0:00:05]} 22. Bb5 {[%emt 0:01:32]} Rf8 {[%emt 0:02:22]} 23. b4 {[%emt 0:01:40]} Qc7 {[%emt 0:00:17]} 24. Bd3 {[%emt 0:01:31]} a6 {[%emt 0:01:13]} 25. a4 {[%emt 0:10:24]} Qd7 {[%emt 0:08:00]} 26. b5 {[%emt 0:04:20]} axb5 {[%emt 0:00:52]} 27. axb5 {[%emt 0:00:12]} Bf5 {[%emt 0:01:37]} 28. Bxf5 {[%emt 0:07:24]} Nxf5 {[%emt 0:00:01]} 29. Qxd5 {[%emt 0:00:23]} Qc7 {[%emt 0:01:30]} 30. Qc4 {[%emt 0:01:13]} Rxd1 {[%emt 0:00:56]} 31. Rxd1 {[%emt 0:02:53]} Rc8 {[%emt 0:01:41]} 32. Ne4 {[%emt 0:06:35]} Ne3 {[%emt 0:02:27]} 33. Nf6+ {[%emt 0:00:48]} Kf8 {[%emt 0:00:48]} 34. Qh4 {[%emt 0:01:56]} Kg7 {[%emt 0:01:25]} 35. Rc1 {[%emt 0:05:23]} Qe5 {[%emt 0:02:27]} 36. Ne4 {[%emt 0:01:31]} Nxg2 {[%emt 0:00:33]} 37. Qh3 {[%emt 0:03:34]} f5 {[%emt 0:00:34]} 38. Ng5 {[%emt 0:00:48]} h6 {[%emt 0:01:34]} 39. Qxh6+ {[%emt 0:00:35]} Kxh6 {[%emt 0:00:27]} 40. Nf7+ {[%emt 0:00:06]} Kg7 {[%emt 0:00:15]} 41. Nxe5 {[%emt 0:30:05]} Nf4 {[%emt 0:31:30]} 42. c6 {[%emt 0:07:37]} bxc6 {[%emt 0:00:00]} 43. Nxc6 {[%emt 0:00:00]} Rc7 {[%emt 0:00:00]} 44. Ra1 {[%emt 0:00:00]} Kf7 {[%emt 0:00:00]} 45. Rb1 {[%emt 0:00:00]} Ne6 {[%emt 0:00:00]} 46. b6 {[%emt 0:00:00]} Rb7 {[%emt 0:00:00]} 47. Na5 {[%emt 0:00:00]} Rb8 {[%emt 0:00:00]} 48. b7 {[%emt 0:00:00]} Nd8 {[%emt 0:00:00]} 49. Rc1 {[%emt 0:00:00]} Ke6 {[%emt 0:00:00]} 50. Rc8 {[%emt 0:00:00]} Nxb7 {[%emt 0:00:51]} 51. Rxb8 {[%emt 0:00:00]} Nxa5 {[%emt 0:00:03]} 52. Rb6+ {[%emt 0:00:00]} Kf7 {[%emt 0:00:10]} 53. Kg2 {[%emt 0:00:00]} Nc4 {[%emt 0:00:07]} 54. Ra6 {[%emt 0:00:00]} Ne3+ {[%emt 0:03:06]} 55. Kf2 {[%emt 0:00:00]} f4 {[%emt 0:01:53]} 56. Ke2 {[%emt 0:00:00]} g5 {[%emt 0:01:38]} 57. Kd3 {[%emt 0:01:00]} Nf1 {[%emt 0:00:49]} 58. Ra2 {[%emt 0:02:20]} Ne3 {[%emt 0:00:21]} 59. Ke4 {[%emt 0:00:49]} Kg6 {[%emt 0:00:20]} 60. h4 {[%emt 0:00:24]} Nc4 {[%emt 0:00:42]} 61. hxg5 {[%emt 0:00:28]} Kxg5 {[%emt 0:00:06]} 62. Rg2+ {[%emt 0:00:08]} Kf6 {[%emt 0:00:08]} 63. Kxf4 {[%emt 0:00:09]} Ne5 {[%emt 0:00:04]} 64. Ra2 {[%emt 0:00:23]} Nd3+ {[%emt 0:00:17]} 65. Ke3 {[%emt 0:00:24]} Ne5 {[%emt 0:02:04]} 66. Ke4 {[%emt 0:00:29]} Nc4 {[%emt 0:00:29]} 67. Ra6+ {[%emt 0:00:55]} Ke7 {[%emt 0:00:25]} 68. Kf5 {[%emt 0:00:56]} Ne3+ {[%emt 0:00:12]} 69. Kg5 {[%emt 0:00:18]} Kf7 {[%emt 0:00:15]} 70. f4 {[%emt 0:00:17]} Nc4 {[%emt 0:00:35]} 71. f5 {[%emt 0:00:34]} Ne5 {[%emt 0:00:25]} 72. Ra7+ {[%emt 0:00:24]} Ke8 {[%emt 0:01:02]} 73. Kf6 {[%emt 0:00:29]} Nc6 {[%emt 0:00:14]} 74. Ra8+ {[%emt 0:00:14]} Kd7 {[%emt 0:00:21]} 75. Kg7 {[%emt 0:00:11]} Nd4 {[%emt 0:00:12]} 76. f6 {[%emt 0:00:13]} Nf5+ {[%emt 0:00:17]} 77. Kg6 {[%emt 0:00:31]} Ke6 {[%emt 0:00:48]} 78. Ra6+ {[%emt 0:00:13]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.11"]
[White "Mach, Ondrej"]
[Black "Sorm, Daniel"]
[Result "0-1"]
[ECO "D38"]
[WhiteElo "1893"]
[BlackElo "2348"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,80,-6,-7,-16,-16,-19,-11,-26,-20,-30,-18,-48,-41,-39,-6,-11,10,12,7,-19,-28,-29,-22,-26,0,0,0,0,0,0,0,0,0,0,7,5,14,0,0,-8,-8,-8,-8,-8,-8,-10,-18,-20,0,-102,-105,-695,-688,-912,-888,-935,-5523,-5369,-5216,-4848,-5069,-2616,-2149,-1860,-1400]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 h6 6. Bxf6 Qxf6 7. a3 Bxc3+ 8. bxc3 O-O 9. e3 c5 10. Bd3 {D38: Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} dxc4 11. Bxc4 b6 12. O-O {The position is equal.} Bb7 {[#]} 13. Ne5 $146 ({Predecessor:} 13. Re1 Rd8 14. Qe2 Nd7 15. e4 Rac8 16. Rac1 cxd4 17. cxd4 Qe7 18. Qb2 Nf6 19. Bd3 Rxc1 20. Qxc1 {0-1 (42) Oetting,H-Ball,J freechess.de 2019}) 13... Qg5 {[%csl Gb7][%cal Rg5g2] [#]} 14. Qg4 Qxg4 15. Nxg4 Nd7 16. f3 Rfc8 17. Bb5 Bc6 18. Bxc6 Rxc6 19. Ne5 Nxe5 20. dxe5 $11 {[%mdl 4096] Endgame KRR-KRR} Rd8 21. Rfd1 {To avoid Rd3} Rcc8 {[%cal Bc6c8,Bc8d8,Bd8d7][%mdl 32]} 22. c4 Kf8 23. Kf2 Ke7 24. Rxd8 Rxd8 {KR-KR} 25. Ke2 {Inhibits Rd2+.} Rd7 26. a4 Kd8 27. f4 h5 28. g4 hxg4 29. Rg1 g6 30. Rxg4 Kc7 31. Rg1 Kb7 {Threatens to win with ...Ka6.} 32. a5 $1 bxa5 {[%cal Bb6a5,Ba5a4,Ba4a3,Ba3a2][%mdl 32]} 33. Rb1+ {[#]} (33. Rd1 $1 $11 Rc7 34. Kf3) 33... Ka6 $1 $17 {aiming for ...a4.} 34. Rb5 $2 {[%mdl 8192] This move loses the game for White.} (34. Ra1 $17) 34... a4 $19 {...Rb7 is the strong threat. Black is clearly winning.} 35. Rxc5 a3 {White must now prevent ...a2.} 36. Rc6+ Ka5 37. Rc5+ Ka4 38. Rc6 a5 39. Rd6 Rb7 {( -> ...a2)} 40. Rd1 a2 {Weighted Error Value: White=0.42/Black=0.03 (flawless)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.12"]
[White "Nielsen, Andre"]
[Black "Van Osch, Mees"]
[Result "0-1"]
[ECO "C11"]
[WhiteElo "2232"]
[BlackElo "2364"]
[Annotator "TA"]
[PlyCount "188"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,188,33,21,32,-6,-11,-6,-14,-22,-9,-10,-16,-15,-15,-17,0,-55,0,-10,-4,-17,-20,-19,-17,-14,-10,-13,-14,-16,-10,-14,-14,-8,0,-11,-19,-45,-21,-45,-38,-42,-40,-45,-27,-45,0,0,0,0,22,-20,-20,-64,-32,-56,-56,-51,-23,-22,-8,-8,-6,-10,0,-26,-25,-13,-23,-49,-49,-51,-44,-57,-31,-66,-10,-31,-46,-90,-10,-17,-15,-15,-10,-10,-10,-90,-90,-195,-147,-304,-310,-310,-90,-90,-90,-90,-90,-90,-90,-90,-90,-277,-90,-90,-90,-90,-90,-95,-97,-121,-121,-121,-121,-121,-121,-139,-139,-154,-141,-141,-134,-128,-121,-121,-107,-107,-91,-121,-121,-121,-121,-276,-121,-131,-97,-310,-286,-279,-284,-251,-80,-80,-79,-79,-79,-237,-130,-134,-118,-83,-54,-54,-14,-125,-125,-510,-496,-470,-239,-491,-208,-637,-593,-961,-945,-825,-828,-1369,-1341,-894,-827,-29983,-29984,-29984,-29985,-29985,-29986]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Be7 6. Bxf6 gxf6 7. Qd2 f5 {C13: French: Classical System: 4 Bg5 Be7, Alekhine-Chatard Attack.} 8. Ng3 {[%cal Be4g3,Bg3e2,Be2c3][%mdl 32] [#]} h5 $146 {[%cal Bh7h5,Bh5h4][%mdl 32]} ({Predecessor:} 8... a6 9. O-O-O b5 10. Nh5 Rg8 11. Be2 Bb7 12. Bf3 Bg5 13. Nf4 Qd6 14. g3 Bxf4 15. gxf4 Bxf3 16. Nxf3 {1-0 (71) Adams,M (2701)-Harvey,M (2412) London 2019}) 9. Nf3 h4 {The position is equal.} 10. Ne2 Qd6 11. O-O-O Nd7 12. Nc3 a6 {Inhibits Nb5.} 13. Bd3 {[%cal Od4d5]} b5 14. Rhe1 ({White should try} 14. d5 $1 $11) 14... Bb7 (14... b4 $1 $15 15. Ne2 Bb7) 15. d5 $1 $11 Bxd5 16. Nxd5 Qxd5 17. Bxf5 $1 {[%mdl 64] Pin} Qxd2+ 18. Rxd2 O-O-O ({But not} 18... exf5 19. Rde2 O-O-O 20. Rxe7 $16) 19. Bd3 Bf6 20. c3 c6 21. Kc2 Kc7 22. Bf1 Rh5 23. Red1 Rd5 24. c4 Rxd2+ (24... Rf5 {with more complications.} 25. Bd3 Rf4 26. cxb5 axb5 27. Be2 Rf5) 25. Rxd2 b4 26. Ne1 a5 27. Nd3 Rb8 28. Be2 Bg7 (28... Rg8 $15 {should be considered.}) 29. Bh5 Rf8 30. f4 Bd4 {[#]} 31. Rd1 (31. Nxb4 $142 $1 Be3 32. Na6+ Kc8 33. Rd6) 31... c5 32. Rf1 (32. Re1 $11) 32... a4 33. Nc1 Rg8 34. Bf3 Nb6 35. b3 axb3+ 36. axb3 Nc8 37. Ne2 Bf6 38. g3 Nd6 39. g4 {Prevents Nf5.} Rb8 40. h3 Rb6 $1 41. g5 Bg7 42. g6 f5 43. Nc1 $1 Ra6 (43... Bd4 $15) 44. Re1 Ne8 45. Nd3 (45. Rd1 $1 $15 {feels stronger.}) 45... Ra2+ (45... Bd4 $1 $17) 46. Kb1 $1 Ra1+ 47. Kc2 Rxe1 48. Nxe1 {[%mdl 4096] Endgame KBN-KBN} Kd6 49. Ng2 (49. Kd3 $11 {remains equal.}) 49... Bf6 $17 50. Ne3 (50. Kd3 $17) 50... Bd4 $19 51. Ng2 (51. Nf1 $17) 51... Bf2 $1 52. Kd3 Ke7 $2 (52... Ng7 $19 {Threatens to win with ...Ke7.} 53. Ke2 Bg3) 53. Bc6 Ng7 54. Ke2 Bg3 {...Kf6 is the strong threat.} 55. Kf3 Kf6 56. Ne3 Kxg6 57. Nd1 $2 (57. Nf1 $17 {only move.}) 57... Bh2 $2 (57... e5 $19 {has better winning chances.} 58. fxe5 Ne6) 58. Nb2 Bg1 59. Nd3 Bd4 60. Ba4 Kf7 61. Ne1 Nh5 62. Ng2 Bf6 $1 {Black is more active.} 63. Bc6 Ke7 64. Ba8 Kd6 65. Ne3 Ng7 66. Bb7 Kc7 67. Ba8 Ne8 68. Ke2 Nd6 69. Bf3 Nc8 70. Bd5 Kd6 ({And not} 70... exd5 71. Nxd5+ Kd8 72. Nxf6 $15) 71. Bb7 Ne7 72. Ba8 $2 (72. Ng2 $17) 72... Bb2 (72... Ng6 $19 {and Black stays clearly on top.} 73. Kf3 Bg7) 73. Ng2 $17 Ng6 $1 {Hoping for ...Bc1.} 74. Kf3 $2 (74. Bf3 $17 {is the only way for White.}) 74... Bc1 $19 75. Bb7 e5 {[%cal Rc1f4] White must now prevent ...Bxf4.} 76. fxe5+ Nxe5+ $2 (76... Kxe5 $19 {aiming for ...Kd4.} 77. Bc6 Kd4) 77. Ke2 $17 Bg5 78. Ne1 Ng6 {Strongly threatening ...Nf4+.} 79. Nf3 $2 {[#]} (79. Nd3 $17) 79... Nf4+ (79... Kc7 $1 $19 80. Nxg5 (80. Bd5 Nf4+) 80... Kxb7) 80. Kf1 Bf6 81. Bc8 Nh5 82. Kf2 f4 83. Nd2 {[#]} (83. Ke2 $11) 83... Ke5 $1 {And now ...Kd4 would win.} 84. Kf3 $2 {[%mdl 8192]} (84. Bb7 $17 {nothing else works.}) 84... Ng3 $19 85. Bd7 Be7 (85... Kd4 $142 86. Nb1 Kd3) 86. Kg4 $2 (86. Ba4 {is a better defense.}) 86... Ne2 (86... Kd4 $142 87. Nf3+ Kc3 88. Nxh4 Bxh4 89. Kxh4 Kxb3) 87. Nf3+ $2 (87. Kf3 Nc1 88. Ba4) 87... Ke4 88. Bc6+ Ke3 89. Ne1 Nd4 {[%csl LRb3,LRc6]} 90. Ng2+ Kf2 91. Bd5 f3 92. Nxh4 Bxh4 {Black mates.} 93. Kxh4 Nxb3 94. Kg4 Nd2 {Weighted Error Value: White=0.20 (precise) /Black=0.21 (precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.13"]
[White "Acor, Corey"]
[Black "Cornelisse, John"]
[Result "1/2-1/2"]
[ECO "B10"]
[WhiteElo "2303"]
[BlackElo "2173"]
[Annotator "ChessBase"]
[PlyCount "162"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:08:53]} c6 {[%emt 0:00:10]} 2. Nc3 {[%emt 0:00:09]} d5 {[%emt 0:00:13]} 3. Nf3 {[%emt 0:00:37]} dxe4 {[%emt 0:00:18]} 4. Nxe4 {[%emt 0:00:08]} Nf6 {[%emt 0:00:11]} 5. Qe2 {[%emt 0:00:10]} Nxe4 {[%emt 0:00:20]} 6. Qxe4 {[%emt 0:00:06]} Nd7 {[%emt 0:00:15]} 7. d4 {[%emt 0:00:07]} Nf6 {[%emt 0:00:37]} 8. Qf4 {[%emt 0:01:19]} Bg4 {[%emt 0:04:12]} 9. Ne5 {[%emt 0:00:41]} Bh5 {[%emt 0:00:13]} 10. g4 {[%emt 0:01:15]} Bg6 {[%emt 0:00:13]} 11. Bg2 {[%emt 0:02:00]} e6 {[%emt 0:04:15]} 12. O-O {[%emt 0:05:23]} Nd7 {[%emt 0:06:28]} 13. Nxg6 {[%emt 0:01:13]} hxg6 {[%emt 0:00:09]} 14. Re1 {[%emt 0:03:07]} Nf6 {[%emt 0:02:50]} 15. h3 {[%emt 0:00:50]} Bd6 {[%emt 0:02:39]} 16. Qf3 {[%emt 0:01:06]} Qc7 {[%emt 0:03:49]} 17. Bg5 {[%emt 0:00:44]} Nh7 {[%emt 0:04:03]} 18. Be3 {[%emt 0:00:40]} O-O {[%emt 0:01:02]} 19. c4 {[%emt 0:00:48]} Rad8 {[%emt 0:07:53]} 20. Rad1 {[%emt 0:05:55]} Rfe8 {[%emt 0:04:14]} 21. c5 {[%emt 0:03:06]} Be7 {[%emt 0:00:35]} 22. Bf4 {[%emt 0:00:32]} Qc8 {[%emt 0:03:50]} 23. Qg3 {[%emt 0:01:21]} Nf6 {[%emt 0:01:07]} 24. Be5 {[%emt 0:00:38]} Nd5 {[%emt 0:01:01]} 25. g5 {[%emt 0:01:04]} b6 {[%emt 0:06:20]} 26. cxb6 {[%emt 0:06:08]} axb6 {[%emt 0:00:07]} 27. Rc1 {[%emt 0:00:18]} Qa6 {[%emt 0:07:17]} 28. a3 {[%emt 0:03:37]} b5 {[%emt 0:01:48]} 29. Bf1 {[%emt 0:01:49]} Qb6 {[%emt 0:03:15]} 30. b4 {[%emt 0:02:08]} Ra8 {[%emt 0:00:29]} 31. Rb1 {[%emt 0:00:33]} Qa7 {[%emt 0:01:41]} 32. Rb3 {[%emt 0:00:20]} Bd8 {[%emt 0:00:47]} 33. h4 {[%emt 0:00:18]} Bb6 {[%emt 0:00:17]} 34. Re4 {[%emt 0:03:33]} Ne7 {[%emt 0:00:58]} 35. Qg4 {[%emt 0:00:36]} Nf5 {[%emt 0:01:02]} 36. h5 {[%emt 0:07:07]} Bc7 {[%emt 0:03:41]} 37. Rc3 {[%emt 0:02:24]} Rac8 {[%emt 0:02:48]} 38. Qf3 {[%emt 0:14:08]} Bxe5 {[%emt 0:15:54]} 39. dxe5 {[%emt 0:00:53]} Red8 {[%emt 0:01:20]} 40. hxg6 {[%emt 0:08:56]} fxg6 {[%emt 0:00:06]} 41. Re1 {[%emt 0:37:13]} Qe7 {[%emt 0:33:38]} 42. Rec1 {[%emt 0:00:00]} Qxg5+ {[%emt 0:00:00]} 43. Qg2 {[%emt 0:00:00]} Qh5 {[%emt 0:00:00]} 44. Rh3 {[%emt 0:00:00]} Nh4 {[%emt 0:00:00]} 45. Qg3 {[%emt 0:00:00]} Rd4 {[%emt 0:00:00]} 46. Qe3 {[%emt 0:01:36]} Rg4+ {[%emt 0:00:00]} 47. Kh1 {[%emt 0:00:24]} Nf5 {[%emt 0:01:44]} 48. Qd2 {[%emt 0:02:08]} Rh4 {[%emt 0:00:44]} 49. Rcc3 {[%emt 0:00:01]} g5 {[%emt 0:01:33]} 50. Qd7 {[%emt 0:01:31]} Re8 {[%emt 0:01:18]} 51. Rxh4 {[%emt 0:01:20]} gxh4 {[%emt 0:00:29]} 52. Be2 {[%emt 0:02:07]} Qxe2 {[%emt 0:04:09]} 53. Qxe8+ {[%emt 0:00:06]} Kh7 {[%emt 0:00:02]} 54. Qxe6 {[%emt 0:03:17]} Qxf2 {[%emt 0:01:33]} 55. Qxc6 {[%emt 0:01:19]} Ng3+ {[%emt 0:01:22]} 56. Rxg3 {[%emt 0:00:02]} hxg3 {[%emt 0:00:05]} 57. Qe4+ {[%emt 0:00:35]} g6 {[%emt 0:01:41]} 58. Qb7+ {[%emt 0:02:24]} Kh6 {[%emt 0:00:19]} 59. Qg2 {[%emt 0:00:25]} Qe1+ {[%emt 0:00:16]} 60. Qg1 {[%emt 0:00:02]} Qxe5 {[%emt 0:00:11]} 61. Kg2 {[%emt 0:01:16]} Kg5 {[%emt 0:02:04]} 62. Qc5 {[%emt 0:00:28]} Kf5 {[%emt 0:00:36]} 63. Qc8+ {[%emt 0:00:08]} Ke4 {[%emt 0:00:39]} 64. Qc2+ {[%emt 0:00:42]} Kf4 {[%emt 0:00:26]} 65. Qd2+ {[%emt 0:00:30]} Kf5 {[%emt 0:00:39]} 66. Qd7+ {[%emt 0:00:18]} Ke4 {[%emt 0:00:40]} 67. Qg4+ {[%emt 0:00:51]} Kd3 {[%emt 0:00:40]} 68. Qd1+ {[%emt 0:00:31]} Kc4 {[%emt 0:00:29]} 69. Qc2+ {[%emt 0:00:02]} Qc3 {[%emt 0:00:23]} 70. Qe2+ {[%emt 0:00:36]} Qd3 {[%emt 0:00:33]} 71. Qa2+ {[%emt 0:00:44]} Kd4 {[%emt 0:00:13]} 72. Qa1+ {[%emt 0:00:14]} Kd5 {[%emt 0:00:28]} 73. Qa2+ {[%emt 0:00:24]} Ke5 {[%emt 0:00:21]} 74. a4 {[%emt 0:00:55]} bxa4 {[%emt 0:00:58]} 75. Qxa4 {[%emt 0:00:35]} Qe4+ {[%emt 0:00:19]} 76. Kxg3 {[%emt 0:00:04]} Qf4+ {[%emt 0:00:05]} 77. Kg2 {[%emt 0:00:13]} Qd2+ {[%emt 0:00:10]} 78. Kf1 {[%emt 0:00:52]} Qd3+ {[%emt 0:00:39]} 79. Ke1 {[%emt 0:00:21]} Qe3+ {[%emt 0:00:16]} 80. Kd1 {[%emt 0:00:28]} Qd3+ {[%emt 0:00:09]} 81. Ke1 {[%emt 0:00:34]} Kd5 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.14"]
[White "Bomans, Arno"]
[Black "Soucek, Petr"]
[Result "0-1"]
[ECO "E83"]
[WhiteElo "2246"]
[BlackElo "2117"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,62,39,43,47,27,37,27,31,11,63,46,54,24,32,2,14,-131,-122,-141,-152,-129,-148,-163,-148,-152,-147,-151,-149,-291,-323,-326,-318,-306,-266,-245,-254,-260,-258,-255,-265,-371,-384,-551,-562,-972,-940,-1086,-1070,-1016,-995]} 1. d4 d6 2. e4 Nf6 3. f3 g6 4. c4 Bg7 5. Nc3 O-O 6. Be3 Nc6 7. Nge2 a6 8. Qd2 Na5 {E83: King's Indian: Sämisch Panno (6...Nc6): Lines without either Nge2 or Qd2.} 9. Nc1 Nd7 10. Be2 (10. Nb3 $5 {[%cal Rb3a5]} c5 11. Rd1 $11 (11. dxc5 Nxb3 12. axb3 Nxc5 $11)) 10... c5 {White has an edge.} 11. dxc5 Nxc5 {[#]} ({Better is} 11... Ne5 $1 $11) 12. b4 $146 {[%csl LRa5,LRc5] aiming for Rb1.} ({Predecessor:} 12. Rb1 Nc6 13. b4 Ne6 14. O-O a5 15. b5 Ne5 16. f4 Nd7 17. Nd3 Nd4 18. Bd1 {1-0 (49) Agrafenin,A-Makeev,V (2366) ICCF email 2011}) 12... Ne6 {[%cal Oc8d7]} 13. Nb3 ({Reject} 13. bxa5 Qxa5 14. Nb3 (14. e5 $2 Bxe5 15. Nb3 Qxc3 $19) 14... Qxc3 $17) (13. Rb1 $5 {[%cal Rb4a5]} Nc6 14. O-O $11) 13... Nc6 {[%cal Ba5c6,Bc6d4,Bd4b3,Bb3d4][%mdl 32]} 14. a3 a5 $1 {[%cal Ba6a5,Ba5a4][%mdl 32]} 15. b5 {[#]} (15. Rb1 $11 {keeps the balance.}) 15... a4 $1 $17 {Black keeps a firm grip on the game.} 16. Nc1 {[#]} (16. bxc6 axb3) 16... Qa5 $1 17. N1a2 Ncd4 {...Nb3 is the strong threat.} 18. Rb1 Nb3 19. Qd3 Nec5 20. Qc2 {[#]} Nd4 $1 {Black is more active.} 21. Qd2 (21. Bxd4 $17 Bxd4 22. Nb4) 21... Ncb3 $19 22. Qd3 {[#]} Be6 $1 {[%cal Bc8e6,Be6c4,Bc4e2,Be2f1,Bf1b5][%mdl 32]} 23. O-O {[#]} Nc5 $1 24. Qd1 Nxe2+ 25. Nxe2 Bxc4 26. Nb4 Nb3 ({Inferior is} 26... Qxb5 27. Nd5 Nb3 28. Nc7 Bxe2 29. Nxb5 Bxd1 30. Rfxd1 $19) ({Don't go for} 26... Bxb5 $2 27. Rf2 $19) 27. Nd5 e6 28. Nb6 (28. Nb4 {might work better.}) 28... Bxe2 {This bishop pair is nice. Black is clearly winning.} 29. Qe1 Bxf1 30. Nxa8 Qxe1 31. Rxe1 Bxb5 {Weighted Error Value: White=0.69/Black=0.04 (flawless)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.15"]
[White "Torngren, Gustav"]
[Black "Yakimenko, Alexander A."]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2228"]
[BlackElo "2055"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,59,33,33,13,28,7,27,22,29,11,71,73,71,66,62,74,84,54,96,89,80,86,126,91,70,37,54,43,112,120,111,112,118,113,91,112,163,151,144,0,152,160,194,197,307,310,318,312,12819,5385,1778,1497]} 1. g3 e6 2. Bg2 f5 3. d3 Nf6 4. c4 Bb4+ 5. Nd2 {[#]} a5 $146 ({Predecessor:} 5... O-O 6. Ngf3 d6 7. O-O Bxd2 8. Bxd2 Nc6 9. b4 Rb8 10. b5 Ne7 11. Qb3 Nd7 12. Be3 {0-1 (29) Martinez Medina,E (2175)-Cepeda Delgado,C (2141) Madrid 2010}) 6. Ngf3 {A10: English Opening: Unusual Replies for Black.} Nc6 7. d4 O-O 8. O-O {White has an edge.} d5 9. Qc2 Kh8 (9... Be7 $11 {remains equal.}) 10. a3 $16 Be7 11. b3 Qe8 12. Bb2 Qh5 13. Ne5 Ng4 (13... Nxe5 $14 14. dxe5 Ne4) 14. Nxg4 fxg4 15. e4 dxc4 16. Nxc4 e5 17. dxe5 (17. d5 $5 {[%cal Rd5c6]} Nd4 18. Bxd4 exd4 19. e5 $14) 17... Be6 18. Ne3 Rae8 (18... Nxe5 $14 19. Qxc7 Bf6) 19. Rad1 Nxe5 20. Qxc7 Nf3+ 21. Bxf3 gxf3 22. Qxb7 $40 {[%mdl 128] White wants a kill.} Qf7 (22... Qh3 $16 23. Qc7 Bxb3) 23. Nd5 $18 Qh5 {[#] Strongly threatening ...Bxd5.} 24. Ne3 Qf7 $1 25. Rd3 {[%cal Bd1d3,Bd3d7,Bd7d8][%mdl 32]} Rb8 26. Qc7 Bxb3 (26... Bg5 $142 27. Qxf7 (27. Qxa5 Bxe3 28. Rxe3 Bxb3 $18) 27... Rxf7) 27. Nf5 Bf6 28. Rd7 Qh5 (28... Qxd7 29. Qxd7 Bxb2) 29. Bxf6 gxf6 {[#]} 30. Rd8 $1 {[%mdl 512] Weighted Error Value: White=0.11 (very precise) /Black=0.22 (precise)} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.16"]
[White "Koubova, Anna Marie"]
[Black "Babula, Vlastimil"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2148"]
[BlackElo "2561"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,71,23,23,19,28,28,40,36,0,0,-39,-27,-81,-83,-98,-71,-89,-80,-95,-87,-90,-75,-92,-94,-88,-80,-93,-81,-94,-86,-299,-289,-380,-372,-408,-243,-465,-31,-40,0,0,0,0,128,122,767,744,736,727,1414,1364,1500,1405]} 1. d4 Nf6 2. g3 g6 3. Bg2 Bg7 4. e4 d6 5. Ne2 O-O 6. O-O e5 7. Nbc3 Nbd7 8. h3 c6 9. a4 Re8 10. Be3 exd4 11. Bxd4 b6 {B07: Pirc Defence: Miscellaneous Systems.} 12. g4 h6 13. Ng3 Bb7 {[#] White is slightly better.} 14. Be3 $146 (14. Qd2 {is more complex.} d5 15. a5 bxa5 16. Rfd1 Nb6 17. Qf4) ({Predecessor:} 14. Qd2 Ne5 15. b3 Qe7 16. f4 Ned7 17. Rad1 Rad8 18. Rfe1 a6 19. Qf2 b5 20. axb5 axb5 {0-1 (44) Rodin,M (2365)-Mihajlovskij,S (2476) Minsk 2008}) 14... Ne5 15. Bf4 Nh7 16. Re1 (16. Bc1 $11 {remains equal.}) 16... Qf6 $17 17. Bc1 Qh4 18. Re3 Ng5 19. Nf1 Nc4 20. Rd3 c5 {[%cal Rg5e4]} 21. Bxg5 Qxg5 22. Rb1 {[#]} Rad8 $1 23. b3 Ne5 24. Rxd6 Nxg4 25. Nb5 $2 (25. Rxd8 $17 {might work better.} Rxd8 26. Qxg4 Bxc3 27. Qxg5 hxg5 28. Ne3) 25... Rxd6 $19 26. Qxd6 {Threatens to win with Qd7.} Ne5 {Inhibits Qd7.} 27. Ng3 h5 (27... Rd8 $142 28. Qc7 Rd7 29. Qb8+ Kh7) 28. Kh1 $2 (28. Qc7 h4 29. Rf1 hxg3 30. f4) 28... a6 $2 (28... Rd8 $19 29. Qc7 Rd7 30. Qb8+ Kh7) 29. Qxb6 $15 Bc6 {This bishop pair is nice.} 30. Nc7 $36 {[%cal Bb5c7,Bc7d5,Bd5e7][%mdl 2080] White has good play.} Rc8 {And now ...Qd2 would win.} 31. Nd5 ({Don't go for} 31. Nxa6 $2 Qd2 32. Qxc5 Bb7 $19) 31... h4 {[#]} (31... c4 $11 {keeps the balance.}) 32. Nf1 $1 $16 {aiming for f4.} ({Much worse is} 32. Qxa6 $6 Ra8 33. Qf1 hxg3 $11) 32... Qh5 $2 {[%mdl 8192]} (32... Bxd5 $16 33. exd5 Qf6 34. Qxf6 Bxf6) 33. Ne7+ $18 {White is clearly winning.} Kh7 34. Nxc8 Nf3 35. Qxc6 Be5 36. Qd7 {Weighted Error Value: White=0.35/Black=0.57} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.17"]
[White "Bochnicka, Vladimir"]
[Black "Lorans, Sylvain"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "2222"]
[BlackElo "2110"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,56,16,18,21,5,9,8,6,12,37,35,39,38,53,66,57,43,147,154,175,180,179,189,244,231,231,249,365,352,412,387,502,473,703,606,993,982,29982,29983,6221]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 a6 6. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1g3][%mdl 32]} d6 7. Bb3 Ba7 8. Nf1 O-O 9. Ng3 h6 10. O-O Re8 {is recently more successful than 10...Be6. C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 11. h3 Be6 12. Qe2 d5 {The position is equal.} 13. Rd1 Qe7 14. Nh4 {[%cal Bf3h4,Bh4f5,Bf5h6][%mdl 32]} Rad8 15. Nhf5 Qf8 16. Qf3 $1 {[%cal Of5h6]} dxe4 {[#]} 17. Nxh6+ $146 (17. dxe4 {seems wilder.} Bxb3 18. Rxd8 Nxd8 19. axb3 Re6 20. b4) ({Predecessor:} 17. dxe4 Rxd1+ 18. Bxd1 Rd8 19. Bb3 Nh7 20. Nh5 Bxf5 21. Qxf5 Na5 22. Bc2 Nc4 23. b3 {0-1 (44) Sjugirov,S (2680)-Sanal,V (2601) Warsaw 2021}) 17... Kh7 {[#]} (17... gxh6 $14 18. Qxf6 Bxb3 19. axb3 Re6) 18. dxe4 $1 $16 {[%cal Oc1g5]} Bxb3 (18... Rxd1+ 19. Bxd1) 19. Rxd8 {The board is on fire.} Rxd8 20. axb3 {[%cal Oc1g5]} gxh6 (20... Qe8 {keeps fighting.} 21. Qf5+ Kh8) 21. Qxf6 $18 Rd6 22. Qf5+ Kh8 (22... Rg6 {might work better.} 23. Qf3 Ne7) 23. Qh5 {Nf5 is the strong threat.} Ne7 24. Qxe5+ f6 25. Qh5 f5 (25... Ng8 $142 26. Bf4 Rd7) 26. exf5 {[#] Hoping for Bf4.} Qg7 27. Bf4 {And now Qe8+ would win.} Rd3 28. f6 Qxf6 {Weighted Error Value: White=0.05 (flawless) /Black=0.84} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.18"]
[White "Kukucka, Matej"]
[Black "Blahynka, Martin"]
[Result "0-1"]
[ECO "E52"]
[WhiteElo "2104"]
[BlackElo "2399"]
[Annotator "ChessBase"]
[PlyCount "54"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. cxd5 exd5 9. Bd2 Re8 10. Ne5 Bd6 11. f4 c5 12. Qf3 Nbd7 13. g4 Ne4 14. Nxe4 dxe4 15. Bxe4 Bxe4 16. Qxe4 Nxe5 17. fxe5 Bxe5 18. dxe5 Qxd2 19. Rf2 Qd8 20. Raf1 Re7 21. Qc4 Qd7 22. Rf5 Rf8 23. Qf4 Qe6 24. Rh5 Qxa2 25. Qf5 h6 26. g5 g6 27. Qf6 Re6 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.19"]
[White "Fus, Jakub"]
[Black "Zysko, Jan"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2384"]
[BlackElo "2092"]
[Annotator "RC"]
[PlyCount "91"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. Nf3 {[%emt 0:00:02]} d5 {[%emt 0:02:34]} 2. g3 {[%emt 0:00:31]} g6 {[%emt 0:01:37]} 3. Bg2 {[%emt 0:00:47]} Bg7 {[%emt 0:00:08]} 4. d4 {[%emt 0:01:24]} Nf6 {[%emt 0:01:16]} 5. O-O {[%emt 0:02:09]} O-O {[%emt 0:00:28]} 6. c3 {[%emt 0:00:15]} c6 {[%emt 0:01:59]} 7. Nbd2 {[%emt 0:01:31]} Nbd7 {[%emt 0:03:33]} 8. Re1 {[%emt 0:03:58]} Re8 {[%emt 0:05:56]} 9. e4 {[%emt 0:03:09]} Nxe4 {[%emt 0:02:01]} 10. Nxe4 {[%emt 0:00:17]} dxe4 {[%emt 0:00:07]} 11. Rxe4 {[%emt 0:01:25]} Nf6 {[%emt 0:12:08]} 12. Re1 {[%emt 0:00:15]} Bf5 {[%emt 0:01:56]} 13. Ne5 {[%emt 0:07:13]} Nd7 {[%emt 0:05:14]} 14. Bf4 {[%emt 0:05:04]} Nxe5 {[%emt 0:01:56]} 15. Bxe5 {[%emt 0:00:21]} Qd7 {[%emt 0:01:01]} 16. Bxg7 {[%emt 0:00:48]} Kxg7 {[%emt 0:00:10]} 17. Re3 {[%emt 0:04:43]} Bg4 {[%emt 0:03:22]} 18. Qa4 {[%emt 0:01:51]} Bh3 {[%emt 0:02:57]} 19. Bh1 {[%emt 0:09:39]} Be6 {[%emt 0:07:20]} 20. Rae1 {[%emt 0:01:20]} Qd6 {[%emt 0:00:35]} 21. Re5 {[%emt 0:05:22]} Bd5 {[%emt 0:04:54]} 22. R1e2 {[%emt 0:01:09]} Bxh1 {[%emt 0:02:53]} 23. Kxh1 {[%emt 0:00:05]} e6 {[%emt 0:00:25]} 24. Qc4 {[%emt 0:03:15]} Red8 {[%emt 0:02:10]} 25. h4 {[%emt 0:00:54]} h5 {[%emt 0:01:18]} 26. a4 {[%emt 0:02:26]} b6 {[%emt 0:04:25]} 27. a5 {[%emt 0:02:44]} Rac8 {[%emt 0:03:31]} 28. b4 {[%emt 0:03:30]} c5 {[%emt 0:04:55]} 29. dxc5 {[%emt 0:00:57]} Qc6+ {[%emt 0:03:34]} 30. R2e4 {[%emt 0:14:56]} bxa5 {[%emt 0:00:11]} 31. b5 {[%emt 0:01:07]} Qc7 {[%emt 0:00:33]} 32. Qe2 {[%emt 0:02:04]} Rd5 {[%emt 0:02:01]} 33. c6 {[%emt 0:02:05]} Rxe5 {[%emt 0:02:23]} 34. Rxe5 {[%emt 0:00:14]} a4 {[%emt 0:03:40]} 35. c4 {[%emt 0:06:40]} Rd8 {[%emt 0:01:23]} 36. Re3 {[%emt 0:00:18]} Qa5 {[%emt 0:02:37]} 37. Qb2+ {[%emt 0:00:04]} Kg8 {[%emt 0:01:35]} 38. Qc3 {[%emt 0:00:07]} Qb6 {[%emt 0:01:16]} 39. Qb4 {[%emt 0:00:51]} Rd1+ {[%emt 0:00:12]} 40. Kg2 {[%emt 0:00:06]} Qd4 {[%emt 0:00:34]} 41. c7 {[%emt 0:33:39]} Qd7 {[%emt 0:31:15]} 42. Qxa4 {[%emt 0:00:14]} Rd4 {[%emt 0:00:29]} 43. Qxa7 {[%emt 0:00:09]} Rxc4 {[%emt 0:00:04]} 44. Qa8+ {[%emt 0:00:40]} Kh7 {[%emt 0:00:03]} 45. b6 {[%emt 0:00:12]} Rc1 {[%emt 0:00:33]} 46. b7 {[%emt 0:11:15]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.20"]
[White "Macicek, Jakub"]
[Black "Skou, Niels"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2250"]
[BlackElo "2061"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,65,22,23,19,26,18,24,28,33,21,23,10,22,19,76,89,79,85,71,75,95,105,157,154,157,173,156,152,219,208,231,215,341,286,278,183,269,266,270,256,347,351,359,265,1201,1179,29991,29992,29992,29993]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Nbd7 6. e3 c6 7. Bd3 Be7 8. Qc2 h6 {8...Nh5 is a critical line.} 9. Bh4 Nh5 10. Bxe7 {D36: Queen's Gambit Declined: Exchange Variation: Main line (5 Bg5 c6 6 Qc2).} Qxe7 11. O-O-O Nb6 12. Kb1 {White has an edge.} Nf6 13. Rc1 {[%cal Bd1c1,Bc1c3,Bc3a3,Ba3c3,Bc3c5][%mdl 32]} Be6 14. Nf3 (14. f4 {seems wilder.} O-O 15. Nf3 c5 16. Ne5 c4 17. Be2) 14... O-O-O 15. Na4 Nxa4 (15... Kb8 $11 {keeps the balance.}) 16. Qxa4 $16 {White now steadily converts the win.} Kb8 {[#]} 17. Rc3 $1 {[#]} Rc8 $146 ({Predecessor:} 17... Nd7 18. Ra3 Kc7 19. Qa5+ Nb6 20. Rc1 Rb8 21. Bb5 Rhc8 22. Qxa7 Bd7 23. Ba6 Qb4 {1-0 (30) Checa,N (2552)-Nihal,S (2620) Chess.com INT 2021}) 18. Rhc1 Rc7 19. Ne5 {Strongly threatening Ra3.} Rhc8 {[#]} (19... Bd7 $142) 20. Ra3 $1 {[%csl Ga3][%cal Ra4a7]} b5 21. Qa6 Bd7 22. Rac3 {White is much more active.} Qe8 (22... Qe6 $16 23. f3 Ng8) 23. a4 $18 {axb5 is the strong threat.} bxa4 24. Qxa4 {And now Ba6 would win.} (24. Nxd7+ $6 Qxd7 25. Qxa4 Ka8 $16) 24... Ne4 (24... c5 $142 25. Nxd7+ Qxd7) 25. Bxe4 dxe4 26. Rc5 ({But not} 26. Nxd7+ $6 Qxd7 27. Rc5 g6 $18) 26... f6 (26... Ka8 $142 27. Nxd7 Qxd7) 27. Nxd7+ Qxd7 28. d5 {[%cal Bd4d5,Bd5c6][%mdl 32]} f5 29. dxc6 {White threatens Qb5+ and mate.} Qd3+ 30. Ka2 g6 $2 (30... Qd6 31. Rb5+ Ka8) 31. Rd1 Qe2 32. Rd7 a6 33. Qa5 {Weighted Error Value: White=0.12 (very precise) /Black=0.58} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.21"]
[White "Matras, Ondrej"]
[Black "Gajdos, Daniel"]
[Result "1-0"]
[ECO "D40"]
[WhiteElo "2223"]
[BlackElo "2076"]
[Annotator "RC"]
[PlyCount "121"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:01]} Nf6 {[%emt 0:00:06]} 2. c4 {[%emt 0:00:01]} e6 {[%emt 0:00:07]} 3. Nc3 {[%emt 0:00:05]} d5 {[%emt 0:00:03]} 4. Nf3 {[%emt 0:00:06]} c5 {[%emt 0:00:04]} 5. e3 {[%emt 0:00:06]} Nc6 {[%emt 0:00:06]} 6. a3 {[%emt 0:00:13]} dxc4 {[%emt 0:00:08]} 7. Bxc4 {[%emt 0:00:07]} a6 {[%emt 0:00:03]} 8. O-O {[%emt 0:00:19]} b5 {[%emt 0:02:09]} 9. Ba2 {[%emt 0:00:51]} Be7 {[%emt 0:00:38]} 10. Qe2 {[%emt 0:00:37]} cxd4 {[%emt 0:00:22]} 11. Rd1 {[%emt 0:00:38]} O-O {[%emt 0:00:16]} 12. exd4 {[%emt 0:00:24]} Ra7 {[%emt 0:02:33]} 13. b4 {[%emt 0:24:00]} Rd7 {[%emt 0:04:37]} 14. Bb2 {[%emt 0:00:45]} Bb7 {[%emt 0:02:28]} 15. Rac1 {[%emt 0:02:31]} Qb6 {[%emt 0:05:56]} 16. d5 {[%emt 0:02:04]} exd5 {[%emt 0:03:08]} 17. Nxd5 {[%emt 0:00:20]} Nxd5 {[%emt 0:00:49]} 18. Rxd5 {[%emt 0:01:19]} Rfd8 {[%emt 0:09:42]} 19. Rf5 {[%emt 0:36:31]} Bf8 {[%emt 0:01:10]} 20. Rxf7 {[%emt 0:21:00]} Rxf7 {[%emt 0:02:03]} 21. Bxf7+ {[%emt 0:00:44]} Kxf7 {[%emt 0:06:35]} 22. Rxc6 {[%emt 0:00:07]} Qxc6 {[%emt 0:05:39]} 23. Ne5+ {[%emt 0:00:13]} Kg8 {[%emt 0:00:07]} 24. Nxc6 {[%emt 0:00:05]} Bxc6 {[%emt 0:00:12]} 25. h4 {[%emt 0:01:54]} Bd5 {[%emt 0:05:44]} 26. Qe5 {[%emt 0:01:02]} Bf7 {[%emt 0:02:18]} 27. Bd4 {[%emt 0:01:00]} Rd5 {[%emt 0:01:11]} 28. Qe3 {[%emt 0:00:32]} Bd6 {[%emt 0:02:23]} 29. g4 {[%emt 0:00:35]} h5 {[%emt 0:01:39]} 30. g5 {[%emt 0:04:08]} Rf5 {[%emt 0:21:26]} 31. g6 {[%emt 0:00:08]} Bc4 {[%emt 0:05:08]} 32. Qe8+ {[%emt 0:00:02]} Bf8 {[%emt 0:01:04]} 33. Bc5 {[%emt 0:00:21]} Rf6 {[%emt 0:00:30]} 34. Bxf8 {[%emt 0:02:15]} Rxf8 {[%emt 0:01:21]} 35. Qe5 {[%emt 0:00:02]} Rf6 {[%emt 0:05:04]} 36. Qxh5 {[%emt 0:00:10]} Be6 {[%emt 0:03:47]} 37. Qg5 {[%emt 0:00:29]} Bf5 {[%emt 0:02:46]} 38. h5 {[%emt 0:00:01]} Kf8 {[%emt 0:01:38]} 39. Kh2 {[%emt 0:01:12]} Kg8 {[%emt 0:00:42]} 40. Kg3 {[%emt 0:00:29]} Kf8 {[%emt 0:00:31]} 41. Qd2 {[%emt 0:31:23]} Bxg6 {[%emt 0:31:09]} 42. hxg6 {[%emt 0:00:14]} Rxg6+ {[%emt 0:00:10]} 43. Kf4 {[%emt 0:00:21]} Rf6+ {[%emt 0:00:16]} 44. Kg5 {[%emt 0:00:14]} Ke7 {[%emt 0:01:58]} 45. Qd4 {[%emt 0:01:08]} Kf7 {[%emt 0:01:25]} 46. Qd5+ {[%emt 0:00:00]} Kf8 {[%emt 0:00:00]} 47. Qd8+ {[%emt 0:00:00]} Kf7 {[%emt 0:00:00]} 48. Qd7+ {[%emt 0:00:00]} Kf8 {[%emt 0:00:00]} 49. f4 {[%emt 0:00:00]} Rh6 {[%emt 0:00:00]} 50. Qf5+ {[%emt 0:00:00]} Ke7 {[%emt 0:00:00]} 51. Qe5+ {[%emt 0:00:00]} Kf7 {[%emt 0:00:00]} 52. f5 {[%emt 0:00:00]} Kf8 {[%emt 0:00:00]} 53. Qb8+ {[%emt 0:00:00]} Kf7 {[%emt 0:00:00]} 54. Qc7+ {[%emt 0:00:00]} Kf8 {[%emt 0:00:00]} 55. Qd7 {[%emt 0:00:00]} Kg8 {[%emt 0:00:00]} 56. Qe7 {[%emt 0:00:00]} Kh7 {[%emt 0:00:00]} 57. f6 {[%emt 0:00:00]} Rxf6 {[%emt 0:00:00]} 58. Qxf6 {[%emt 0:00:00]} gxf6+ {[%emt 0:00:00]} 59. Kxf6 {[%emt 0:00:00]} Kg8 {[%emt 0:00:00]} 60. Ke7 {[%emt 0:00:00]} Kg7 {[%emt 0:00:00]} 61. Kd7 {[%emt 0:00:00]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.22"]
[White "Adamko, Peter"]
[Black "Michalczak, Thomas"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "2113"]
[BlackElo "2218"]
[Annotator "ChessBase"]
[PlyCount "138"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:03]} e5 {[%emt 0:04:00]} 2. Nf3 {[%emt 0:00:22]} Nc6 {[%emt 0:00:13]} 3. Bc4 {[%emt 0:01:28]} Nf6 {[%emt 0:00:12]} 4. d3 {[%emt 0:00:17]} Bc5 {[%emt 0:00:11]} 5. Nc3 {[%emt 0:00:59]} d6 {[%emt 0:00:23]} 6. h3 {[%emt 0:02:40]} Be6 {[%emt 0:00:22]} 7. Bxe6 {[%emt 0:05:14]} fxe6 {[%emt 0:00:02]} 8. Na4 {[%emt 0:02:59]} Bb6 {[%emt 0:00:48]} 9. Nxb6 {[%emt 0:01:56]} axb6 {[%emt 0:00:09]} 10. c3 {[%emt 0:00:46]} O-O {[%emt 0:00:28]} 11. O-O {[%emt 0:02:32]} Qe8 {[%emt 0:00:19]} 12. Nh2 {[%emt 0:08:14]} Nh5 {[%emt 0:01:25]} 13. g3 {[%emt 0:00:23]} Qg6 {[%emt 0:13:21]} 14. Qg4 {[%emt 0:05:59]} Qxg4 {[%emt 0:01:17]} 15. Nxg4 {[%emt 0:02:22]} Rf3 {[%emt 0:00:56]} 16. Be3 {[%emt 0:02:20]} Raf8 {[%emt 0:03:27]} 17. Kg2 {[%emt 0:06:04]} R3f7 {[%emt 0:11:25]} 18. Rad1 {[%emt 0:08:05]} Rd7 {[%emt 0:04:45]} 19. Bg5 {[%emt 0:07:22]} h6 {[%emt 0:00:32]} 20. Bc1 {[%emt 0:02:57]} Ra8 {[%emt 0:01:10]} 21. a3 {[%emt 0:00:11]} Na5 {[%emt 0:00:18]} 22. b4 {[%emt 0:02:14]} Nc6 {[%emt 0:00:45]} 23. Bb2 {[%emt 0:00:38]} Rdd8 {[%emt 0:04:24]} 24. d4 {[%emt 0:02:36]} exd4 {[%emt 0:01:01]} 25. cxd4 {[%emt 0:00:05]} d5 {[%emt 0:00:23]} 26. e5 {[%emt 0:01:40]} Ne7 {[%emt 0:06:56]} 27. Rd3 {[%emt 0:06:12]} b5 {[%emt 0:01:32]} 28. Rf3 {[%emt 0:06:14]} Nf5 {[%emt 0:09:09]} 29. Ne3 {[%emt 0:02:31]} g6 {[%emt 0:02:08]} 30. Nxf5 {[%emt 0:04:37]} gxf5 {[%emt 0:00:43]} 31. g4 {[%emt 0:00:47]} Ng7 {[%emt 0:00:13]} 32. Bc1 {[%emt 0:02:11]} Kh7 {[%emt 0:00:46]} 33. Rc3 {[%emt 0:01:11]} c6 {[%emt 0:00:27]} 34. f4 {[%emt 0:03:28]} Rh8 {[%emt 0:03:39]} 35. Rg3 {[%emt 0:00:50]} Rag8 {[%emt 0:03:50]} 36. Kf3 {[%emt 0:02:27]} fxg4+ {[%emt 0:07:43]} 37. hxg4 {[%emt 0:00:32]} h5 {[%emt 0:00:15]} 38. Rh1 {[%emt 0:00:59]} Kg6 {[%emt 0:06:23]} 39. f5+ {[%emt 0:06:19]} Kf7 {[%emt 0:03:34]} 40. fxe6+ {[%emt 0:00:26]} Nxe6 {[%emt 0:04:35]} 41. Rf1 {[%emt 0:06:13]} Ke7 {[%emt 0:14:22]} 42. Be3 {[%emt 0:01:43]} hxg4+ {[%emt 0:02:12]} 43. Kg2 {[%emt 0:04:44]} Rg6 {[%emt 0:00:55]} 44. Rh1 {[%emt 0:00:29]} Rxh1 {[%emt 0:00:34]} 45. Kxh1 {[%emt 0:00:06]} Ng7 {[%emt 0:00:10]} 46. Bg1 {[%emt 0:02:04]} Ke6 {[%emt 0:02:34]} 47. Kg2 {[%emt 0:00:18]} Kf5 {[%emt 0:01:26]} 48. Re3 {[%emt 0:00:52]} Kf4 {[%emt 0:00:20]} 49. Re1 {[%emt 0:00:16]} g3 {[%emt 0:06:35]} 50. Rf1+ {[%emt 0:00:31]} Ke4 {[%emt 0:00:14]} 51. Re1+ {[%emt 0:06:46]} Kf5 {[%emt 0:01:50]} 52. Rf1+ {[%emt 0:01:31]} Ke4 {[%emt 0:00:20]} 53. Re1+ {[%emt 0:01:30]} Kf5 {[%emt 0:00:06]} 54. Rf1+ {[%emt 0:00:32]} Ke6 {[%emt 0:00:07]} 55. Rf8 {[%emt 0:01:35]} Nf5 {[%emt 0:01:06]} 56. Re8+ {[%emt 0:01:05]} Kd7 {[%emt 0:01:06]} 57. Rh8 {[%emt 0:00:16]} Rg7 {[%emt 0:01:35]} 58. Rh3 {[%emt 0:01:14]} Ke6 {[%emt 0:00:11]} 59. Rh8 {[%emt 0:00:19]} Kf7 {[%emt 0:00:11]} 60. Ra8 {[%emt 0:01:07]} Kg6 {[%emt 0:03:40]} 61. a4 {[%emt 0:00:14]} bxa4 {[%emt 0:00:07]} 62. Rxa4 {[%emt 0:00:04]} Kg5 {[%emt 0:00:33]} 63. b5 {[%emt 0:00:30]} Kg4 {[%emt 0:00:06]} 64. b6 {[%emt 0:04:01]} Rf7 {[%emt 0:00:37]} 65. Kf1 {[%emt 0:00:59]} Ne3+ {[%emt 0:01:33]} 66. Ke2 {[%emt 0:00:37]} Nc4 {[%emt 0:00:07]} 67. Rb4 {[%emt 0:00:50]} Kh3 {[%emt 0:02:58]} 68. Rb1 {[%emt 0:00:55]} Rf4 {[%emt 0:00:42]} 69. Kd3 {[%emt 0:02:47]} Kg2 {[%emt 0:00:52]} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.23"]
[White "Bouska, Jiri"]
[Black "Jordanov, Mihail"]
[Result "0-1"]
[ECO "C97"]
[WhiteElo "2071"]
[BlackElo "2193"]
[Annotator "ChessBase"]
[PlyCount "124"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:02]} e5 {[%emt 0:00:11]} 2. Nf3 {[%emt 0:00:09]} Nc6 {[%emt 0:00:08]} 3. Bb5 {[%emt 0:00:07]} a6 {[%emt 0:00:06]} 4. Ba4 {[%emt 0:00:05]} Nf6 {[%emt 0:00:21]} 5. O-O {[%emt 0:00:09]} Be7 {[%emt 0:00:07]} 6. Re1 {[%emt 0:00:10]} b5 {[%emt 0:00:08]} 7. Bb3 {[%emt 0:00:04]} d6 {[%emt 0:00:07]} 8. c3 {[%emt 0:00:07]} O-O {[%emt 0:00:05]} 9. h3 {[%emt 0:00:04]} Na5 {[%emt 0:00:19]} 10. Bc2 {[%emt 0:00:36]} c5 {[%emt 0:00:06]} 11. d4 {[%emt 0:00:04]} Qc7 {[%emt 0:00:04]} 12. d5 {[%emt 0:00:07]} Bd7 {[%emt 0:01:09]} 13. b3 {[%emt 0:01:28]} Nb7 {[%emt 0:00:34]} 14. a4 {[%emt 0:07:21]} bxa4 {[%emt 0:06:31]} 15. bxa4 {[%emt 0:00:15]} c4 {[%emt 0:00:20]} 16. Ba3 {[%emt 0:02:19]} Rfe8 {[%emt 0:03:13]} 17. Nbd2 {[%emt 0:02:26]} Bf8 {[%emt 0:09:10]} 18. Qe2 {[%emt 0:01:25]} Rec8 {[%emt 0:00:33]} 19. Reb1 {[%emt 0:09:10]} Nh5 {[%emt 0:15:16]} 20. Qxc4 {[%emt 0:12:00]} Qd8 {[%emt 0:07:17]} 21. Qf1 {[%emt 0:10:06]} Rxc3 {[%emt 0:02:00]} 22. Bd1 {[%emt 0:01:36]} Ra7 {[%emt 0:08:33]} 23. Bb4 {[%emt 0:01:46]} Rc8 {[%emt 0:01:16]} 24. Nxe5 {[%emt 0:01:48]} dxe5 {[%emt 0:00:25]} 25. Bxh5 {[%emt 0:00:51]} Bxb4 {[%emt 0:06:06]} 26. Rxb4 {[%emt 0:01:20]} Qg5 {[%emt 0:00:58]} 27. Qe2 {[%emt 0:03:02]} Bxh3 {[%emt 0:08:08]} 28. Bxf7+ {[%emt 0:02:17]} Kf8 {[%emt 0:04:59]} 29. f4 {[%emt 0:09:37]} exf4 {[%emt 0:03:19]} 30. Nf3 {[%emt 0:09:03]} Qe7 {[%emt 0:06:33]} 31. Rab1 {[%emt 0:02:11]} Bxg2 {[%emt 0:05:09]} 32. Qxg2 {[%emt 0:03:46]} Kxf7 {[%emt 0:00:24]} 33. e5 {[%emt 0:11:17]} Kg8 {[%emt 0:03:16]} 34. d6 {[%emt 0:00:51]} Nxd6 {[%emt 0:00:30]} 35. exd6 {[%emt 0:00:11]} Qxd6 {[%emt 0:00:04]} 36. Rd4 {[%emt 0:01:16]} Qf6 {[%emt 0:01:13]} 37. Rbd1 {[%emt 0:02:20]} Rac7 {[%emt 0:03:22]} 38. Rd6 {[%emt 0:01:29]} Qe7 {[%emt 0:00:13]} 39. Qa2+ {[%emt 0:00:57]} Kf8 {[%emt 0:02:04]} 40. Nd4 {[%emt 0:02:53]} Qe3+ {[%emt 0:02:03]} 41. Qf2 {[%emt 0:30:45]} Rc1 {[%emt 0:10:51]} 42. Ne2 {[%emt 0:00:00]} Rxd1+ {[%emt 0:00:36]} 43. Rxd1 {[%emt 0:00:00]} Qxf2+ {[%emt 0:00:27]} 44. Kxf2 {[%emt 0:00:00]} Rc4 {[%emt 0:00:09]} 45. a5 {[%emt 0:00:00]} Rc5 {[%emt 0:02:21]} 46. Ra1 {[%emt 0:00:00]} g5 {[%emt 0:01:49]} 47. Ra2 {[%emt 0:00:00]} Kf7 {[%emt 0:07:41]} 48. Nd4 {[%emt 0:00:00]} Kf6 {[%emt 0:00:45]} 49. Nc2 {[%emt 0:00:00]} Rb5 {[%emt 0:01:37]} 50. Nd4 {[%emt 0:00:00]} Rc5 {[%emt 0:02:51]} 51. Nc2 {[%emt 0:00:00]} Rc4 {[%emt 0:02:19]} 52. Ke2 {[%emt 0:00:00]} Kf5 {[%emt 0:00:50]} 53. Kd3 {[%emt 0:00:00]} Rc7 {[%emt 0:00:44]} 54. Nb4 {[%emt 0:00:00]} Rd7+ {[%emt 0:00:08]} 55. Ke2 {[%emt 0:00:00]} Re7+ {[%emt 0:01:29]} 56. Kf2 {[%emt 0:00:55]} g4 {[%emt 0:00:41]} 57. Nxa6 {[%emt 0:01:03]} g3+ {[%emt 0:00:04]} 58. Kg2 {[%emt 0:06:25]} Kg4 {[%emt 0:00:41]} 59. Ra4 {[%emt 0:00:46]} Re2+ {[%emt 0:01:35]} 60. Kf1 {[%emt 0:00:12]} Rc2 {[%emt 0:02:48]} 61. Nb4 {[%emt 0:00:24]} Rc1+ {[%emt 0:00:15]} 62. Ke2 {[%emt 0:00:14]} g2 {[%emt 0:00:30]} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7.24"]
[White "Kudrytskyi, Stanislav"]
[Black "Van Foreest, Machteld"]
[Result "1-0"]
[ECO "A50"]
[WhiteElo "2057"]
[BlackElo "2189"]
[Annotator "RC"]
[PlyCount "81"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:03]} Nf6 {[%emt 0:09:41]} 2. c4 {[%emt 0:00:09]} a6 {[%emt 0:00:07]} 3. g3 {[%emt 0:00:12]} c5 {[%emt 0:00:09]} 4. Nf3 {[%emt 0:01:45]} cxd4 {[%emt 0:00:40]} 5. Nxd4 {[%emt 0:00:11]} d6 {[%emt 0:02:27]} 6. Bg2 {[%emt 0:00:11]} Qc7 {[%emt 0:02:25]} 7. b3 {[%emt 0:03:58]} g6 {[%emt 0:01:30]} 8. O-O {[%emt 0:00:34]} Bg7 {[%emt 0:00:28]} 9. Bb2 {[%emt 0:00:18]} O-O {[%emt 0:00:32]} 10. Nc3 {[%emt 0:00:15]} e6 {[%emt 0:09:24]} 11. Rc1 {[%emt 0:01:29]} Rd8 {[%emt 0:05:19]} 12. e4 {[%emt 0:04:35]} Bd7 {[%emt 0:03:49]} 13. f4 {[%emt 0:04:33]} Nc6 {[%emt 0:10:16]} 14. Nc2 {[%emt 0:00:27]} Be8 {[%emt 0:04:08]} 15. Kh1 {[%emt 0:02:24]} Rab8 {[%emt 0:04:32]} 16. Qe2 {[%emt 0:02:10]} Qa5 {[%emt 0:01:21]} 17. a3 {[%emt 0:04:05]} Qc7 {[%emt 0:05:57]} 18. b4 {[%emt 0:01:22]} Rbc8 {[%emt 0:01:19]} 19. Rfd1 {[%emt 0:02:27]} Ne7 {[%emt 0:04:30]} 20. Ne3 {[%emt 0:00:21]} b6 {[%emt 0:00:44]} 21. g4 {[%emt 0:08:34]} Bc6 {[%emt 0:03:54]} 22. Qf2 {[%emt 0:17:20]} Qb7 {[%emt 0:06:52]} 23. f5 {[%emt 0:10:59]} h6 {[%emt 0:10:31]} 24. fxe6 {[%emt 0:04:44]} fxe6 {[%emt 0:00:20]} 25. Ncd5 {[%emt 0:04:01]} exd5 {[%emt 0:00:58]} 26. Bxf6 {[%emt 0:02:18]} Rf8 {[%emt 0:01:17]} 27. cxd5 {[%emt 0:02:57]} Ba4 {[%emt 0:02:55]} 28. e5 {[%emt 0:00:48]} Bxd1 {[%emt 0:00:37]} 29. Rxd1 {[%emt 0:00:05]} Qa7 {[%emt 0:04:11]} 30. Qb2 {[%emt 0:00:25]} dxe5 {[%emt 0:00:31]} 31. Bxg7 {[%emt 0:00:21]} Kxg7 {[%emt 0:00:03]} 32. Qxe5+ {[%emt 0:00:19]} Kh7 {[%emt 0:01:06]} 33. d6 {[%emt 0:01:49]} Ng8 {[%emt 0:00:09]} 34. d7 {[%emt 0:05:36]} Rcd8 {[%emt 0:00:03]} 35. Bc6 {[%emt 0:00:33]} b5 {[%emt 0:03:16]} 36. Rd6 {[%emt 0:03:00]} Qb8 {[%emt 0:00:45]} 37. g5 {[%emt 0:08:29]} hxg5 {[%emt 0:00:43]} 38. Ng4 {[%emt 0:00:42]} Qb6 {[%emt 0:00:42]} 39. Kg2 {[%emt 0:00:57]} Rf4 {[%emt 0:00:51]} 40. Qxg5 {[%emt 0:00:55]} Kh8 {[%emt 0:00:48]} 41. Qxf4 {[%emt 0:30:13]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.1"]
[White "Urkedal, Frode Olav Olsen"]
[Black "Mirzoev, Azer"]
[Result "1-0"]
[ECO "C10"]
[WhiteElo "2553"]
[BlackElo "2420"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,57,31,20,43,25,29,31,35,33,33,42,58,42,62,33,85,93,93,100,83,106,94,91,100,97,92,85,196,189,618,619,889,879,868,889,1132,1132,6291,6275,29994,1355,29993,29994,29998,29999]} 1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. c3 Be7 8. Bd3 O-O {C10: French with 3 Nc3: Unusual Black 3rd moves and 3...dxe4.} 9. Bg5 {9.Qe2 is the modern continuation.} h6 {[#]} 10. h4 {[%cal Od1e2]} c5 {[#] White is slightly better.} (10... hxg5 11. hxg5 Nh5 12. Rxh5 $18) (10... Qd5 11. c4) 11. dxc5 $1 {[#]} Qd5 $146 {[#]} ({Don't play} 11... hxg5 12. hxg5 g6 13. gxf6 Bxf6 14. Be4 $16) (11... Bxc5 12. Qc2) ({Predecessor:} 11... Bxc5 12. Qe2 e5 13. O-O-O Qb6 14. Nd2 Ng4 15. Ne4 Bxf2 16. Bd2 Be3 17. Bxe3 Qxe3+ 18. Qxe3 Nxe3 {1-0 (41) Arutyunova,D (2362)-Paulet,I (2167) Batumi 2006}) 12. Qe2 $1 {[%cal Oe1c1]} Rd8 {[#]} (12... hxg5 $2 13. hxg5 Rd8 14. gxf6 Bxf6 15. O-O-O Qxc5 16. Bh7+ Kf8 17. Rxd8+ Bxd8 18. Bd3 $18) ({Not} 12... Bxc5 {[#]} 13. O-O-O $1 $16) (12... Bd7 13. b4) 13. O-O-O $1 {[%cal Od3h7] Black must now prevent Bh7+!} Qxa2 (13... hxg5 $2 14. hxg5 Qxc5 15. gxf6 Bxf6 16. Bh7+ Kf8 17. Rxd8+ Bxd8 18. Bc2 $18) (13... Qxc5 14. Ne5) 14. Bb1 {Active counter play!} Rxd1+ (14... Qa5 $1 $14) 15. Rxd1 $16 Qa4 16. Bxf6 Bxf6 17. Qd3 {Inhibits Bd7. White wants to mate with Qh7+.} Kf8 18. Rd2 g6 19. h5 $1 $36 {[%mdl 2048] White is in control.} gxh5 20. g3 {Threatens to win with Qe3.} Qg4 (20... e5 $16 {is a better defense.}) 21. Qe3 {[%mdl 1024] White has strong compensation.} Kg7 $2 (21... a5 22. Qxh6+ Qg7 23. Qxh5 a4) 22. Ne5 $18 Qh3 23. f4 Kf8 24. Qd3 Qh1+ 25. Rd1 Qg2 26. Qh7 {[%csl Ge5][%cal Rh7f7]} Bg7 27. Rd8+ Ke7 {[#]} 28. Qxg7 $1 Kxd8 (28... Qg1+ 29. Kc2) 29. Qf8+ {Weighted Error Value: White=0.03 (flawless) /Black=0.72} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.2"]
[White "Pijpers, Arthur"]
[Black "Kozak, Antoni"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2485"]
[BlackElo "2356"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,104,14,20,21,43,37,36,33,45,32,60,56,152,146,191,180,186,99,104,64,75,14,68,80,85,49,48,54,71,73,73,73,94,91,231,214,211,218,219,203,217,176,267,59,55,70,70,60,64,0,0,0,0,0,0,-422,-400,-504,-502,-471,-402,-392,-386,-466,-370,-509,-472,-569,-558,-547,-521,-695,-525,-826,-808,-731,-731,-1247,-1239,-5004,-4810,-4170,-2372,-6949,-6485,-6270,-2769,-29983,-29984,-29984,-29985,-29983,-29980]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Ne7 6. c3 Nd7 7. O-O h6 8. a4 {B12: Caro-Kann: Advance Variation.} a5 9. Na3 Qb6 10. Nc2 {White is slightly better.} Bh7 {[#]} 11. b4 $146 ({Predecessor:} 11. Nfe1 Rc8 12. Bd3 Bxd3 13. Nxd3 c5 14. dxc5 Nxc5 15. Nxc5 Qxc5 16. Nd4 Nc6 17. Nb5 Nxe5 {1-0 (55) Glatthaar,M (2297)-Sukhodolsky,A (2482) ICCF email 2013}) 11... axb4 12. cxb4 Bxc2 (12... Qc7 $14) 13. Qxc2 $16 Nf5 (13... g5 $16 {keeps fighting.}) 14. a5 $18 Qd8 15. b5 (15. Bd2 $18) 15... c5 $16 16. dxc5 Bxc5 17. Bd2 (17. Qd2 $16) 17... O-O ({Black should play} 17... Nd4 $1 $11 18. Nxd4 Bxd4) 18. Ra4 $14 Be7 19. Bd3 (19. Rc1 {is more complex.} h5 20. h3 Nc5 21. Raa1 Ne4 22. Bd3) 19... Nc5 20. Ra2 Nxd3 21. Qxd3 Qd7 22. Rc1 Rfc8 23. Rxc8+ Rxc8 {[#]} (23... Qxc8 $16 24. g4 Nh4 25. Nxh4 Bxh4) 24. g4 $1 $18 Nh4 25. Nxh4 Bxh4 26. a6 bxa6 27. bxa6 Bg5 {[#]} (27... Bd8 $142) 28. f4 $2 ({Only move:} 28. Bc3 $1 $18) 28... Be7 $14 29. Be3 $1 {a7 is the strong threat.} Qc6 $1 30. Qd4 $1 {aiming for a7.} Qb5 $1 31. Qb2 {To avoid Qb1+} ({Better is} 31. Kg2 $14 Qc6 32. a7) 31... Qd3 $11 32. Qd2 Qb1+ 33. Kg2 Qe4+ 34. Kg3 $2 {[%mdl 8192]} (34. Kf2 $1 $11) 34... Bb4 $19 35. Qd4 {Black must now prevent Qxe4.} Be1+ 36. Rf2 Qxd4 37. Bxd4 {[%mdl 4096] Endgame KRB-KRB} Kf8 38. a7 Ke8 39. h4 Kd7 40. h5 Bxf2+ 41. Kxf2 {KR-KB} Kc6 42. Ke3 Kb7 {Strongly threatening ...g6.} 43. Kd2 Rc4 44. Ke3 g6 45. hxg6 fxg6 46. Bb6 h5 47. gxh5 gxh5 {Hoping for ...h4.} 48. Kf3 h4 {Threatens to win with ...h3.} 49. Kg4 h3 (49... d4 $142 50. Kxh4 d3) 50. Bg1 Rc1 {Black mates.} 51. Bh2 d4 {[%cal Bd5d4,Bd4d3][%mdl 32]} 52. f5 d3 {Both players deserved the win here.  Weighted Error Value: White=0.93/Black=0.33} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.3"]
[White "Sorm, Daniel"]
[Black "Haring, Filip"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "2348"]
[BlackElo "2398"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,80,40,16,17,8,12,-25,-17,-22,-23,-19,-20,-22,0,-39,-27,-36,-34,-95,-95,-104,-105,-229,-171,-161,-110,-110,-110,-111,-104,-110,-111,-122,-123,-117,-111,-108,0,-7,0,0,0,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-29975,-29963]} 1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. O-O c5 6. c4 g6 7. Nc3 Bg7 8. d5 (8. e4 {is interesting.} cxd4 9. Nxd4 O-O 10. Bg5 h6 11. Bh4) 8... exd5 {E14: Queen's Indian: Classical Variation (4 e3).} 9. cxd5 Nxd5 10. Nxd5 Bxd5 {Black has an edge.} 11. Bxg6 $1 hxg6 12. Qxd5 Nc6 {[%cal Bb8c6,Bc6e5,Be5f3][%mdl 32]} 13. e4 Qf6 14. Bg5 Qe6 15. Qd2 Ne5 16. Rad1 (16. Nxe5 $1 $15 Qxe5 17. h4) 16... Nxf3+ $17 17. gxf3 Bd4 {[#]} (17... Qh3 18. Qd6 Qe6 19. Qg3 $15) 18. Qe2 $146 (18. b3 $17) ({Predecessor:} 18. b3 Rh3 19. Qe2 Qe5 20. f4 Qh8 21. e5 Kf8 22. Qe4 Re8 23. Rxd4 cxd4 24. Rd1 {0-1 (38) Hoi,C (2430)-Psakhis,L (2605) Gausdal 1994}) 18... Rh5 (18... Qxa2 19. Be3 $17) 19. Be3 Ke7 ({Stronger than} 19... Qe5 20. f4 Qxe4 21. Rfe1 Bxe3 22. Qxe3 Qxe3 23. Rxe3+ Kd8 24. Red3 $15) (19... Qf6 $19 {( -> ...Qh4)} 20. Rfe1 Be5) 20. Bxd4 cxd4 21. f4 (21. h4 Rxh4) 21... Rah8 {Black is more active.} ({Of course not} 21... Qh3 $6 22. f3 $15) 22. f3 Rxh2 23. Qxh2 Rxh2 24. Kxh2 Qxa2 {[%mdl 4096] Endgame KQ-KRR} 25. Rd2 {[#]} a5 ({Better is} 25... d5 $1 $17 {White must now prevent ...dxe4.} 26. Re1 Qa5) 26. Rfd1 $11 Qb3 27. Kg3 Kf8 28. e5 b5 29. Rxd4 Qxb2 {[%cal Og6g5]} 30. Rxd7 {[%cal Oe5e6] Threatens to win with e6!} g5 31. R1d4 gxf4+ 32. Rxf4 Qxe5 33. Rdxf7+ Ke8 34. Rb7 a4 {And now ...a3 would win.} 35. Kg4 Qe6+ 36. Kg3 {Intending Re4 and mate.} Qe5 37. Kg4 {White threatens Re4 and mate.} Qe6+ 38. Kg3 {White wants to mate with Re4.} Qe1+ 39. Kg4 {Threatening mate with Re4+.} Qg1+ 40. Kf5 $2 {[%mdl 8192] [#]} (40. Kh3 $11) 40... Qc5+ {Weighted Error Value: White=0.36/Black=0.13 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.4"]
[White "Jurcik, Marian"]
[Black "Hrabusa, Matej"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2397"]
[BlackElo "2369"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,102,23,21,15,13,18,29,16,27,13,13,-14,-18,-21,-6,0,-11,-2,-11,-11,-1,-6,0,-10,0,-14,37,24,82,83,85,88,81,88,77,82,66,69,81,90,93,94,89,86,91,62,77,72,103,94,97,79,110,95,110,84,91,91,91,66,101,68,77,75,85,98,80,95,79,62,100,120,201,168,206,177,341,266,919,919,895,1346,1337,1258,992,915,1332,908,29969,29970,29970,29973,29972,29973,29973]} 1. e4 c5 2. Nc3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. d4 cxd4 6. Qxd4 {B23: Closed Sicilian: Lines without g3.} Nc6 7. Qd3 Rc8 8. Nf3 {White has an edge.} g6 9. Nd5 Bg7 {[#]} 10. c3 $146 ({Predecessor:} 10. O-O Nf6 11. Bg5 Nh5 12. c3 h6 13. Be3 O-O 14. Rad1 Rfd8 15. Qe2 e6 16. Nf4 Nxf4 17. Bxf4 {½-½ (35) Carnevale,R (2179)-Mostowik,D (2136) ICCF email 2012}) 10... e6 11. Nf4 Nge7 12. Be3 O-O 13. Rd1 Rfd8 14. O-O Qc7 15. Qb5 Rd7 16. Rd3 Rcd8 17. Rfd1 a6 (17... b6 $11) 18. Qb3 $14 Nc8 {To avoid Bb6} (18... Qc8 $1 $11) 19. Ng5 {[%cal Og5e6]} Ne5 {[#]} 20. Nfxe6 $1 {White is much more active.} fxe6 21. Nxe6 Qc4 22. Qxc4 Nxc4 23. Nxd8 Rxd8 24. Bc1 Re8 25. f3 b5 26. Kf1 Kf7 27. Re1 Ke6 28. f4 Rf8 29. Ke2 N4b6 30. Red1 Kd7 31. b3 Kc6 32. Be3 Re8 33. Kf3 Nd7 {[%cal Og6g5]} 34. Bd4 Bh8 35. Bxh8 Rxh8 36. e5 (36. Rd5 {feels hotter.} Rf8 37. g3 Ne5+ 38. Kg2 Nd7 39. R5d4) 36... Rf8 {White must now prevent ...Nxe5+.} 37. Rxd6+ Nxd6 38. Rxd6+ $16 {[%mdl 4096] Endgame KRN-KR} Kc7 {aiming for ...Nxe5+.} 39. Ke4 {[%mdl 1024] White has strong compensation.} (39. Rxa6 Nxe5+ 40. Ke3 Ng4+ 41. Ke4 Nf6+ 42. Kd4 Rd8+ 43. Kc5 Ne4+ 44. Kxb5 Nxc3+ 45. Kc5 Ne4+ 46. Kc4 Rd2 $15) 39... Nc5+ {[#]} 40. Kd5 $1 Nd7 (40... Nd3 $16 {was called for.}) 41. g3 g5 42. Ke6 ({Don't play} 42. fxg5 $6 Rf2 $16) 42... Nb8 (42... Nb6) 43. Ke7 ({Not} 43. fxg5 Rf3 $16) 43... Rh8 (43... Rc8 44. Rh6 (44. fxg5 Nc6+ 45. Kf6 Rg8 $16) 44... gxf4) 44. f5 $18 {f6 is the strong threat.} Nc6+ {[#]} 45. Rxc6+ $1 {[%mdl 512]} Kxc6 {KR-KP} 46. f6 {Hoping for e6.} Kd5 47. e6 Ke5 48. f7 Ra8 49. f8=Q {White mates.} Rxf8 50. Kxf8 Kxe6 51. Kg7 Kd5 {Weighted Error Value: White=0.11 (very precise) /Black=0.38} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.5"]
[White "Mikes, Jan"]
[Black "Czerw, Dawid"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "2329"]
[BlackElo "2396"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,83,16,0,27,29,18,-84,-84,-95,-83,-83,-87,-92,-85,-90,-77,-92,-25,-22,-21,-36,0,0,0,0,18,-7,20,-34,43,-42,0,-65,-61,-63,-62,-69,-57,-58,-21,-46,-31,-26,0,0,0,0,-8,-15,22,6,87,102,65,100,98,87,77,64,50,-102,-194,-196,-178,-163,0,-6,-35,0,-26,-340,-118,-193,-167,-211]} 1. c4 Nf6 2. Nc3 c6 3. Nf3 d5 4. e3 e6 5. b3 Nbd7 6. Bb2 Be7 {A11: English Opening: 1...c6.} 7. Qc2 O-O 8. g4 (8. d4 $11) 8... Nxg4 $17 {Black is better.} 9. Rg1 Nge5 10. Nxe5 Nxe5 {[#]} 11. O-O-O $146 {[%cal Oc3d5]} ({Predecessor:} 11. Be2 f6 12. f4 Ng6 13. O-O-O b6 14. Bg4 Re8 15. cxd5 cxd5 16. Kb1 b5 {1-0 (16) Rodriguez Gonzalez,A (1959)-Uribe Etxeberria Arregui,I (1655) Getxo 2019}) 11... Ng6 12. d4 f5 13. Bd3 b5 (13... dxc4 $17 14. Bxc4 Bd6) 14. cxb5 $11 cxb5 15. Bxb5 (15. Nxb5 {seems wilder.} Bd7 16. Kb1 Rb8 17. Nc3 Qa5 18. Rc1) 15... Bd7 16. Bxd7 Qxd7 17. Kb1 Rac8 18. Qd3 Bd6 19. Na4 (19. f4 $11) 19... Qe7 (19... Bxh2 $15 20. Rh1 (20. Nc5 Qe7 $11) 20... Bd6) 20. Nc5 (20. f4 $1 $14) 20... e5 (20... Bxc5 21. dxc5 f4 22. Qa6 $14) (20... Bxh2 $15 {should be considered.} 21. Rh1 Bd6) 21. b4 (21. Na4 $11 e4 22. Qb5) 21... e4 $15 22. Qb3 Qf7 23. b5 Bxh2 (23... Bxc5 24. dxc5 Rxc5 25. Ba3 $16) 24. Rh1 Bb8 25. Rdg1 Rcd8 26. a4 {[%cal Ba2a4,Ba4a5,Ba5a6][%mdl 32]} Rfe8 27. Na6 Bd6 28. Rc1 f4 29. a5 Bb8 30. Ba3 Nf8 (30... h6 $11 {remains equal.}) 31. Nxb8 $16 Rxb8 32. Bd6 {[%csl LRb8,LRf4]} Rb7 33. a6 (33. exf4 $6 Ne6 34. Be5 (34. Qxd5 Nxd4 35. Qxf7+ Kxf7 $15) 34... Qd7 $11) (33. Bxf4 $6 Ne6 $11) 33... Rb6 34. Rc7 {White is much more active.} Nd7 $1 35. Qb4 (35. Bc5 $14 {keeps the upper hand.} fxe3 36. Bxb6 (36. Rxa7 $2 exf2 37. Ka2 Rh6 $19) 36... exf2 37. Bxa7 (37. Qh3 Qg6 $17) 37... f1=Q+ 38. Rxf1 Qxf1+ 39. Rc1) 35... fxe3 $17 36. fxe3 Reb8 37. Rhc1 {[#] Rc8+ is the strong threat.} ({Avoid the trap} 37. Rxa7 $2 Rxb5 38. Rb7 R8xb7 39. axb7 Rxb4+ $19) 37... h6 $2 ({Black should try} 37... Qe8 $1 $19 38. Ka2 (38. Rxa7 $2 Rxb5 39. Rb7 Rxb4+ $19) 38... Rxb5) 38. Rc8+ $11 Rxc8 39. Rxc8+ Kh7 40. Bf4 $2 {[%mdl 8192]} (40. Rc1 $11) 40... Qg6 $2 (40... Qh5 $19 {has better winning chances. Hoping for ...Qe2.} 41. Rc2 Qd1+ 42. Kb2 Qf1) 41. Rc7 (41. Qb3 $17 {might work better.}) 41... Qg1+ $19 42. Ka2 {Weighted Error Value: White=0.38/Black=0.33} (42. Rc1 $142 Qg2 43. Bc7) 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.6"]
[White "Mannion, Stephen R"]
[Black "Plischki, Sebastian"]
[Result "1/2-1/2"]
[ECO "B41"]
[WhiteElo "2267"]
[BlackElo "2375"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,85,26,29,25,45,1,1,12,7,-16,0,-14,-5,-33,-37,-33,-29,-34,-50,-67,-63,-125,-117,-132,-131,-139,-137,-131,-135,-129,-129,-124,-129,-132,-125,-141,-142,-153,-122,-166,-135,-145,-159,-153,-138,-158,-159,-161,-164,-166,-139,-197,-191,-185,-205,-187,-175,-238,-206,-193,-191,-196,-189,-187,-194,-190,-190,-204,-204,-204,-187,-213,-8,-8,-8,-8]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 Bb4 7. Qd3 {B41: Sicilian: Kan Variation: 5 c4.} O-O 8. Be2 (8. e5 $14 {is more appropriate.} Ng4 9. Qg3) 8... d6 $11 9. O-O Nbd7 10. f3 Ne5 11. Qd1 Qc7 {[#]} 12. Be3 $146 ({Predecessor:} 12. Na4 Bd7 13. Be3 Qa5 14. b3 Bxa4 15. bxa4 d5 16. cxd5 exd5 17. Nb3 Qxa4 18. Bd4 {0-1 (71) Quparadze,G (2506)-Svidler,P (2765) Riadh 2017}) 12... Bxc3 13. bxc3 Nxc4 14. Bxc4 Qxc4 15. Qb3 Qc7 16. Rfd1 (16. Qa3 $15) 16... e5 17. Ne2 Be6 18. Qb6 Qxb6 19. Bxb6 d5 20. Bc7 dxe4 21. Bxe5 exf3 22. gxf3 Nd5 23. Kf2 Rac8 24. Rdb1 b6 25. Rg1 (25. Nf4 $17) 25... g6 {[%cal Bg7g6,Bg6g5][%mdl 32]} 26. h4 f6 27. Bd4 Kf7 28. h5 g5 ({Inferior is} 28... gxh5 29. Rh1 $11) 29. a4 Rc4 30. Rgb1 Rb8 31. Rb3 (31. Rb2 $17 {was worth a try.}) 31... Bd7 $19 32. a5 {[%cal Ra5b6]} b5 33. Ng3 f5 {[%cal Bf6f5,Bf5f4][%mdl 32] Inhibits Ne4.} 34. Nf1 (34. Rd1 {is a better defense.}) 34... Rbc8 {[%cal Rd5c3]} 35. Ne3 Nxe3 36. Kxe3 Re8+ 37. Kf2 f4 38. Rbb1 h6 39. Rb4 Be6 40. Re1 Rxb4 41. cxb4 Bc4 $2 {[#]} (41... Rd8 $19 42. Re4 Rd6) 42. Rxe8 $11 Kxe8 43. Bg7 {Weighted Error Value: White=0.14 (very precise) /Black=0.16 (very precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.7"]
[White "Van Osch, Mees"]
[Black "Carlsson, Ludvig"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "2364"]
[BlackElo "2355"]
[Annotator "ChessBase"]
[PlyCount "31"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:03]} e5 {[%emt 0:00:11]} 2. Nf3 {[%emt 0:00:05]} Nc6 {[%emt 0:00:08]} 3. Nc3 {[%emt 0:00:57]} Nf6 {[%emt 0:00:10]} 4. h3 {[%emt 0:00:32]} d5 {[%emt 0:00:44]} 5. exd5 {[%emt 0:00:15]} Nxd5 {[%emt 0:00:07]} 6. Bb5 {[%emt 0:00:07]} Nxc3 {[%emt 0:00:08]} 7. bxc3 {[%emt 0:00:06]} Bd6 {[%emt 0:00:11]} 8. O-O {[%emt 0:00:15]} O-O {[%emt 0:00:11]} 9. Re1 {[%emt 0:00:12]} Qf6 {[%emt 0:06:49]} 10. d4 {[%emt 0:00:11]} exd4 {[%emt 0:00:10]} 11. cxd4 {[%emt 0:00:04]} a6 {[%emt 0:10:04]} 12. Bd3 {[%emt 0:05:59]} Bf5 {[%emt 0:00:43]} 13. Rb1 {[%emt 0:11:13]} Bxd3 {[%emt 0:20:11]} 14. Qxd3 {[%emt 0:00:52]} b6 {[%emt 0:00:34]} 15. Bd2 {[%emt 0:10:38]} Qg6 {[%emt 0:04:26]} 16. Qxg6 {[%emt 0:02:15]} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.8"]
[White "Lim, Zhuo Ren"]
[Black "Vojta, Jakub"]
[Result "0-1"]
[ECO "D23"]
[WhiteElo "2311"]
[BlackElo "2289"]
[Annotator "ChessBase"]
[PlyCount "86"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:02:45]} Nf6 {[%emt 0:00:04]} 2. Nf3 {[%emt 0:00:13]} d5 {[%emt 0:00:05]} 3. c4 {[%emt 0:00:10]} dxc4 {[%emt 0:00:05]} 4. g3 {[%emt 0:00:08]} g6 {[%emt 0:03:51]} 5. Bg2 {[%emt 0:00:22]} Bg7 {[%emt 0:00:02]} 6. O-O {[%emt 0:00:35]} O-O {[%emt 0:00:03]} 7. Na3 {[%emt 0:00:22]} Nc6 {[%emt 0:00:06]} 8. Nxc4 {[%emt 0:00:38]} Be6 {[%emt 0:00:02]} 9. b3 {[%emt 0:01:48]} Bd5 {[%emt 0:00:03]} 10. Bb2 {[%emt 0:00:28]} a5 {[%emt 0:00:03]} 11. e3 {[%emt 0:06:28]} a4 {[%emt 0:03:09]} 12. Qe2 {[%emt 0:04:25]} Ra6 {[%emt 0:14:13]} 13. Rfd1 {[%emt 0:11:22]} Qa8 {[%emt 0:02:34]} 14. Ncd2 {[%emt 0:03:36]} Ne4 {[%emt 0:04:47]} 15. Ng5 {[%emt 0:26:18]} a3 {[%emt 0:10:12]} 16. Ndxe4 {[%emt 0:00:16]} axb2 {[%emt 0:00:02]} 17. Qxb2 {[%emt 0:00:05]} Nd8 {[%emt 0:04:48]} 18. Nc3 {[%emt 0:03:23]} Bxg2 {[%emt 0:00:55]} 19. Kxg2 {[%emt 0:00:02]} b5+ {[%emt 0:00:49]} 20. f3 {[%emt 0:02:41]} b4 {[%emt 0:03:37]} 21. Na4 {[%emt 0:00:25]} Qd5 {[%emt 0:13:39]} 22. Ne4 {[%emt 0:01:28]} f5 {[%emt 0:01:10]} 23. Nec5 {[%emt 0:02:09]} Ra5 {[%emt 0:08:01]} 24. Qe2 {[%emt 0:01:36]} Nf7 {[%emt 0:05:10]} 25. Rac1 {[%emt 0:02:11]} Nd6 {[%emt 0:03:00]} 26. Nd7 {[%emt 0:01:38]} Rd8 {[%emt 0:01:45]} 27. Rc5 {[%emt 0:01:13]} Rxc5 {[%emt 0:02:07]} 28. dxc5 {[%emt 0:02:17]} Qc6 {[%emt 0:00:22]} 29. cxd6 {[%emt 0:00:19]} Rxd7 {[%emt 0:00:06]} 30. dxe7 {[%emt 0:01:30]} Rxe7 {[%emt 0:00:08]} 31. Rd8+ {[%emt 0:01:22]} Kf7 {[%emt 0:00:22]} 32. Kf2 {[%emt 0:01:43]} Bf6 {[%emt 0:02:04]} 33. Qd3 {[%emt 0:03:39]} Kg7 {[%emt 0:00:36]} 34. Qd5 {[%emt 0:01:30]} Qc1 {[%emt 0:01:50]} 35. Qg8+ {[%emt 0:11:15]} Kh6 {[%emt 0:00:02]} 36. Qf8+ {[%emt 0:00:03]} Kh5 {[%emt 0:06:30]} 37. g4+ {[%emt 0:02:36]} fxg4 {[%emt 0:00:44]} 38. fxg4+ {[%emt 0:00:59]} Kxg4 {[%emt 0:00:56]} 39. h3+ {[%emt 0:01:14]} Kxh3 {[%emt 0:00:57]} 40. Qh6+ {[%emt 0:01:28]} Bh4+ {[%emt 0:00:06]} 41. Ke2 {[%emt 0:30:20]} Qe1+ {[%emt 0:31:51]} 42. Kd3 {[%emt 0:00:45]} Qd1+ {[%emt 0:01:30]} 43. Kc4 {[%emt 0:00:03]} Qxd8 {[%emt 0:00:24]} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.9"]
[White "Soucek, Petr"]
[Black "Torngren, Gustav"]
[Result "0-1"]
[ECO "C77"]
[WhiteElo "2117"]
[BlackElo "2228"]
[Annotator "TA"]
[PlyCount "162"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,162,25,27,33,16,25,12,3,10,30,30,33,0,29,14,28,37,34,45,40,26,43,0,0,0,0,0,0,-4,0,0,0,0,0,0,11,0,0,0,9,-7,14,0,0,-1,2,0,4,1,8,1,5,7,4,0,0,-27,0,0,0,-9,0,-12,0,-21,-14,-23,-16,-24,-23,-28,0,-8,0,0,0,0,0,-11,0,0,0,-7,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,0,0,0,0,0,0,0,-12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-9,0,0,0,-12,0,0,0,0,0,0,0,-6,-7,-7,-7,-7,-8,-9,0,0,0,-18,0,-35,-35,-430,-391,-29981,-29981]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 Bd6 6. c3 O-O {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6, unusual lines.} 7. O-O Re8 8. Nbd2 Bf8 {The position is equal.} 9. Re1 b5 10. Bc2 d5 11. Nf1 Bb7 12. Qe2 dxe4 13. dxe4 Na5 {[#]} 14. Bg5 $146 ({Predecessor:} 14. Ng3 g6 15. h4 c5 16. h5 Qc7 17. b3 Rad8 18. Bg5 Bg7 19. hxg6 hxg6 {1-0 (37) Zapata,A-Chavez Yanchapaxi,E (1994) Cuenca 2006}) 14... h6 {[#]} 15. Rad1 $1 Qe7 16. Bc1 (16. Bh4 $14) 16... Qe6 $11 17. Bb1 Nc4 18. N3d2 {[%cal Bf3d2,Bd2f1,Bf1g3,Bg3f5][%mdl 32]} Nd6 19. Ng3 Nd7 20. Nf5 Nc5 21. Nxd6 Bxd6 22. Nf1 Be7 23. Ng3 Rad8 24. Nf5 Bf8 25. f3 Kh7 26. Rxd8 Rxd8 27. Rd1 Qe8 28. Bc2 Ne6 29. g3 c6 30. Kg2 g6 {Threatens to win with ...Rxd1.} 31. Ne3 h5 {To avoid Ng4} 32. Bb3 Bc8 33. Nf1 Bc5 34. Be3 Rxd1 35. Qxd1 {Strongly threatening Bxe6.} Qe7 36. Qd3 Kg7 37. h4 Bxe3 38. Qxe3 Nc5 39. Qd2 a5 40. Kf2 (40. Bd1 {looks sharper.} Be6 41. a3 a4 42. Kf2 Bc4 43. Be2) 40... Nxb3 41. axb3 Be6 42. b4 a4 43. Kg2 Kf8 44. Kf2 Bb3 45. Ne3 Ke8 46. Nf1 Bc4 47. Ne3 Be6 48. Nc2 Bb3 49. Ne3 Qe6 50. Kg2 Ke7 51. Nf1 Bc4 52. Ne3 Ba2 53. Nc2 Ke8 54. Ne1 Bc4 55. Nc2 Qe7 56. Ne3 Be6 57. Nf1 Kf8 58. Qh6+ Kg8 59. Qd2 Kh7 60. Kf2 Kg7 61. Kg2 Kh7 62. Kf2 f6 63. Qd1 Kg7 64. Qd2 Bf7 65. Kg2 Qe6 66. Ne3 Qa2 67. Qc2 Bb3 68. Qf2 $1 Bf7 69. Qc2 Kh7 70. Qf2 Qb1 71. Qd2 Kg7 72. Nd1 Be6 73. Ne3 Kf7 74. Nd1 Ke7 75. Ne3 Qa2 {aiming for ...a3.} 76. Qc2 Bb3 77. Qf2 $1 Be6 78. Qc2 g5 79. Qf2 Qb1 {...g4 is the strong threat.} 80. Qc2 $2 {[%mdl 8192] [#]} (80. hxg5 $15 fxg5 81. Qe2) 80... Qe1 $1 $19 {[%csl LRe3,LRh4]} 81. Qf2 $2 {[#]} (81. Qd3 $19 Bh3+ 82. Kh2 gxh4 83. gxh4 Qxh4 84. Qe2) 81... Bh3+ $1 {[%mdl 512] Weighted Error Value: White=0.05 (flawless) /Black=0.04 (flawless)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.10"]
[White "Koubova, Anna Marie"]
[Black "Bochnicka, Vladimir"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "2148"]
[BlackElo "2222"]
[Annotator "ChessBase"]
[PlyCount "61"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:09]} f5 {[%emt 0:00:05]} 2. Nc3 {[%emt 0:00:16]} Nf6 {[%emt 0:00:17]} 3. Bg5 {[%emt 0:00:22]} e6 {[%emt 0:00:44]} 4. e4 {[%emt 0:00:47]} fxe4 {[%emt 0:02:34]} 5. Nxe4 {[%emt 0:00:51]} Be7 {[%emt 0:00:20]} 6. Bxf6 {[%emt 0:01:07]} Bxf6 {[%emt 0:00:12]} 7. Nf3 {[%emt 0:01:04]} O-O {[%emt 0:11:45]} 8. Bd3 {[%emt 0:08:56]} Nc6 {[%emt 0:11:15]} 9. Nxf6+ {[%emt 0:02:15]} Qxf6 {[%emt 0:00:44]} 10. O-O {[%emt 0:00:22]} b6 {[%emt 0:03:08]} 11. c3 {[%emt 0:06:54]} Bb7 {[%emt 0:04:23]} 12. Qc2 {[%emt 0:00:40]} g6 {[%emt 0:01:44]} 13. Be4 {[%emt 0:06:21]} d5 {[%emt 0:20:49]} 14. Bd3 {[%emt 0:00:38]} e5 {[%emt 0:00:10]} 15. Nxe5 {[%emt 0:01:56]} Nxe5 {[%emt 0:00:14]} 16. dxe5 {[%emt 0:00:09]} Qxe5 {[%emt 0:00:11]} 17. Rae1 {[%emt 0:02:06]} Qf6 {[%emt 0:00:54]} 18. Re3 {[%emt 0:07:45]} Rae8 {[%emt 0:04:14]} 19. Rfe1 {[%emt 0:19:37]} Qf7 {[%emt 0:07:38]} 20. h4 {[%emt 0:04:52]} Kg7 {[%emt 0:11:08]} 21. h5 {[%emt 0:02:35]} Bc6 {[%emt 0:02:42]} 22. hxg6 {[%emt 0:04:34]} hxg6 {[%emt 0:00:36]} 23. R1e2 {[%emt 0:00:51]} g5 {[%emt 0:08:57]} 24. Rh3 {[%emt 0:12:03]} Rh8 {[%emt 0:00:49]} 25. Qd2 {[%emt 0:02:50]} Qf6 {[%emt 0:02:06]} 26. Rxe8 {[%emt 0:03:03]} Bxe8 {[%emt 0:01:18]} 27. Rg3 {[%emt 0:02:10]} Kh6 {[%emt 0:00:25]} 28. Qe3 {[%emt 0:01:32]} Bd7 {[%emt 0:02:25]} 29. Rf3 {[%emt 0:01:14]} Qd6 {[%emt 0:00:46]} 30. Rf7 {[%emt 0:01:19]} c5 {[%emt 0:01:03]} 31. Qf3 {[%emt 0:03:36]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.11"]
[White "Jordanov, Mihail"]
[Black "Neuman, Petr"]
[Result "1/2-1/2"]
[ECO "B61"]
[WhiteElo "2193"]
[BlackElo "2402"]
[Annotator "ChessBase"]
[PlyCount "46"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:04]} c5 {[%emt 0:00:05]} 2. Nf3 {[%emt 0:00:04]} d6 {[%emt 0:00:04]} 3. d4 {[%emt 0:00:06]} cxd4 {[%emt 0:00:03]} 4. Nxd4 {[%emt 0:00:06]} Nf6 {[%emt 0:00:04]} 5. Nc3 {[%emt 0:00:06]} Nc6 {[%emt 0:00:03]} 6. Bg5 {[%emt 0:00:05]} Bd7 {[%emt 0:00:05]} 7. Qd2 {[%emt 0:00:14]} Rc8 {[%emt 0:00:14]} 8. Nxc6 {[%emt 0:00:11]} bxc6 {[%emt 0:02:17]} 9. Bc4 {[%emt 0:04:13]} h6 {[%emt 0:02:45]} 10. Bxf6 {[%emt 0:01:51]} exf6 {[%emt 0:05:25]} 11. O-O {[%emt 0:09:43]} Be7 {[%emt 0:00:06]} 12. Qd3 {[%emt 0:05:24]} O-O {[%emt 0:01:09]} 13. f4 {[%emt 0:01:46]} f5 {[%emt 0:08:43]} 14. e5 {[%emt 0:04:35]} d5 {[%emt 0:05:10]} 15. Bb3 {[%emt 0:00:20]} Be6 {[%emt 0:00:11]} 16. Rad1 {[%emt 0:08:37]} Qb6+ {[%emt 0:02:22]} 17. Kh1 {[%emt 0:00:15]} Rfd8 {[%emt 0:00:10]} 18. Qe2 {[%emt 0:08:08]} a5 {[%emt 0:01:44]} 19. Na4 {[%emt 0:01:27]} Qb7 {[%emt 0:07:17]} 20. Rfe1 {[%emt 0:03:49]} c5 {[%emt 0:05:00]} 21. c4 {[%emt 0:05:46]} d4 {[%emt 0:00:37]} 22. Bc2 {[%emt 0:02:59]} g6 {[%emt 0:00:41]} 23. b3 {[%emt 0:01:02]} Kg7 {[%emt 0:02:43]} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.12"]
[White "Blahynka, Martin"]
[Black "Kudrytskyi, Stanislav"]
[Result "1-0"]
[ECO "A21"]
[WhiteElo "2399"]
[BlackElo "2057"]
[Annotator "TA"]
[PlyCount "125"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,125,9,28,-12,-1,-13,7,0,0,2,20,2,19,10,27,34,30,26,30,25,20,21,26,3,46,32,67,62,72,58,110,68,88,58,27,-1,96,-15,-25,-11,-14,-72,-72,-157,-122,-129,-135,-131,0,0,0,-49,-49,-57,-60,-227,0,-10,0,0,0,0,0,0,10,16,27,17,17,0,155,97,77,0,139,120,121,50,35,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,261,67,60,49,4133,3155,1267,1229,988,957,29962,889,29986,29986,29986,29987,29993,29993]} 1. c4 e5 2. Nc3 Bb4 3. Nd5 Bc5 4. e3 c6 5. Nc3 Nf6 6. a3 {A21: English Opening: 1...e5 2 Nc3.} d5 {[#]} 7. cxd5 $146 ({Predecessor:} 7. b4 Bd6 8. Nf3 O-O 9. Be2 a5 10. c5 axb4 11. cxd6 bxc3 12. dxc3 Qxd6 13. c4 {0-1 (48) Maggi,L (1906)-Napoli,N (2389) Frascati 2009}) 7... cxd5 8. d4 {The position is equal.} exd4 9. exd4 Be7 10. Bd3 O-O 11. Nge2 Na6 12. O-O Nc7 13. Bf4 Bd7 14. h3 Bc6 15. b4 a6 {Inhibits b5.} 16. Qb3 Qd7 (16... Bd6 $11 {is superior.}) 17. Rfe1 b5 18. Be5 Nfe8 19. Nf4 Rd8 (19... Bg5 $14) 20. Nce2 {White is much more active.} (20. a4 $16) 20... Nd6 (20... f6 $2 21. Qc2 $1 f5 22. Rac1 $18) 21. Qc2 g6 $1 22. Ng3 {[%cal Og3h5]} Nc4 {[#]} (22... Nce8 $11) 23. Nfh5 f5 $11 24. Nf4 Bd6 25. Bxc4 (25. Rad1 $11 {remains equal.}) 25... dxc4 $17 26. d5 ({Better is} 26. Rad1) 26... Bxd5 (26... Nxd5 27. Bxd6 Qxd6 28. Ne6 $15) 27. Rad1 {[#]} Bxe5 $1 28. Rxe5 Qg7 29. Rexd5 $11 Nxd5 30. Rxd5 (30. Nxd5 $11 Qf7 31. Nc3) 30... Rxd5 $15 31. Nxd5 Qe5 32. Nc3 {[#]} (32. Qd2 $1 $15) 32... Rd8 $2 (32... Qe1+ $1 $19 33. Kh2 Rd8) 33. Nge2 Rd3 34. a4 f4 35. axb5 axb5 36. f3 Qe3+ 37. Kf1 Qe5 (37... Rd2 38. Qb1 $16 (38. Qe4 Qxe4 39. fxe4 g5 $11)) 38. Qc1 g5 39. Qa1 Qe7 $2 (39... h5 $11) 40. Qa8+ ({White should play} 40. Nxb5 Qxb4 41. Nbc3) 40... Kg7 $16 41. Qa1 (41. Qb8 $142 Qe3 42. Qb7+ (42. Qxb5 Rxc3 43. Qxg5+ Kf7 $16) 42... Kg8 43. Qc8+ (43. Qxb5 Rxc3 44. Qxg5+ Kf7 $16) 43... Kg7 44. Qb7+ Kg8 45. Qxb5 Rxc3 46. Qxg5+ (46. Nxc3 Qc1+ 47. Kf2 Qe3+ 48. Kf1 Qc1+ 49. Kf2 Qe3+ 50. Kf1 $11) 46... Kf7 47. Qf5+ (47. Nxc3 Qc1+ 48. Nd1 Qxd1+ 49. Kf2 Qd2+ 50. Kf1 Qd1+ 51. Kf2 Qd2+ 52. Kf1 Qd1+ $11) 47... Kg8 48. Qg5+ (48. Nxc3 Qxc3 49. Qg4+ Kh8 $16) 48... Kf7 49. Qf5+ (49. Nxc3 Qc1+ 50. Kf2 Qe3+ 51. Kf1 Qc1+ 52. Nd1 Qxd1+ 53. Kf2 Qd2+ 54. Kf1 Qd1+ 55. Kf2 Qd2+ 56. Kf1 Qd1+ $11) 49... Kg7 50. Nxc3 (50. Qg5+ Kf7 $16) 50... Qxc3 51. Qg5+ (51. Qxf4 Qa1+ 52. Kf2 Qb2+ 53. Kg3 Qxb4 $16) 51... Kh8 52. Qxf4 Qxb4 53. Qd4+ Kg8 54. h4) 41... Kg8 $1 42. Ne4 {And now Kg1 would win.} Qxb4 43. Kg1 ({But not} 43. Nxg5 $2 Qa4 44. Qxa4 (44. Qe5 $2 Rd1+ 45. Kf2 Qa7+ 46. Nd4 Qxd4+ $19) 44... bxa4 $19) ({Don't take} 43. Nf6+ $6 Kf7 44. Ne4 (44. Ng4 Rd2 $11) 44... Qe7 $14) (43. N2c3 $16) 43... Qe7 $1 $14 44. Qa6 {[%mdl 1024] White has compensation.} Qe5 45. Kh2 {Hoping for Qh6.} Kg7 {To avoid Qh6+} 46. Qb7+ Kg8 47. Qa8+ Kg7 48. Qa7+ Kg8 49. Qa5 h5 50. Qa8+ Kg7 51. Qb7+ Kg8 52. Qc8+ Kg7 53. h4 gxh4 54. Ng1 {Really sharp!} Qe7 {[%mdl 8192] Prevents Qb7.} (54... Rd4 $11 {and Black is okay.} 55. Qb7+ Kh8 56. Qc8+ Kh7 57. Qb7+ Kg8 58. Qc8+ Kh7 59. Qb7+ Kg8 60. Qc8+ Kh7) 55. Nh3 $2 (55. Qc6 $18) 55... Rd5 $1 56. Nxf4 {Pair of Knights!} Qe5 $2 {[%mdl 8192]} (56... Re5 $14) 57. Qb7+ $18 Kf8 58. Qxd5 Qxf4+ 59. Kh3 Qb8 60. Qf5+ (60. Qc5+ $142 Ke8 61. Qxh5+ Ke7 62. Qc5+ Ke6 63. Kg4 Qg8+ 64. Ng5+ Kd7 65. Qxb5+ Kd6 66. Kxh4) 60... Ke7 61. Qf6+ {White mates.} Kd7 62. Nc5+ Ke8 63. Qh8+ {Weighted Error Value: White=0.30/Black=0.51} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.13"]
[White "Cornelisse, John"]
[Black "Fus, Jakub"]
[Result "0-1"]
[ECO "E47"]
[WhiteElo "2173"]
[BlackElo "2384"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,56,33,34,22,29,24,18,32,25,-15,54,43,50,51,58,46,72,0,0,0,0,0,0,-68,-62,-64,-53,-48,-52,-52,-57,-57,-39,-40,19,-158,-145,-442,-433,-440,-420,-399,-395]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 {[%cal Bg1f3,Bf3d2,Bd2f1,Bf1e3,Be3g2][%mdl 32]} Nc6 7. O-O Bxc3 {7...Bxc3 scores better than 7...d5.} 8. bxc3 d6 9. Re1 {E41: Nimzo-Indian: Rubinstein: 4...c5 5 Bd3, including Hübner Variation.} e5 {[#] Strongly threatening ...e4.} 10. d5 Ne7 {And now ...e4 would win.} 11. Nd2 {To avoid e4. The position is equal.} Ng6 12. g3 Re8 (12... h6 $11) 13. e4 $14 {[#]} h6 $146 ({Predecessor:} 13... Bg4 14. f3 Bh3 15. Rb1 Qd7 16. Nf1 h5 17. Ne3 Nh7 18. Rb2 Rf8 19. Rf2 Rae8 {1-0 (42) Kovacs,G (2461)-Kvetny,M (2245) Germany 2012}) 14. Nf1 Nh7 15. Ne3 Ne7 16. f4 (16. a4 $16) 16... exf4 $11 17. gxf4 Ng6 $1 18. Ng2 {[%cal Oe4e5]} Qf6 {Inhibits e5.} 19. Qc2 ({White should play} 19. Rf1 $11) 19... Bh3 $15 {aiming for ...Bxg2.} 20. Rf1 Nhf8 {Black is more active.} 21. Rf2 Nh4 22. Nxh4 Qxh4 23. Be3 Nd7 24. Rf3 Nf6 (24... f5 $15) 25. Kh1 $2 {[#]} (25. Bf2 $1 $11 Qh5 26. Rg3) 25... Bg4 26. Rff1 {[%mdl 8192]} (26. Rg3 $17 b5 27. Rag1 (27. cxb5 c4 $17) 27... bxc4 28. Be2 Rxe4 29. Bxg4 Rxe3 30. Rxe3 Nxg4 31. Reg3) 26... Qh3 $19 27. Rae1 Bf3+ 28. Rxf3 Qxf3+ {Weighted Error Value: White=0.40/Black=0.15 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.14"]
[White "Grutter, Tim"]
[Black "Acor, Corey"]
[Result "1/2-1/2"]
[ECO "C82"]
[WhiteElo "2194"]
[BlackElo "2303"]
[Annotator "ChessBase"]
[PlyCount "73"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:02]} e5 {[%emt 0:03:37]} 2. Nf3 {[%emt 0:00:07]} Nc6 {[%emt 0:00:05]} 3. Bb5 {[%emt 0:00:05]} a6 {[%emt 0:01:41]} 4. Ba4 {[%emt 0:00:07]} Nf6 {[%emt 0:00:38]} 5. O-O {[%emt 0:00:06]} Nxe4 {[%emt 0:00:12]} 6. d4 {[%emt 0:02:15]} b5 {[%emt 0:00:14]} 7. Bb3 {[%emt 0:00:13]} d5 {[%emt 0:00:11]} 8. dxe5 {[%emt 0:00:11]} Be6 {[%emt 0:00:06]} 9. c3 {[%emt 0:02:59]} Bc5 {[%emt 0:00:14]} 10. Qd3 {[%emt 0:07:56]} O-O {[%emt 0:08:02]} 11. Nbd2 {[%emt 0:05:12]} Nxf2 {[%emt 0:11:24]} 12. Rxf2 {[%emt 0:02:08]} Bxf2+ {[%emt 0:00:08]} 13. Kxf2 {[%emt 0:00:13]} f6 {[%emt 0:00:23]} 14. exf6 {[%emt 0:07:08]} Qxf6 {[%emt 0:00:22]} 15. Kg1 {[%emt 0:15:01]} Rad8 {[%emt 0:01:19]} 16. h3 {[%emt 0:10:13]} Bf5 {[%emt 0:14:50]} 17. Qe2 {[%emt 0:02:29]} h6 {[%emt 0:03:25]} 18. Ne4 {[%emt 0:07:38]} Qg6 {[%emt 0:15:36]} 19. Nh4 {[%emt 0:04:40]} Qe6 {[%emt 0:05:09]} 20. Ng3 {[%emt 0:11:05]} Qxe2 {[%emt 0:04:55]} 21. Nxe2 {[%emt 0:00:03]} Bd3 {[%emt 0:00:17]} 22. Nf4 {[%emt 0:00:56]} Bc4 {[%emt 0:02:28]} 23. Nhg6 {[%emt 0:02:45]} Rf6 {[%emt 0:02:22]} 24. Be3 {[%emt 0:03:02]} Rdd6 {[%emt 0:08:13]} 25. Bc2 {[%emt 0:04:14]} d4 {[%emt 0:00:07]} 26. cxd4 {[%emt 0:00:36]} Nxd4 {[%emt 0:00:20]} 27. Bxd4 {[%emt 0:00:21]} Rxd4 {[%emt 0:00:02]} 28. Re1 {[%emt 0:01:31]} Rdxf4 {[%emt 0:12:38]} 29. Re8+ {[%emt 0:03:27]} Rf8 {[%emt 0:00:02]} 30. Ne7+ {[%emt 0:01:28]} Kh8 {[%emt 0:00:13]} 31. Ng6+ {[%emt 0:00:10]} Kg8 {[%emt 0:00:03]} 32. Nxf8 {[%emt 0:01:10]} Rxf8 {[%emt 0:00:40]} 33. Bh7+ {[%emt 0:00:08]} Kf7 {[%emt 0:00:26]} 34. Bg6+ {[%emt 0:00:12]} Kg8 {[%emt 0:00:11]} 35. Bh7+ {[%emt 0:00:39]} Kf7 {[%emt 0:00:02]} 36. Bg6+ {[%emt 0:00:09]} Kg8 37. Re1 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.15"]
[White "Unneland, Mathias"]
[Black "Azhar, Puteri Munajjah Az-Z"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "2262"]
[BlackElo "2052"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,51,70,76,75,66,68,70,68,75,159,176,206,203,199,113,404,81,80,85,71,95,748,750,741,731,741,745,700,677,650,294,800,783,1635,1615,1454,1463,2054,1995,1769,1294]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. d4 exd4 5. Nxd4 Nxd4 6. Qxd4 Qf6 7. Qd3 Qg6 {C45: Scotch Game.} 8. O-O Nf6 9. Nc3 Be7 {White is slightly better.} 10. f4 {[%cal Bf2f4,Bf4f5][%mdl 32] [#]} h5 $146 (10... Qh5 $142) ({Predecessor:} 10... Bd7 11. a4 a6 12. Bd2 h5 13. f5 Qh7 14. Nd5 Bd8 15. Bc3 O-O 16. Bxf6 gxf6 {1-0 (35) Haraldsson,O (1733)-Sigurvaldason,H (1491) Reykjavik 2018}) 11. f5 $16 Qh7 12. Nb5 Bd8 13. Bg5 (13. e5 $1 $18 {[%cal Re5f6]} dxe5 14. Bg5) 13... a6 $2 {[%mdl 8192] [#]} (13... Bd7 $16 {might work better.}) 14. e5 $2 axb5 15. Bxb5+ ({Don't blunder} 15. exf6 $2 bxc4 16. Rae1+ Kd7 $19) 15... Nd7 16. exd6 {White is much more active. Black has bad knights.} Bxg5 $4 {[%mdl 8192] [#]} (16... O-O $16 17. Bxd8 c6) 17. Rae1+ $1 $18 Kd8 18. dxc7+ Kxc7 {[#]} 19. Qg3+ $1 Kd8 20. Qxg5+ f6 21. Qe3 (21. Qd2 $142) 21... g5 $2 (21... Qg8 22. Rd1 Kc7) 22. fxg6 {White is clearly winning.} Qg7 23. Rd1 {Qb6+ would kill now.} Kc7 {Inhibits Qb6+.} 24. Qe6 {White threatens Qd6+ and mate.} Ra6 {Inhibits Qd6+.} 25. Bxa6 bxa6 26. Rf3 {Weighted Error Value: White=0.82/Black=0.52} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.16"]
[White "Ronce, Nathan"]
[Black "Macicek, Jakub"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2171"]
[BlackElo "2250"]
[Annotator "ChessBase"]
[PlyCount "139"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:10:21]} Nf6 {[%emt 0:00:20]} 2. c4 {[%emt 0:00:09]} e6 {[%emt 0:00:07]} 3. Nf3 {[%emt 0:00:12]} d5 {[%emt 0:01:29]} 4. Nc3 {[%emt 0:00:39]} Be7 {[%emt 0:02:45]} 5. Bf4 {[%emt 0:00:30]} O-O {[%emt 0:01:15]} 6. e3 {[%emt 0:00:36]} c6 {[%emt 0:01:01]} 7. Bd3 {[%emt 0:02:51]} Nbd7 {[%emt 0:08:50]} 8. c5 {[%emt 0:00:42]} Nh5 {[%emt 0:08:00]} 9. O-O {[%emt 0:05:26]} Nxf4 {[%emt 0:00:08]} 10. exf4 {[%emt 0:00:05]} b6 {[%emt 0:01:38]} 11. b4 {[%emt 0:01:50]} a5 {[%emt 0:00:17]} 12. a3 {[%emt 0:00:49]} Ba6 {[%emt 0:01:09]} 13. Bxa6 {[%emt 0:11:17]} Rxa6 {[%emt 0:01:32]} 14. Qd3 {[%emt 0:01:25]} b5 {[%emt 0:07:46]} 15. Rfb1 {[%emt 0:10:49]} a4 {[%emt 0:01:23]} 16. Re1 {[%emt 0:04:08]} Bf6 {[%emt 0:02:23]} 17. Ne5 {[%emt 0:03:22]} Qc7 {[%emt 0:02:09]} 18. g3 {[%emt 0:09:13]} Raa8 {[%emt 0:03:45]} 19. h4 {[%emt 0:01:55]} g6 {[%emt 0:09:51]} 20. Re2 {[%emt 0:06:43]} Bg7 {[%emt 0:00:38]} 21. Rae1 {[%emt 0:00:38]} Rae8 {[%emt 0:00:50]} 22. h5 {[%emt 0:08:55]} Bxe5 {[%emt 0:23:25]} 23. dxe5 {[%emt 0:00:59]} Kh8 {[%emt 0:07:34]} 24. Qd4 {[%emt 0:07:48]} Kg7 {[%emt 0:01:13]} 25. Kg2 {[%emt 0:01:26]} Rg8 {[%emt 0:00:29]} 26. Nb1 {[%emt 0:05:15]} Kf8 {[%emt 0:00:18]} 27. Nd2 {[%emt 0:00:28]} Ke7 {[%emt 0:00:32]} 28. Nf3 {[%emt 0:00:24]} Kd8 {[%emt 0:01:27]} 29. Rh1 {[%emt 0:00:54]} Nf8 {[%emt 0:00:48]} 30. Ree1 {[%emt 0:01:42]} Kc8 {[%emt 0:00:23]} 31. hxg6 {[%emt 0:00:33]} fxg6 {[%emt 0:00:30]} 32. Rh6 {[%emt 0:00:17]} Rg7 {[%emt 0:00:23]} 33. Reh1 {[%emt 0:00:23]} Kb7 {[%emt 0:00:24]} 34. Ng5 {[%emt 0:00:46]} Ree7 {[%emt 0:00:30]} 35. Kf1 {[%emt 0:00:47]} Ka6 {[%emt 0:00:16]} 36. Ke2 {[%emt 0:00:22]} Kb7 {[%emt 0:00:04]} 37. Kd2 {[%emt 0:01:47]} Qd7 {[%emt 0:00:06]} 38. Kc3 {[%emt 0:00:12]} Qc7 {[%emt 0:00:16]} 39. Rd1 {[%emt 0:00:12]} Ka6 {[%emt 0:00:18]} 40. Rdh1 {[%emt 0:00:33]} Kb7 {[%emt 0:00:16]} 41. Kb2 {[%emt 0:30:06]} Ka6 {[%emt 0:30:24]} 42. R1h4 {[%emt 0:00:41]} Kb7 {[%emt 0:00:58]} 43. Nf3 {[%emt 0:00:00]} Qd7 {[%emt 0:00:00]} 44. Rh1 {[%emt 0:00:00]} Ref7 {[%emt 0:00:00]} 45. Qe3 {[%emt 0:00:00]} Qe8 {[%emt 0:00:00]} 46. Kc2 {[%emt 0:00:00]} Rc7 {[%emt 0:00:00]} 47. Ng5 {[%emt 0:00:00]} Rce7 {[%emt 0:00:00]} 48. Qd4 {[%emt 0:00:00]} Rc7 {[%emt 0:00:00]} 49. Kd2 {[%emt 0:00:00]} Rce7 {[%emt 0:00:00]} 50. Ke2 {[%emt 0:00:00]} Rc7 {[%emt 0:00:00]} 51. Kf1 {[%emt 0:00:00]} Rce7 {[%emt 0:00:00]} 52. Kg2 {[%emt 0:00:00]} Rc7 {[%emt 0:00:00]} 53. Rd1 {[%emt 0:00:00]} Rce7 {[%emt 0:00:00]} 54. Qe3 {[%emt 0:00:00]} Rc7 {[%emt 0:00:00]} 55. g4 {[%emt 0:00:00]} Rce7 {[%emt 0:00:00]} 56. Nf3 {[%emt 0:00:00]} Rc7 {[%emt 0:00:00]} 57. g5 {[%emt 0:00:42]} Rce7 {[%emt 0:00:00]} 58. Rc1 {[%emt 0:01:34]} Kb8 {[%emt 0:00:00]} 59. Nd4 {[%emt 0:00:30]} Rb7 {[%emt 0:00:00]} 60. Nf3 {[%emt 0:02:02]} Rbe7 {[%emt 0:00:00]} 61. Nh2 {[%emt 0:00:11]} Qd7 {[%emt 0:00:00]} 62. Rd1 {[%emt 0:00:14]} Qc7 {[%emt 0:00:00]} 63. Ng4 {[%emt 0:00:05]} Kb7 {[%emt 0:00:00]} 64. Nf6 {[%emt 0:00:05]} Kb8 {[%emt 0:00:28]} 65. Rd4 {[%emt 0:00:13]} Kb7 {[%emt 0:00:22]} 66. Rh1 {[%emt 0:00:49]} Ka6 {[%emt 0:01:33]} 67. Qh3 {[%emt 0:00:10]} Kb7 {[%emt 0:00:15]} 68. Qh6 {[%emt 0:01:58]} Ka7 {[%emt 0:00:24]} 69. Rhd1 {[%emt 0:00:07]} Kb7 {[%emt 0:00:12]} 70. Rh1 {[%emt 0:00:47]} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.17"]
[White "Dev, Shah"]
[Black "Walter, Ema"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2243"]
[BlackElo "2000"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,73,0,17,17,28,27,52,40,116,49,82,62,114,105,147,130,149,131,170,170,188,173,435,448,524,513,541,555,578,571,545,461,460,472,464,458,456,430,860,867,858,839,993,880,832,774,728,716,694,602,950,951,1164,1135]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 h6 7. Bh4 c6 8. Bd3 O-O 9. Qc2 Re8 10. Nge2 Nbd7 11. f3 Nf8 {Recently 11...b5 got a lot of attention.} 12. Bf2 {D36: Queen's Gambit Declined: Exchange Variation: Main line (5 Bg5 c6 6 Qc2).} b6 13. O-O Bb7 14. Rad1 {[#] White is slightly better.} Bd6 $146 {[#]} (14... Ne6 $14) ({Predecessor:} 14... Ne6 15. e4 dxe4 16. fxe4 Ng4 17. Bc4 Bg5 18. Ng3 Be3 19. Bxe3 Nxe3 20. Qf2 Nxc4 21. Qxf7+ {1-0 (37) Riline Orso,A (2136)-Martinez Reyes,P (2408) Lichess.org INT 2021}) 15. Kh1 (15. e4 $1 $16) 15... Rc8 16. Bf5 {White leaves nothing to chance now.} Rc7 {[#]} (16... N6d7 $14) 17. e4 $1 $16 {[%cal Be3e4,Be4e5][%mdl 32]} g6 ({Black should try} 17... N6d7) 18. Bh3 Nh5 19. e5 Be7 20. Be3 Kh7 21. f4 {[%cal Bf3f4,Bf4f5][%mdl 32]} f5 $2 {[#]} (21... Kg8 {keeps fighting.} 22. f5 Bg5) 22. Bxf5 $1 $18 {[%mdl 512] White is clearly winning.} Bc8 (22... Ba6 23. Bh3) 23. Bxc8 Qxc8 24. f5 Bg5 25. Bxg5 hxg5 26. fxg6+ Nxg6 27. Rf5 Kh6 28. Rdf1 {[%cal Of5g5] Rxg5! is the strong threat.} Nh4 29. R5f2 ({Less strong is} 29. Rf7 Rxf7 30. Rxf7 Ng6 31. Rxa7 Re7 $18) 29... Ree7 (29... Ng6 $142 30. g3 Rg8) 30. g3 Ng6 31. Rf5 a6 32. Qd2 Nhf4 33. Rf6 ({Avoid the trap} 33. Nxf4 $2 Qxf5 34. Nce2 Rf7 $19) 33... Qh3 34. Rf2 Nh5 35. R6f3 Rcd7 36. Nd1 c5 37. Ne3 {Weighted Error Value: White=0.13 (very precise) /Black=0.46} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.18"]
[White "Pham, Khoi"]
[Black "Cholleti Sahajasri"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "2114"]
[BlackElo "2235"]
[Annotator "TA"]
[PlyCount "1"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 1,1,16]} 1. e4 {Not much happened in this game.} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.19"]
[White "Goossens, Hanne"]
[Black "Matras, Ondrej"]
[Result "0-1"]
[ECO "C03"]
[WhiteElo "2133"]
[BlackElo "2223"]
[Annotator "ChessBase"]
[PlyCount "96"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:06]} e6 {[%emt 0:00:00]} 2. d4 {[%emt 0:00:15]} d5 {[%emt 0:00:00]} 3. Nd2 {[%emt 0:00:12]} a6 {[%emt 0:00:00]} 4. Ngf3 {[%emt 0:00:54]} c5 {[%emt 0:00:00]} 5. dxc5 {[%emt 0:04:48]} Bxc5 {[%emt 0:00:00]} 6. Bd3 {[%emt 0:00:58]} Nf6 {[%emt 0:00:00]} 7. Qe2 {[%emt 0:02:55]} Be7 {[%emt 0:02:51]} 8. exd5 {[%emt 0:04:09]} exd5 {[%emt 0:00:08]} 9. Nd4 {[%emt 0:03:30]} O-O {[%emt 0:01:20]} 10. Nf5 {[%emt 0:01:53]} Re8 {[%emt 0:01:04]} 11. O-O {[%emt 0:01:09]} Bf8 {[%emt 0:02:29]} 12. Qf3 {[%emt 0:04:53]} Nc6 {[%emt 0:01:23]} 13. Nb3 {[%emt 0:06:41]} Ne5 {[%emt 0:06:54]} 14. Qg3 {[%emt 0:02:18]} Kh8 {[%emt 0:00:36]} 15. Bg5 {[%emt 0:02:13]} Nxd3 {[%emt 0:04:11]} 16. Qxd3 {[%emt 0:00:24]} Qd7 {[%emt 0:01:29]} 17. Ne3 {[%emt 0:04:23]} Ne4 {[%emt 0:02:32]} 18. Bf4 {[%emt 0:03:09]} g5 {[%emt 0:04:11]} 19. Bg3 {[%emt 0:04:42]} f5 {[%emt 0:00:12]} 20. Nxd5 {[%emt 0:10:04]} f4 {[%emt 0:03:43]} 21. Rae1 {[%emt 0:04:29]} fxg3 {[%emt 0:03:38]} 22. Rxe4 {[%emt 0:01:47]} gxh2+ {[%emt 0:00:48]} 23. Kxh2 {[%emt 0:03:40]} Qd6+ {[%emt 0:01:06]} 24. Kg1 {[%emt 0:04:57]} Bf5 {[%emt 0:02:08]} 25. Rxe8 {[%emt 0:04:20]} Bxd3 {[%emt 0:00:11]} 26. Rxa8 {[%emt 0:00:07]} Bxf1 {[%emt 0:00:10]} 27. Kxf1 {[%emt 0:00:07]} Qxd5 {[%emt 0:00:14]} 28. Rxf8+ {[%emt 0:00:26]} Kg7 {[%emt 0:00:02]} 29. Re8 {[%emt 0:00:39]} Qd1+ {[%emt 0:00:43]} 30. Re1 {[%emt 0:00:06]} Qxc2 {[%emt 0:00:18]} 31. Kg1 {[%emt 0:03:31]} Qxb2 {[%emt 0:00:25]} 32. Re7+ {[%emt 0:00:09]} Kg6 {[%emt 0:00:41]} 33. Rxb7 {[%emt 0:00:08]} Qxa2 {[%emt 0:00:17]} 34. f3 {[%emt 0:05:03]} a5 {[%emt 0:00:46]} 35. Rb6+ {[%emt 0:00:15]} Kf7 {[%emt 0:00:27]} 36. Rb7+ {[%emt 0:00:21]} Ke8 {[%emt 0:00:17]} 37. Nxa5 {[%emt 0:00:42]} Qxa5 {[%emt 0:01:32]} 38. Rxh7 {[%emt 0:00:07]} Qb6+ {[%emt 0:00:59]} 39. Kh2 {[%emt 0:00:26]} Qb8+ {[%emt 0:03:44]} 40. g3 {[%emt 0:12:59]} Qe5 {[%emt 0:00:29]} 41. Rh5 {[%emt 0:34:57]} Kf7 {[%emt 0:30:47]} 42. Kh3 {[%emt 0:00:00]} Qf5+ {[%emt 0:31:28]} 43. Kg2 {[%emt 0:00:00]} Qc2+ {[%emt 0:00:02]} 44. Kh3 {[%emt 0:00:00]} Kg6 {[%emt 0:00:13]} 45. Rh8 {[%emt 0:00:00]} Qd1 {[%emt 0:00:11]} 46. Rg8+ {[%emt 0:00:00]} Kh6 {[%emt 0:00:37]} 47. Rh8+ {[%emt 0:00:00]} Kg7 {[%emt 0:00:14]} 48. Rh5 {[%emt 0:00:00]} Kg6 {[%emt 0:00:04]} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.20"]
[White "Michalczak, Thomas"]
[Black "Mach, Ondrej"]
[Result "1-0"]
[ECO "A47"]
[WhiteElo "2218"]
[BlackElo "1893"]
[Annotator "ChessBase"]
[PlyCount "81"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:03:40]} Nf6 {[%emt 0:00:13]} 2. Nf3 {[%emt 0:00:06]} b6 {[%emt 0:00:04]} 3. Bg5 {[%emt 0:00:26]} Ne4 {[%emt 0:01:01]} 4. Bh4 {[%emt 0:00:11]} Bb7 {[%emt 0:00:29]} 5. Nbd2 {[%emt 0:00:15]} d5 {[%emt 0:04:42]} 6. e3 {[%emt 0:01:24]} Nxd2 {[%emt 0:05:51]} 7. Qxd2 {[%emt 0:00:07]} c5 {[%emt 0:01:02]} 8. dxc5 {[%emt 0:03:57]} bxc5 {[%emt 0:00:26]} 9. Bb5+ {[%emt 0:00:43]} Bc6 {[%emt 0:01:24]} 10. Bxc6+ {[%emt 0:00:37]} Nxc6 {[%emt 0:00:09]} 11. Rd1 {[%emt 0:02:10]} Qb6 {[%emt 0:00:50]} 12. Qxd5 {[%emt 0:00:32]} Rd8 {[%emt 0:00:45]} 13. Qb3 {[%emt 0:00:21]} Rxd1+ {[%emt 0:01:48]} 14. Kxd1 {[%emt 0:00:07]} e6 {[%emt 0:14:23]} 15. Nd2 {[%emt 0:25:55]} Qa6 {[%emt 0:02:33]} 16. Qc4 {[%emt 0:00:34]} Qb7 {[%emt 0:03:50]} 17. Kc1 {[%emt 0:03:40]} Bd6 {[%emt 0:06:41]} 18. Ne4 {[%emt 0:11:30]} Be5 {[%emt 0:05:04]} 19. c3 {[%emt 0:00:08]} O-O {[%emt 0:02:00]} 20. Nxc5 {[%emt 0:00:10]} Qc7 {[%emt 0:01:12]} 21. Bg3 {[%emt 0:21:26]} Rd8 {[%emt 0:08:35]} 22. Rd1 {[%emt 0:00:48]} Rxd1+ {[%emt 0:03:08]} 23. Kxd1 {[%emt 0:00:06]} Qd6+ {[%emt 0:06:01]} 24. Ke2 {[%emt 0:00:11]} Bxg3 {[%emt 0:03:09]} 25. hxg3 {[%emt 0:00:08]} h6 {[%emt 0:00:42]} 26. b4 {[%emt 0:00:29]} Qe5 {[%emt 0:03:33]} 27. Nd3 {[%emt 0:01:52]} Qd6 {[%emt 0:01:11]} 28. Qc5 {[%emt 0:00:21]} Qd7 {[%emt 0:00:56]} 29. a4 {[%emt 0:01:32]} Ne7 {[%emt 0:03:00]} 30. b5 {[%emt 0:01:26]} Nd5 {[%emt 0:01:11]} 31. Ne5 {[%emt 0:01:28]} Qd8 {[%emt 0:01:35]} 32. e4 {[%emt 0:04:08]} Nb6 {[%emt 0:09:36]} 33. a5 {[%emt 0:02:03]} Na4 {[%emt 0:00:44]} 34. Qb4 {[%emt 0:00:15]} Qg5 {[%emt 0:02:53]} 35. Qxa4 {[%emt 0:05:25]} Qxe5 {[%emt 0:00:08]} 36. Qb4 {[%emt 0:00:09]} Qg5 {[%emt 0:01:12]} 37. b6 {[%emt 0:01:12]} Qc1 {[%emt 0:04:27]} 38. Qb3 {[%emt 0:00:22]} axb6 {[%emt 0:00:15]} 39. axb6 {[%emt 0:00:07]} Qa1 {[%emt 0:00:06]} 40. b7 {[%emt 0:00:24]} Qa6+ {[%emt 0:00:06]} 41. c4 {[%emt 0:30:16]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.21"]
[White "Rousek, Jan"]
[Black "Bomans, Arno"]
[Result "0-1"]
[ECO "D71"]
[WhiteElo "1908"]
[BlackElo "2246"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,61,21,16,14,11,0,0,-6,-10,-6,-17,-16,0,-11,0,-10,0,0,0,-14,0,-29,-61,-32,0,-83,-77,-140,-136,-151,-157,-566,-562,-647,-638,-593,-631,-614,-567,-581,-541,-1016,-986,-833,-730,-715,-696,-29998,-29999,-29999]} 1. d4 {[%cal Bd2d4,Bd4d5][%mdl 32]} Nf6 2. c4 g6 3. g3 c5 4. d5 d6 5. Nc3 Bg7 6. Bg2 O-O 7. Nf3 e6 8. O-O {E64: King's Indian: Fianchetto: 6...c5 7 d5.} exd5 9. Nxd5 Nxd5 10. cxd5 {The position is equal.} Re8 11. Re1 {[#]} Nd7 $146 ({Predecessor:} 11... b5 12. e4 Bg4 13. h3 Bxf3 14. Qxf3 Nd7 15. Qe2 c4 16. a4 a6 17. Be3 Ne5 {0-1 (52) Jordaan,W (1529)-Kahl,F (2302) LSS email 2015}) 12. e4 a6 13. a4 Rb8 {[%cal Ba8b8,Bb8b6,Bb6b4][%mdl 32]} 14. a5 b5 15. axb6 Rxb6 16. Rb1 Rb4 17. Nd2 Ne5 18. Qc2 {Inhibits Nd3.} c4 19. Bf1 {[#]} (19. b3 $1 $11) 19... Bd7 $1 $17 20. Ra1 {Inhibits Ba4.} (20. Re3 $142) 20... Qb6 21. Kg2 Rc8 {[%cal Be8c8,Bc8c4,Bc4a4][%mdl 32] Black is much more active.} (21... c3 22. bxc3 Ng4 23. Nf3 (23. Nc4 Rxc4 24. Bxc4 Bxc3 $11) 23... Bxc3 24. Rxa6 $11 (24. Qxc3 Qxf2+ 25. Kh1 Rbxe4 $17)) 22. f4 $2 {Loses the game.} (22. Be2 $17 {is a better chance.}) 22... Ng4 $19 {( -> ...Qf2+)} 23. Nxc4 {[#]} Rbxc4 {[%mdl 512]} 24. Bxc4 {[#]} Rxc4 $1 {[%mdl 512]} 25. Qd2 Ba4 26. Rxa4 Rxa4 27. Qc2 {[#]} Rc4 {[%mdl 512] Prevents Qc8+.} 28. Qe2 {[#]} h5 $1 {[%cal Oc4e4][%mdl 512] And now ...Rxe4! would win.} 29. h3 {[#]} Rxe4 $1 {[%mdl 512]} 30. Qxe4 (30. Qd2 Rxe1) 30... Qf2+ 31. Kh1 Qh2# {Weighted Error Value: White=0.99/Black=0.10 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.22"]
[White "Oye-Stromberg, Alexander"]
[Black "Kukucka, Matej"]
[Result "1-0"]
[ECO "C03"]
[WhiteElo "2238"]
[BlackElo "2104"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,83,-13,-5,-21,0,-42,-17,-18,0,0,9,0,46,34,41,40,49,-24,0,0,3,12,5,0,0,-29,0,0,42,28,27,33,45,42,36,47,80,74,129,129,129,134,117,127,252,250,250,249,234,222,460,283,289,268,392,389,386,386,375,368,341,274,368,368,463,463,411,401]} 1. e4 e6 2. d4 d5 3. Nd2 a6 4. Ngf3 c5 5. exd5 exd5 6. dxc5 Bxc5 7. Nb3 Bb6 8. Be2 Nf6 9. O-O O-O 10. Nbd4 {C08: French Tarrasch: 3...c5 4 exd5 exd5 sidelines.} Nc6 11. h3 (11. Be3 $11) 11... Qd6 12. Be3 {The position is equal.} Bc7 {[#]} 13. Re1 $146 ({Predecessor:} 13. Bd3 Re8 14. Ne2 Rxe3 15. fxe3 Ne5 16. Ned4 Bxh3 17. Rf2 Bg4 18. Be2 Ne4 19. Nxe5 Qxe5 20. Rf4 g5 21. Rxe4 Qh2+ 22. Kf1 Qh1+ 23. Kf2 Bg3+ 24. Kxg3 Qh4# {0-1 (24) Pettersson,G-Nygren,T Sweden 1986}) 13... Ne4 14. Bd3 f5 (14... Re8 $11 {is superior.}) 15. Nxc6 $14 bxc6 16. c4 $1 Re8 17. c5 (17. cxd5 $14 cxd5 18. Rc1) 17... Qf8 (17... Nxc5 $2 18. Bxc5 Rxe1+ 19. Qxe1 $18) (17... Qg6 $5 {[%cal Rf5f4]}) 18. b4 Bd7 19. Bd4 a5 20. a3 h6 21. Bb2 Qf7 (21... Rab8 $5 {[%cal Ra5b4]}) 22. Qc2 Re7 (22... Qg6 $11 {feels stronger.}) 23. Nd4 {[%cal Bf3d4,Bd4b5,Bb5d6][%mdl 32]} Rae8 24. b5 Nxc5 $1 25. Rxe7 Qxe7 26. bxc6 Nxd3 27. Qxd3 {Black is now going downhill.} Bc8 ({Better is} 27... Qe1+ 28. Rxe1 Rxe1+ 29. Qf1 Rxf1+ 30. Kxf1 Bc8) 28. Nb5 $16 {White is more active.} Qe1+ 29. Qf1 Qxf1+ 30. Rxf1 Be5 (30... Bb6 $16 {was called for.}) 31. Bxe5 $18 Rxe5 {[%mdl 4096] Endgame KRB-KRN} 32. Nd6 Ba6 {[#]} 33. c7 $1 Re2 $2 (33... d4 34. c8=Q+ Bxc8) 34. c8=Q+ Bxc8 35. Nxc8 {aiming for Rd1. KRN-KR} Ra2 (35... Kf7 {keeps fighting.} 36. Nb6 Rd2) 36. Ne7+ Kf7 37. Nxd5 Rxa3 38. Re1 a4 39. Nb6 Ra2 40. g3 a3 41. Nc4 Kf6 42. Kg2 {Weighted Error Value: White=0.16 (very precise) /Black=0.31} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.23"]
[White "Babula, Vlastimil"]
[Black "Llopis de Aysa, Manuel"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2561"]
[BlackElo "2035"]
[Annotator "TA"]
[PlyCount "127"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,127,34,18,31,25,37,17,20,28,37,28,15,5,31,24,35,16,11,-19,21,15,20,-3,23,27,32,50,30,25,20,0,0,-14,0,0,7,0,14,10,32,13,20,5,9,12,17,2,44,43,50,31,26,0,14,0,0,0,0,0,0,0,0,0,28,0,0,0,0,0,7,7,7,0,0,0,32,31,18,0,0,0,0,0,33,0,35,0,108,75,92,43,29,0,65,27,32,0,0,-3,0,0,0,0,0,0,0,-53,0,0,102,59,526,508]} 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. Re1 c6 8. a4 a5 {8...h6 gains popularity.} 9. b3 h6 {C41: Philidor Defence.} 10. h3 Re8 11. Bb2 Qc7 {The position is equal.} 12. Qd2 Nf8 13. Bd3 $5 {[%mdl 4] Exploring less charted territory.} Ng6 14. Ne2 {[#]} Nh7 $146 {[%cal Bf6h7,Bh7g5,Bg5e6][%mdl 32]} ({Predecessor:} 14... Nh5 15. c4 Bf6 16. Bc3 b6 17. Rad1 Ra7 18. d5 c5 19. Kh2 Nhf4 20. Nxf4 Nxf4 {0-1 (49) Yurtseven,M (2299)-Bortnyk,O (2553) Kocaeli 2015}) 15. c4 Ng5 16. Qe3 Ne6 17. Ng3 exd4 18. Nxd4 Bg5 19. Qe2 Ngf4 {[%cal Bg6f4,Bf4e6,Be6c5][%mdl 32]} 20. Qc2 Nxd4 21. Bxd4 Ne6 22. Bc3 Bf4 $1 {Prevents e5.} 23. Nf5 Be5 24. Rac1 Nc5 25. Nd4 Bd7 26. Bf1 Ne6 27. Nxe6 Bxe6 28. Bd2 Bd4 29. Bf4 Rad8 30. Rcd1 Qb6 31. Rd2 Be5 (31... Bc5 $11) 32. Be3 $14 Qc7 33. f4 Bf6 34. Red1 b6 35. Rd3 Bc8 36. R3d2 Bf5 37. Bd3 Bc8 38. Bf2 Bb7 39. Be2 Bc8 40. Bf3 Bb7 41. Rd3 c5 $1 42. R3d2 Bc6 43. Re1 Qb7 44. Qd3 Qc7 45. h4 g5 46. hxg5 hxg5 47. g3 Kg7 48. Bg2 Rh8 49. Qf3 Bb7 50. Rd3 Bc6 51. Qe2 Be7 (51... gxf4 $11 52. Qg4+ (52. gxf4 Rdg8 $11) 52... Kf8) 52. Qd2 Bf6 {[#]} 53. Rd1 ({Don't play} 53. fxg5 Be5 $11) (53. Be3 $1 $16) 53... Qb7 54. Re1 (54. Rxd6 $2 Bxe4 55. Rd5 Bxd5 56. cxd5 gxf4 57. Qxf4 Qe7 $19) 54... Rhe8 ({Black should try} 54... Qc7 $1 $11) 55. fxg5 ({Don't blunder} 55. Rxd6 $2 Rxd6 56. Qxd6 Rd8 57. Qxc6 Qxc6 $19) (55. e5 $5 dxe5 56. fxg5 $14) 55... Be5 56. Kf1 Rh8 57. Qe3 Qe7 58. Qd2 Rh5 59. g4 Rh2 60. Bg3 {The board is on fire.} Rhh8 61. Rf3 ({Better is} 61. Kg1 $11) 61... Bxg3 (61... Bd7 $1 $15) 62. Rxg3 $11 Kg6 (62... Qe5 $11 {remains equal.} 63. Rf3 Bd7) 63. Qf2 ({White should play} 63. Qf4 $16) 63... Qxg5 $2 {[%mdl 8192] [#]} (63... Bd7 $14) 64. Qf5+ {Weighted Error Value: White=0.14 (very precise) /Black=0.30} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8.24"]
[White "Moser, Axel"]
[Black "Nielsen, Andre"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "2139"]
[BlackElo "2232"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,74,19,16,24,14,3,-47,-35,-79,-77,-145,-113,-224,-91,-95,-96,-91,-75,-89,-78,-72,-23,-29,-39,-30,-3,-11,0,-73,-56,-66,-59,-66,-41,-103,-101,-166,-148,-142,-142,-145,-149,-158,-149,-327,-301,-358,-350,-339,-351,-330,-312,-489,-485,-442,-328,-393,-387,-354,-317,-300,-280]} 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 O-O 5. Bg5 d6 6. e3 c5 7. d5 {is currently scoring better than 7.Be2.} h6 8. Bh4 Bf5 {E61: King's Indian: Early deviations for White, including Smyslov System.} 9. Nd2 Qb6 {[#]} 10. e4 $146 (10. Qc1 $11) ({Predecessor:} 10. Qc1 Na6 11. a3 g5 12. Bg3 Nh5 13. Be2 Nxg3 14. hxg3 e6 15. O-O Bg6 16. Bf3 {1-0 (52) Efimenko,Z (2643)-Nataf,I (2583) Montreal 2005}) 10... Qxb2 $15 {Black is slightly better.} 11. Na4 (11. Rc1 $15 Bg4 12. f3) 11... Qd4 $17 12. f3 ({White should try} 12. exf5 Qxh4 13. Rb1) 12... Bd7 13. Rb1 {[#]} (13. Bf2 $17 {only move.} Bxa4 14. Bxd4 Bxd1 15. Bxf6 Bxf6 16. Rxd1) 13... Qe3+ (13... Nxd5 $1 $19 {[%mdl 512] Hoping for ...Bxa4.} 14. cxd5 Bxa4) 14. Be2 Qa3 {[%csl LRa2,LRa4]} 15. Nb2 Nh5 (15... Qxa2 $6 16. Nd3 g5 17. Bf2 $15) 16. Nd3 g5 ({Don't play} 16... Qxa2 $6 17. Bxe7 Bc3 18. Rxb7 $11) 17. Bf2 Ba4 (17... Na6 $17) 18. Qc1 $11 Qxc1+ ({Don't take} 18... Qxa2 19. e5 Nf4 20. Nxf4 gxf4 21. Ra1 $11) 19. Rxc1 Na6 20. g3 $1 {Inhibits Nf4.} Nf6 {[%cal Bh5f6,Bf6g4,Bg4e3][%mdl 32]} 21. O-O (21. Be3 $11 {remains equal.}) 21... b6 22. f4 Nb4 23. Nxb4 cxb4 24. Bd3 (24. Be3 $15) 24... Ng4 $17 25. Be1 (25. Nf3 $17) 25... Bd4+ 26. Kh1 Ne3 27. Rf3 g4 $36 {[%mdl 2048] White is under strong pressure. Black is much more active. White has bad knights.} 28. Rf2 Nd1 29. Re2 {Now White is beyond hope.} (29. Rg2 $17) 29... Nc3 $19 30. Nb3 Nxe2 31. Bxe2 Bxb3 32. axb3 a5 {Threatens to win with ...a4.} 33. Bxg4 (33. Bd1 {keeps fighting.}) 33... a4 34. bxa4 b3 {[%cal Bb4b3,Bb3b2][%mdl 32]} 35. Bd7 b2 36. Rb1 Ra7 37. Bc6 {[#]} Rfa8 $1 {[%mdl 512] Weighted Error Value: White=0.36/Black=0.16 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.1"]
[White "Kozak, Antoni"]
[Black "Urkedal, Frode Olav Olsen"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2356"]
[BlackElo "2553"]
[Annotator "TA"]
[PlyCount "131"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,131,9,17,8,7,7,6,10,13,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,-12,-9,-7,-11,-7,-13,-8,-15,0,0,0,0,0,0,0,-8,0,0,0,0,0,0,143,0,0,-52,-52,-66,-66,-81,-81,-81,-72,-81,-74,-74,-74,-81,-81,-81,-81,-81,-61,-61,-61,-61,-61,-61,-61,-68,0,-61,-61,-61,-61,-61,-61,-61,-61,-61,-61,-61,-61,-61,-61,-266,-237,-229,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 d5 2. e3 Nf6 3. c4 e6 4. b3 b6 5. Bb2 Bb7 6. d4 {A13: English Opening: 1...e6.} Be7 7. cxd5 Nxd5 8. Bb5+ c6 {[#]} 9. Bd3 $146 ({Predecessor:} 9. Be2 Nd7 10. O-O O-O 11. Nbd2 c5 12. Rc1 Rc8 13. a3 cxd4 14. Bxd4 Rxc1 15. Qxc1 {½-½ (28) Sipilae,V-Semmler,R (2386) ICCF email 2020}) 9... O-O 10. O-O Nd7 11. Nc3 Nxc3 12. Bxc3 c5 13. Rc1 Rc8 14. Qe2 cxd4 15. Bxd4 Bf6 {[#] And now ...Rxc1 would win.} 16. Ba6 Rxc1 17. Rxc1 Bxf3 18. Qxf3 Bxd4 19. exd4 Nf6 {[%cal Bd7f6,Bf6d5,Bd5e7,Be7f5][%mdl 32]} 20. Rc4 Nd5 21. Bb7 Ne7 22. Qf4 Nf5 23. Ba6 b5 24. Rc8 Qa5 $40 {[%cal Ra5e1][%mdl 128] [#] White needs to defend precisely.} (24... Qb6 $5 25. Qc7 Nxd4 $11) 25. Rxf8+ Kxf8 {[%cal Ra5e1]} 26. Qb8+ Ke7 {[%cal Ra5e1,Bf8e7,Be7f6,Bf6g6,Bg6h6,Bh6h7,Bh7g7][%mdl 32]} 27. Bxb5 Qxa2 (27... Nxd4 $11 28. Bf1 h6) 28. d5 (28. Qc7+ $16 Kf6 29. Qd8+ Kg6 30. g4 Qb1+ 31. Bf1) 28... Qxb3 $11 {aiming for ...Qb1+.} 29. Qxa7+ (29. d6+ $1 $11 Nxd6 30. Qxa7+ Kf6 31. Qd4+ Ke7 32. Qa7+ Kf6 33. Qd4+ Ke7 34. Qa7+) 29... Kf6 $15 30. Qa1+ Kg6 31. Ba4 Qxd5 32. Bc2 h5 33. h4 Kh6 34. Qc1+ Kh7 35. g3 g6 36. Bxf5 Qxf5 $17 {[%mdl 4096] Endgame KQ-KQ} 37. Qc3 e5 38. Kg2 Qe4+ 39. Kg1 Kg7 40. Qc7 Qf5 41. Qc3 Qe4 42. Qc7 $1 Qd5 {Prevents Qc5.} 43. Qe7 Qd1+ 44. Kg2 Qe2 45. Qd6 Qe4+ 46. Kg1 Qd4 47. Qe7 Qd5 48. Kh2 Qe6 49. Qxe6 ({White should play} 49. Qc7 $15) 49... fxe6 $15 {KP-KP} 50. Kg2 Kf6 $2 ({Black should try} 50... e4 $19 {White must now prevent ...Kf6.} 51. Kf1 Kf6) 51. Kf3 $11 {The position is equal.} Kf5 (51... g5 $5 52. Ke4 g4 $11) 52. Ke3 g5 (52... Kg4 $5 53. Ke4 Kh3 54. Kxe5 Kg2 $11) 53. hxg5 Kxg5 {K3P-KPP} 54. f3 Kg6 (54... Kf5 $5) 55. Ke4 Kf6 56. Ke3 Ke7 (56... Kf5 $5) 57. Kd3 Kd7 58. Ke4 Kd6 59. Kd3 Ke7 (59... Kd5 $5 60. Ke3 Kc6 $11) 60. Ke4 Kf6 61. Ke3 Kf5 62. g4+ $1 hxg4 63. fxg4+ Kxg4 64. Ke4 Kg5 {( -> ...Kf6)} 65. Kxe5 Kg6 66. Kxe6 {Weighted Error Value: White=0.14 (very precise) /Black=0.13 (very precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.2"]
[White "Mirzoev, Azer"]
[Black "Jurcik, Marian"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "2420"]
[BlackElo "2397"]
[Annotator "TA"]
[PlyCount "1"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 1,1,26]} 1. d4 {An uneventful encounter.} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.3"]
[White "Czerw, Dawid"]
[Black "Haring, Filip"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "2396"]
[BlackElo "2398"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,73,24,23,11,9,32,16,16,19,19,16,53,37,66,49,52,35,36,24,32,22,56,50,66,69,65,61,88,79,100,91,115,113,131,123,129,133,134,112,137,141,192,128,136,114,136,129,184,187,207,214,211,165,211,160,275,254,354,345,1047,1042,29997,29998]} 1. e4 c5 2. Nf3 e6 3. g3 Nc6 4. Bg2 Nf6 5. Qe2 Be7 6. O-O d6 7. c3 O-O {C00: French: Unusual White 2nd moves.} 8. d4 cxd4 9. cxd4 d5 {The position is equal.} 10. e5 Ne4 11. Rd1 Qb6 12. Be3 $1 Bd7 13. Ne1 $1 {[#] Hoping for Bxe4.} Nb4 {[#]} 14. Bxe4 $146 ({Predecessor:} 14. f3 Bb5 15. Nd3 Nxd3 16. fxe4 Nxe5 17. Qe1 Nc4 18. exd5 exd5 19. Nc3 Bc6 20. Bf2 {1-0 (34) Murzin,V (2519)-Aldokhin,I (2413) Chess.com INT 2021}) 14... dxe4 15. Nc3 Nd5 16. Nxe4 Nxe3 17. fxe3 Bc6 18. Nc3 a5 19. Nd3 a4 20. a3 f6 21. Rf1 Be8 22. exf6 {White is more active.} Bxf6 23. Ne4 Bb5 24. Nxf6+ gxf6 25. Rf2 Kh8 {[%cal Oe6e5]} 26. Qd2 e5 (26... Qd6 $16 27. Nb4 Bc4) 27. Nb4 ({White should try} 27. Qb4 $18) 27... Rad8 $16 {[%cal Re5d4]} 28. Rd1 {[%cal Ba1d1,Bd1e1,Be1e6,Be6f6][%mdl 32]} exd4 29. exd4 {[%cal Be3d4,Bd4d5][%mdl 32]} Be8 (29... Rd6 $16 {keeps fighting.} 30. d5 (30. Qh6 Kg8 $16) 30... Re8) 30. d5 $18 Bh5 31. Qd4 Qd6 32. Re1 Kg7 (32... Bg6 {is a better defense.} 33. Ref1 Kg7) 33. Qf4 Qd7 (33... Rfe8 $16 34. Rxe8 Bxe8 35. Qxd6 Rxd6) 34. Re6 Rde8 35. Rxf6 Re1+ $2 (35... Rxf6 36. Qxf6+ Kg8 37. Qg5+ Bg6) 36. Kg2 {[#] Qh6+ would kill now.} Rfe8 37. Qh6+ {Weighted Error Value: White=0.08 (flawless) /Black=0.43} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.4"]
[White "Torngren, Gustav"]
[Black "Pijpers, Arthur"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2228"]
[BlackElo "2485"]
[Annotator "TA"]
[PlyCount "121"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,121,-3,27,0,16,18,9,4,139,136,142,137,133,127,139,129,124,127,125,125,127,120,156,147,143,155,150,146,146,154,150,148,150,156,143,144,149,117,132,129,135,121,114,97,84,65,59,57,144,128,241,198,211,185,187,17,120,19,56,59,68,0,8,7,7,7,2,2,2,7,7,7,496,495,496,496,496,496,496,496,496,496,489,489,467,449,4133,4133,4133,4133,4133,4133,4126,8,8,8,8,8,8,8,8,8,8,8,8,8,8,-29985]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Be7 6. Nxf6+ Bxf6 7. Bxf6 Qxf6 8. Nf3 {[%cal Bg1f3,Bf3d4,Bd4b5][%mdl 32]} c5 9. Qd3 {[#] 9.Bb5+ is the modern continuation. C13: French: Classical System: 4 Bg5 Be7, Alekhine-Chatard Attack.} cxd4 $146 ({Predecessor:} 9... Nc6 10. O-O-O cxd4 11. Qe4 Bd7 12. Nxd4 Nxd4 13. Rxd4 Bc6 14. Qe3 O-O 15. f3 {½-½ (15) Kuipers,S (2435)-Das,A (2439) Leiden 2019}) 10. Qxd4 Qxd4 11. Nxd4 b6 (11... Bd7 $11) 12. Nb5 $1 $16 Kd8 {Prevents Nc7.} 13. Be2 {[%cal Bf1e2,Be2f3,Bf3c6,Bc6b5][%mdl 32]} Nd7 14. Bf3 {Inhibits Bb7.} Rb8 15. Nxa7 {White is more active.} Bb7 16. Nc6+ Bxc6 17. Bxc6 {0-0-0 is the strong threat.} Kc7 18. Bb5 g5 19. O-O-O Ne5 20. Rhe1 f6 21. Re3 {Strongly threatening Rc3+.} Rbd8 22. Rc3+ Kb7 23. Rxd8 Rxd8 {[%mdl 4096] Endgame KRB-KRN} 24. Rh3 Rh8 25. Be2 h6 26. c3 Kc7 27. Kc2 f5 28. Re3 Kd6 29. f3 h5 30. a4 h4 31. h3 Ra8 ({Better is} 31... Ng6 $14) 32. Bb5 Ng6 (32... Ra7 $16 {was called for.} 33. b4 Re7) 33. Re2 Nf4 34. Rd2+ Ke7 35. Kb3 $2 (35. Rd7+ $18 Kf6 36. Bc6) 35... Ra7 (35... Rd8 $1 $11 {remains equal.} 36. Rf2 (36. Rxd8 Kxd8 37. Bf1 Nd5 $11) 36... Rd1) 36. Bc4 (36. c4 $16) 36... e5 37. Kb4 Rd7 $1 38. Rc2 (38. Rxd7+ $14 Kxd7 39. Bf1) 38... e4 39. fxe4 fxe4 40. Kb5 Rd6 41. b4 {[%cal Bb2b4,Bb4a5,Ba5a6][%mdl 32] Threatening a5.} e3 42. a5 bxa5 43. bxa5 {Hoping for a6.} Rd2 $2 {[%mdl 8192]} (43... Kd8 $11 {and Black has nothing to worry.}) 44. Rxd2 $18 exd2 {KB-KN} 45. Bb3 Kd7 {[#]} 46. Kb6 $1 {Threatens to win with a6.} (46. a6 Kc7 47. c4 Ne2 $14) 46... Nd5+ {[#]} 47. Kb7 $1 {Black must now prevent a6.} Nxc3 48. a6 Nb5 49. Kb6 (49. Ba4 Ke6 $16) 49... Nd6 50. Ba4+ ({Weaker is} 50. a7 Nc8+ 51. Ka6 Nxa7 52. Kxa7 Kd6 $11) 50... Kd8 (50... Ke6 $142 51. Kc5 (51. a7 Nc8+ 52. Ka6 Nxa7 $11) 51... Nc8) 51. a7 Nc8+ 52. Ka6 Nxa7 53. Kxa7 {KB-K3P} Kc7 54. Bd1 $2 ({White must play} 54. Ka6 $18 {White threatens Kb5 and mate.} Kd6 55. Ka5) 54... Kd6 $1 $11 {The position is equal.} 55. Kb6 Ke5 $1 56. Kc5 Kf4 57. Kd4 Kg3 58. Bf3 {Intending Ke4 and mate.} g4 $1 59. Bxg4 {Ke3 would kill now.} (59. hxg4 h3 60. Kc3 hxg2 61. Bxg2 d1=Q 62. Be4 Qxg4 63. Bd5 Kf4 64. Kd4 Qd1+ 65. Kc4 Ke5 66. Bb7 Qc2+ 67. Kb5 Qc3) 59... Kxg2 60. Ke3 d1=Q 61. Ke4 $2 {[%mdl 40960] Inhibits Qd5+. A wild game.  Weighted Error Value: White=0.24 (precise) /Black=0.32. An unexpected result.} (61. Bxd1 $11 Kxh3 62. Bh5) 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.5"]
[White "Plischki, Sebastian"]
[Black "Mikes, Jan"]
[Result "1-0"]
[ECO "E81"]
[WhiteElo "2375"]
[BlackElo "2329"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,81,30,25,34,25,29,36,68,18,108,101,116,128,120,124,108,103,131,138,185,126,119,119,151,150,122,114,97,100,132,139,134,132,187,177,184,173,225,231,234,222,224,170,221,202,373,365,368,329,347,352,507,493,701,717,904,888,714,232,470,458,653,638,1797,2358,29982,29983,29983,29984]} 1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. f3 O-O 6. Nge2 c5 7. d5 e6 8. Ng3 h5 {E81: King's Indian: Sämisch: 6th move deviations (including 6 Be3 c6).} 9. Bg5 {[%cal Oe4e5]} Qb6 {[%cal Of6d5]} 10. Qd2 Nh7 {White is slightly better.} 11. Bh4 {[#]} (11. Be3 $14) 11... g5 $146 (11... exd5 $1 $11 {remains equal.} 12. Nxd5 (12. cxd5 f6 $11) 12... Qxb2 13. Qxb2 Bxb2) ({Predecessor:} 11... Nd7 12. Be2 g5 13. Bxg5 Nxg5 14. Qxg5 Qxb2 15. Rc1 f6 16. Qe3 f5 17. dxe6 f4 {0-1 (80) Papasimakopoulos,A (2251)-Ghazarian,K (2220) Chess.com INT 2021}) 12. Bxg5 $16 (12. Na4 Qd8 13. Nxh5 gxh4 $19) 12... Nxg5 13. Qxg5 Qxb2 14. Rc1 f6 15. Qe3 f5 16. Nxh5 {Hoping for Qg5.} Bd4 (16... f4 $16 17. Qd2 Qxd2+ 18. Kxd2 Bd4) 17. Qd2 (17. Qg5+ $18 Kh7 18. Ne2) 17... Qxd2+ 18. Kxd2 fxe4 19. Nxe4 exd5 20. cxd5 Bf5 21. Nhg3 {Pair of Knights!} Bg6 22. Bd3 (22. Nxd6 Be5 $14) 22... Be5 23. Rb1 {White is more active.} Bf4+ {[#]} (23... Na6 $16) 24. Ke2 $1 $18 c4 25. Bxc4 Nd7 (25... b6 $142 26. Kf2 Nd7) 26. Rxb7 Ne5 27. Bb3 (27. Nxd6 $6 Rad8 $14) 27... a5 28. a4 Rac8 (28... Rab8 $142 29. Rxb8 (29. Nxd6 Nxf3 30. gxf3 Bxd6 $16) 29... Rxb8) 29. Rd1 Nc4 (29... Bxg3 {was necessary.} 30. Nxg3 (30. hxg3 Bxe4 31. fxe4 Rc3 $16) 30... Rb8 31. Rxb8 Rxb8) 30. Rd4 Ne3 {[#]} 31. Nxd6 $1 Bxd6 32. Kxe3 {Black must now prevent Rg4. Chess con chili.} Bc5 (32... Rb8 $142) 33. Ne4 Bxe4 (33... Rfe8 $142 34. Rb5 Kg7) 34. fxe4 Rb8 35. d6+ Kh8 36. Bd5 $2 (36. Rxb8 Rxb8 37. Bc4) 36... Rxb7 $2 (36... Bxd6 {was called for.} 37. Rd1 Rxb7 38. Bxb7 Bc5+ 39. Kd3 Kg7) 37. Bxb7 Rb8 {[#]} (37... Rf1 $142) 38. d7 $1 {Threatens to win with Bc8.} Kg7 (38... Rd8 39. Bc6) 39. Bc8 Bxd4+ 40. Kxd4 Rb1 41. Ke5 {Weighted Error Value: White=0.22 (precise) /Black=0.71} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.6"]
[White "Carlsson, Ludvig"]
[Black "Koubova, Anna Marie"]
[Result "1-0"]
[ECO "D25"]
[WhiteElo "2355"]
[BlackElo "2148"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,105,41,51,45,48,52,27,84,31,49,16,93,102,178,50,73,33,40,29,55,-7,0,-25,-29,-32,-30,-539,-93,-106,-97,-116,-103,-116,-106,-103,-36,-33,-35,-41,-36,-41,121,109,116,112,140,140,140,140,153,145,145,8,174,181,595,345,626,495,469,463,450,439,926,901,1253,1141,1356,1356,1317,1210,1356,1326,1105,811,582,556,537,515,515,515,515,414,96,103,4618,4577]} 1. Nf3 d5 2. d4 Nf6 3. c4 dxc4 4. e3 Bg4 5. Bxc4 e6 6. Nc3 a6 7. h3 Bh5 8. g4 Bg6 9. Ne5 Nbd7 10. Nxg6 hxg6 11. Bf1 Be7 {D22: Queen's Gambit Accepted: 3 Nf3 a6 4 e3.} 12. Bg2 c6 13. O-O {[#]} O-O $146 (13... Qc7 $11) ({Predecessor:} 13... Nd5 14. e4 Nxc3 15. bxc3 Qc7 16. e5 O-O 17. f4 b5 18. f5 gxf5 19. gxf5 exf5 20. Rxf5 Nb6 21. Qg4 Nd5 22. Bh6 g6 23. Rf3 Kh7 24. Bxf8 Rxf8 25. Raf1 Kg7 26. h4 {1-0 (26) Basso,P (2563)-Lazic,M (2409) Venice 2019}) 14. f4 (14. g5 $16) 14... Rc8 $14 15. h4 Nd5 (15... b5 $11) 16. g5 $16 Qc7 (16... Qe8 $16 {was called for.}) 17. Be4 (17. h5 $18) 17... f5 {aiming for ...Nxc3.} 18. gxf6 N7xf6 {And now ...Nxc3 would win.} 19. Bxg6 c5 20. Ne2 (20. Nxd5 $14 exd5 21. Rf2) 20... Ng4 21. Ng3 Nh6 {Pair of Knights!} (21... Ndxe3 $2 22. Bxe3 Nf6 23. Rc1 $18) 22. Ne4 cxd4 23. Ng5 $2 {[%mdl 8192]} (23. Qxd4 $11 {and White has nothing to worry.} Rcd8 24. Qe5) 23... Nxe3 $2 (23... dxe3 $19 {is more deadly.} 24. Nxe6 Qb6 25. Qxd5 e2+ 26. Nd4+ Kh8) 24. Bxe3 $17 dxe3 25. Nxe6 Qb6 26. Qb3 Qxb3 27. axb3 e2 (27... Rf6 $1 $17 {[%cal Rf6g6]} 28. f5 Rc6) 28. Rfe1 $15 (28. Rfc1 $2 Rxc1+ 29. Rxc1 Rf6 $19) 28... Rf6 29. Be4 {[%cal Oe1e2]} Kh8 $1 (29... Rxe6 $2 30. Bd5 Nf7 31. Bxe6 $18) 30. Bxb7 Rg6+ $2 (30... Re8 $1 $15 {stays ahead.} 31. Nc7 (31. Rxe2 $2 Rxe6 32. Rxe6 Bc5+ 33. Kg2 Rxe6 $19) 31... Rb8 32. Bxa6 Rxf4 33. Bxe2 (33. Rxe2 Rg4+ 34. Kh1 Nf5 $17) 33... Bc5+ 34. Kh1 Rxh4+ 35. Kg2 Rxb3) 31. Ng5 $16 Bc5+ 32. Kg2 $1 Rb8 33. Bxa6 Rf6 34. Rxe2 ({Much less strong is} 34. Bxe2 Rxf4 35. Bf3 Rxh4 $14) 34... Rxf4 35. Ra4 Rf6 36. Rc4 Bf8 $2 (36... Rxa6 $11 {and Black stays safe.} 37. Rxc5 Rab6) 37. Rc8 $18 Rxb3 (37... Rxc8 {is more resistant.} 38. Bxc8 Bc5) 38. Ne6 Rb6 $2 (38... Nf5 39. Rxf8+ Rxf8) 39. Nxf8 {Black must now prevent Nd7+.} Rxa6 40. Nd7+ Kh7 41. Nxf6+ gxf6 {[%mdl 4096] Endgame KRR-KRN} (41... Rxf6 $142 42. Re4 Rg6+ 43. Kh3 Nf5) 42. Rc5 Ng4 43. Kg3 Ne5 44. Rcxe5 fxe5 45. Rxe5 {KR-KR} Rb6 46. Re2 Kg6 47. Kf3 Kf5 48. h5 {Ke3 is the strong threat.} Rb3+ 49. Kf2 Rh3 {[#]} 50. Ke1 $1 {Threatens to win with Kd2.} Rxh5 51. Kd2 Rh8 52. b4 Rc8 $2 {[%mdl 8192] [#]} (52... Rh3 $16) 53. Kd3 $1 {Quite a comeback for White.  Weighted Error Value: White=0.61/Black=0.78} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.7"]
[White "Vojta, Jakub"]
[Black "Mannion, Stephen R"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2289"]
[BlackElo "2267"]
[Annotator "TA"]
[PlyCount "175"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,175,24,11,23,23,33,26,44,29,50,0,44,16,42,41,41,35,40,10,33,12,26,17,23,0,0,0,0,0,0,0,13,18,8,-58,6,6,6,6,6,6,6,6,6,6,6,0,6,0,6,6,6,6,6,0,9,0,30,22,33,0,0,0,18,27,31,0,77,30,30,30,35,35,35,14,31,0,43,43,43,43,44,44,111,22,181,22,22,0,15,15,22,22,22,0,0,0,22,22,22,22,22,22,28,22,12836,22,22,22,22,22,12833,12833,12840,22,22,22,12833,12834,12835,12835,12837,12835,12837,12835,12835,12835,12836,12835,12835,12835,12837,12837,12837,12834,12833,12831,12841,12831,12831,12831,12840,12840,12843,12843,12844,12842,12843,12843,12845,12845,12845,12845,12845,12846,12846,12847,12847,12848,27999,27997]} 1. Nf3 {Chekhov,V} d5 2. g3 Nf6 3. Bg2 c6 4. c4 g6 5. b3 Bg7 6. Bb2 O-O 7. O-O Bg4 8. d3 Bxf3 9. Bxf3 Re8 {A11: English Opening: 1...c6.} 10. Nd2 a5 11. a3 Na6 {[#] White has an edge.} 12. Qc2 $146 ({Predecessor:} 12. Bg2 Qd6 13. Qc2 Rec8 14. Rac1 Qd8 15. Rfd1 Nc5 16. d4 Ncd7 17. Qd3 e6 18. Rc2 {1-0 (74) Larsen,B (2590)-Panno,O (2540) Buenos Aires 1980 MCL [Chekhov,V]}) 12... Rc8 13. Rfc1 (13. d4 $14) 13... e6 (13... d4 $11 {should be considered.}) 14. Be5 Nd7 15. Bxg7 Kxg7 16. Qc3+ Nf6 17. b4 axb4 18. axb4 Qe7 19. Rab1 e5 20. b5 Nc5 21. bxc6 bxc6 22. d4 Nce4 23. Bxe4 Nxe4 24. Nxe4 dxe4 25. Rb6 ({White should try} 25. Rd1 $11) 25... exd4 (25... Qd8 $15 26. Qb2 Qxd4) 26. Qxd4+ $11 Qe5 27. Rd1 Qxd4 28. Rxd4 {[%mdl 4096] Endgame KRR-KRR} Re5 29. Rb7 Rce8 30. Rdd7 Rf8 31. Rd4 Rfe8 32. Rdd7 Rf8 33. Kf1 Rc5 34. Rd4 Re8 35. Ke1 e3 36. f4 Ra8 {[%cal Oc5c4]} 37. Kf1 Ra2 38. Rdd7 Rf5 39. Rb3 Rc2 40. Rxe3 Rxc4 41. Ree7 Rc2 (41... g5 $11 {remains equal.}) 42. Kg2 ({White should play} 42. e4 $16 Rb5 43. Rxf7+ Kg8 44. Rg7+ Kf8 45. Rdf7+ Ke8 46. Rb7 (46. Re7+ Kd8 $14) 46... Rxb7 47. Rxb7) 42... h5 43. Kf3 {Threatens to win with e4.} Kg8 44. h3 {Black must now prevent g4.} g5 45. Ke4 Rfc5 46. Kf3 Rf5 47. e3 {aiming for g4.} gxf4 48. gxf4 Rc3 49. Ke4 Rf6 (49... Rcc5 $14) 50. Rc7 (50. f5 $1 $16) 50... Kf8 {[#] To avoid Re8+} (50... h4 $11 {and Black stays safe.}) 51. Re5 $2 (51. f5 $1 $18) 51... h4 52. Rc8+ Kg7 53. Ree8 {Intending Rg8+ and mate.} Re6+ 54. Rxe6 fxe6 {KR-KR} 55. Re8 Kf6 56. Rh8 c5 (56... e5 $5) 57. Rxh4 c4 58. Rh5 Ra3 59. Rc5 Rc3 60. h4 {Hoping for Rc6.} Kg6 $2 {[%mdl 8192]} (60... Rc1 $11) 61. Re5 $2 (61. h5+ $18 Kh6 62. Re5) 61... Kf6 62. h5 {Strongly threatening h6.} Rc1 63. Kd4 c3 $2 {[%mdl 8192]} (63... Rc2 $11) 64. Kd3 $18 ({Less strong is} 64. Rc5 Rc2 65. Kd3 (65. Rxc3 Rd2+ 66. Ke4 Rd5 $14) 65... Rc1 $18) 64... Kf7 {[#]} 65. Rc5 $2 ({White must play} 65. f5 $1 $18 exf5 66. Rxf5+ Ke6 67. Ra5 (67. Rc5 Kd6 $16)) 65... Kf6 $1 $11 66. Rg5 {Re5 is the strong threat.} c2 $2 {[%mdl 8192] White leaves nothing to chance now.} (66... Re1 $11) 67. Rc5 $18 Rd1+ 68. Kxc2 Rd8 69. Re5 Rd7 70. Kc3 Rd1 71. Rg5 Kf7 72. Ra5 Kf6 73. Kc2 Rd8 74. Rb5 Rd7 75. Kc3 Rd1 76. Re5 Kf7 77. Kc4 Kf6 78. Kc5 Rd3 79. h6 {[%cal Bh5h6,Bh6h7][%mdl 32]} Rd8 80. h7 Rh8 81. Rh5 Kg6 82. Rh1 Kf7 83. Kd6 Rd8+ 84. Kc7 Rh8 85. Kd7 Kf6 86. e4 e5 87. fxe5+ Kxe5 88. Ke7 {Weighted Error Value: White=0.21 (precise) /Black=0.18 (very precise)} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.8"]
[White "Unneland, Mathias"]
[Black "Blahynka, Martin"]
[Result "0-1"]
[ECO "E10"]
[WhiteElo "2262"]
[BlackElo "2399"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,62,29,27,25,32,53,35,45,31,43,24,58,54,66,61,60,61,51,41,56,31,40,0,55,34,44,29,22,-47,-43,-84,-7,-58,-83,-88,-32,-93,0,-213,104,103,98,100,92,108,87,-968,-943,-1115,-953,-953,-953,-938,-746]} 1. Nf3 Nf6 2. c4 e6 3. d4 c5 4. d5 b5 5. dxe6 fxe6 6. cxb5 {[%cal Oe2e4]} a6 {E10: Blumenfeld Gambit.} 7. e3 Be7 8. Nc3 O-O {White is slightly better.} 9. Be2 axb5 10. Nxb5 {[#]} Nc6 $146 ({Predecessor:} 10... d5 11. O-O Nc6 12. b3 Bd7 13. Bb2 Qb8 14. h3 Kh8 15. Nd2 Ne5 16. a4 Ng6 {0-1 (42) Beinoras,M (2386)-Le Goff,D (2281) Panevezys 2010}) 11. O-O Kh8 12. b3 d6 13. Bb2 e5 14. Nd2 d5 {To avoid Nc4} 15. Nf3 d4 $1 16. exd4 (16. a4 {looks sharper.} Rb8 17. exd4 exd4 18. Bd3 Nb4 19. Ne5) 16... cxd4 (16... exd4 $11 17. Re1 Nd5) 17. Rc1 (17. a4 $5 {[%cal Ra1c1]}) 17... Rxa2 {And now ...Bd7 would win.} 18. Rxc6 Rxb2 19. Rc2 ({White should try} 19. Nxe5 $11 Qd5 20. Rxc8 Rxc8 21. Nc4 Rxe2 22. Qxe2) 19... Rxc2 $15 20. Qxc2 {[#]} Bd6 (20... Nd5 $1 $17 {[%cal Rd5f4] aiming for ...Nf4.} 21. Nxe5 Nf4) 21. Qc6 (21. Nxd6 $11 Qxd6 22. Bd3) 21... Bb8 22. Bc4 Bd7 (22... Bf5 $17 {...Be4 is the strong threat.} 23. Ng5 Qe7) 23. Qb7 ({White should play} 23. Qc5 $1 $15) 23... e4 (23... Qe7 $17 {Strongly threatening ...Qc5.} 24. Ra1 Qc5) 24. Ng5 $2 (24. Nfxd4 $11 Ng4 25. h3 Bh2+ 26. Kh1) 24... Bxh2+ $2 25. Kxh2 $16 Ng4+ 26. Kg1 {[%cal Ob5d6] Threatens to win with Nd6!} Qxg5 27. Qxd7 {Hoping for Qd6.} e3 {[%cal Be4e3,Be3e2][%mdl 32]} 28. f3 $2 {[%mdl 8192] [#] Loses the game.} ({Not} 28. Nxd4 $2 Qh4 29. Qxg4 Qxg4 $19) (28. fxe3 {gets mated.} Qxe3+) (28. Qd6 $16 Ra8 29. Qg3 (29. Nxd4 exf2+ 30. Rxf2 Nxf2 $14) (29. Qxd4 Qh5 $14) 29... exf2+ 30. Rxf2) 28... e2 $1 $19 {Black is clearly winning.} 29. Qxg4 (29. Qd6 Rd8) 29... Qxg4 {[%mdl 64] Pin} 30. Re1 Rxf3 {( -> ...Qg5)} 31. Rxe2 Re3 {Weighted Error Value: White=0.54/Black=0.38} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.9"]
[White "Fus, Jakub"]
[Black "Dev, Shah"]
[Result "1-0"]
[ECO "D23"]
[WhiteElo "2384"]
[BlackElo "2243"]
[Annotator "TA"]
[PlyCount "133"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,133,0,25,27,27,19,33,31,100,65,94,80,82,89,85,56,137,118,127,118,115,116,136,122,138,110,118,120,152,156,171,110,149,149,222,237,225,147,141,156,146,52,62,37,23,0,79,22,101,-50,-47,-182,-174,-531,-519,-678,-685,-631,-604,-553,-554,-520,-412,-375,-371,-703,231,231,231,231,231,229,363,370,720,665,696,696,671,666,1484,1478,1391,1437,12828,12826,12830,1550,12837,12837,12837,12838,12841,12840,12845,12842,12845,12840,12840,12840,12845,12841,12842,12833,12845,12840,12841,12841,12841,12842,12842,12843,12843,12839,12844,12844,12845,12843,12846,12846,12847,12847,12848,12848,12849,12849]} 1. Nf3 Nf6 2. d4 d5 3. c4 dxc4 4. Qa4+ Nc6 5. Nc3 e6 6. a3 {D23: Queen's Gambit Accepted: 3 Nf3 Nf6 sidelines.} Bd7 {[%cal Oc6d4] White must now prevent ...Nxd4!} 7. Qxc4 Na5 8. Qa2 {[#] White is slightly better.} b5 $146 ({Black should try} 8... Bc6 $14) ({Predecessor:} 8... Bc6 9. e3 Bd5 10. Bb5+ c6 11. Nxd5 Qxd5 12. Ba4 Bd6 13. Bc2 O-O 14. b3 b6 {1-0 (50) Dreev,A (2633)-Kulaots,K (2525) Gausdal 2007}) 9. e3 {[%cal Be2e3,Be3e4][%mdl 32]} c6 10. Bd2 Nb7 11. Bd3 a6 12. a4 Bb4 (12... b4 $1 $14) 13. O-O O-O 14. e4 {White is more active.} Be7 15. Qb1 h6 16. b4 {Inhibits c5.} Ne8 17. a5 Nc7 18. Ne2 f5 19. Ne5 Bd6 20. f3 (20. Nf4 $18) 20... Bxe5 21. dxe5 fxe4 (21... Rc8 $16 22. Rc1 fxe4) 22. Bxe4 $18 Nd5 23. Rc1 Rc8 24. Qb3 Qe7 25. Bb1 (25. f4 $16) 25... c5 $1 $14 26. Qd3 {White wants to mate with Qh7+.} g5 $1 27. h4 {hxg5 is the strong threat.} cxb4 (27... Qg7 $1 $11) 28. hxg5 ({White should play} 28. Ba2 $16) 28... hxg5 {[#]} (28... Rxc1+ $11 29. Bxc1 Be8) 29. Rxc8 $2 ({Don't play} 29. Qg6+ Qg7 $11) ({White must play} 29. Ba2 $1 $16) 29... Rxc8 $15 30. Ng3 (30. Ba2 $1 $15 Nc5 31. Qg6+ Qg7 32. Qxg7+ Kxg7 33. Bxd5 exd5 34. Bxb4) 30... Nc5 $36 {[%cal Bb7c5,Bc5b3,Bb3a1,Ba1c2][%mdl 2080] Black has strong initiative.} 31. Qd4 (31. Qg6+ {is more resistant.} Qg7 32. Bxg5) 31... Nb3 $1 {[%csl LRa1,LRd4] Pair of Knights!} 32. Qd3 Nxa1 33. Ne4 Qh7 34. Qd4 {Strongly threatening Nf6+.} Nc2 35. Qb2 b3 36. Qxb3 Nd4 37. Nf6+ $2 (37. Qd3 Nf5 38. Ba2) 37... Nxf6 $4 {[%mdl 8192]} (37... Kf7 $19 {and all is fine.} 38. Qxb5 {[#]} Ne2+ $1 {[%mdl 512]} 39. Qxe2 Qxb1+ 40. Qf1 Qxf1+ 41. Kxf1 Nxf6 42. exf6 Kxf6) 38. Bxh7+ $18 Nxh7 39. Qd3 Rc4 40. Be3 Nf5 (40... Bc6 $142) 41. Qxd7 Nxe3 $2 (41... Nf8 42. Qd8 g4 43. fxg4 Nxe3) 42. Qxe6+ {White is clearly winning.} Kg7 43. Qxa6 {Threatens to win with Qa7+.} Rc1+ 44. Kf2 Nc4 45. Qb7+ Kh6 46. a6 Nxe5 47. a7 Rc2+ 48. Kg1 Ra2 49. a8=Q Rxa8 50. Qxa8 Nf6 51. Qb8 {[%csl LRb5,LRe5]} Nf7 52. Qxb5 Kg6 53. Qb1+ Kg7 54. Qf5 Nh7 55. Kf2 Nf6 56. Ke3 Nh7 57. Kd4 Nf6 58. Kc5 Nh5 59. Kc6 Nf4 60. Kd7 Ng6 61. Qb1 Kf6 62. Qb6+ Kg7 63. Qb2+ Kh6 64. Ke6 Nfh8 65. g3 Nf8+ 66. Ke7 Nfg6+ 67. Kf6 {Both players deserved the win here.  Weighted Error Value: White=0.53/Black=0.44} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.10"]
[White "Pham, Khoi"]
[Black "Van Osch, Mees"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2114"]
[BlackElo "2364"]
[Annotator "TA"]
[PlyCount "140"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,140,22,33,18,11,25,16,18,0,0,0,9,15,20,-14,0,0,51,34,53,50,60,80,100,82,130,0,0,0,0,0,0,-27,-20,-15,116,114,110,99,103,93,95,99,80,76,122,132,128,122,131,102,188,113,112,0,0,0,0,0,0,0,0,0,0,-27,-27,-31,0,-157,-158,-158,-158,-158,-158,-158,-158,-158,-158,-158,-158,-158,-158,-158,0,-390,-56,-429,-429,-429,-158,-158,0,-158,-158,-422,-422,-352,-273,-187,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 cxd4 8. Nxd4 Bc5 9. Qd2 O-O 10. O-O-O a6 11. Nb3 Be7 {C11: French: Classical System: 4 e5 and 4 Bg5 dxe4.} 12. Bd3 {[%cal Oh2h4]} Nb4 13. Kb1 b5 {[#]} 14. g4 $146 {[%cal Oh2h4]} ({Predecessor:} 14. Be2 Qc7 15. Rhf1 Nc6 16. Bd3 Nb6 17. Bxb6 Qxb6 18. g4 {1-0 (28) Nenneman,D (2295)-Graham,O (2281) ICCF email 2019}) 14... Nxd3 15. cxd3 {[%cal Oh2h4]} Bb7 {[%cal Od5d4]} 16. Nd4 {[%cal Oh2h4]} b4 17. Nce2 a5 18. Rc1 Ra6 (18... a4 $11) 19. g5 $14 a4 {[%cal Ob4b3]} 20. h4 $1 {[%cal Bh2h4,Bh4h5][%mdl 32]} Qa5 21. h5 Nc5 {[%cal Oc5b3]} 22. Qd1 {To avoid Nb3. aiming for f5.} (22. h6 g6 23. Ng3 Nb3 $1 24. axb3 axb3 25. Nxb3 Qa2+ 26. Kc2 Ra3 $17) 22... Bc8 (22... Qd8 $142) 23. Ng3 (23. g6 $1 $16) 23... Nb3 $1 $11 24. Nc6 (24. axb3 $2 axb3 25. Nxb3 Qa2+ 26. Kc2 Ra3 $19) 24... Rxc6 25. Rxc6 {Threatens to win with h6. Really sharp!} d4 26. Bf2 {[#]} ({But not} 26. axb3 Bd7 27. Rd6 Bxd6 28. Bxd4 Bc7 $17) 26... Bb7 27. Rc4 {[#]} Bxh1 (27... Bf3 $1 $11 28. Qe1 (28. Qc2 Bxh1) 28... Qa6) 28. Nxh1 $16 Nc5 29. Bxd4 Nd7 30. Nf2 (30. h6 {keeps more tension.} Nb6 31. hxg7 Kxg7 32. Rc1 a3 33. b3) 30... Nb6 31. Bxb6 Qxb6 32. d4 (32. Ng4 {seems wilder.} b3 33. Rxa4 bxa2+ 34. Kxa2 Qb7 35. Nf2) 32... a3 ({Better is} 32... Qa6 33. Rc7 Bd8) 33. b3 $1 Qb7 {Inhibits Qf3.} 34. Qh1 {To avoid Qg2} Qxh1+ 35. Nxh1 {[%mdl 4096] Endgame KRB-KRN} f6 (35... h6 $16 {was necessary.}) 36. gxf6 ({White should play} 36. g6 $1 $18) 36... gxf6 37. Nf2 (37. Ng3 $1 $16) 37... fxe5 $11 38. dxe5 Rf5 39. Kc2 Rxh5 40. Kd3 Rh2 41. Rc2 Kf7 42. Re2 h5 {[%cal Bh7h5,Bh5h4,Bh4h3,Bh3h2][%mdl 32]} 43. Ne4 Rh1 44. Nf2 $2 (44. Nd6+ $11 Bxd6 45. exd6) 44... Rb1 $1 $17 45. Ke4 Rb2 46. Kf3 h4 {Hoping for ...Kg6.} 47. Nd3 Rxe2 48. Kxe2 {KB-KN} h3 49. Kf3 Kg6 $1 ({Don't play} 49... Bh4 50. Nxb4 Kg6 51. Nd3 $16) 50. Nf2 ({Wrong is} 50. Kg3 $2 Kf5 51. Kxh3 Ke4 $19) 50... h2 {White must now prevent ...Bh4.} 51. Kg2 Bc5 $2 ({Black should try} 51... Kf5 $17 52. Nh3 Kg4 53. Kxh2 Kf3) 52. Ne4 $2 {[%mdl 8192]} (52. Nd3 $11 Be7 53. Kxh2) 52... Bg1 $2 (52... Be3 $19 {And now ...Kf5 would win.} 53. Kxh2 Kf5 54. Nd6+ Kxf4) 53. Ng3 {[%mdl 8192]} (53. Nd6 $1 $15) 53... Be3 $19 54. Kf3 Bd2 (54... Bc1 $1 $19 {[%cal Rc1d2] and Black stays clearly on top.} 55. Nh1 Bd2) 55. Kg4 $17 Be3 {...Bf2 is the strong threat.} 56. Kf3 {To avoid Bf2} Bc1 57. Kg4 $2 (57. Nh1 $17) 57... Bd2 $19 58. Nh1 {[#]} Be1 59. Kf3 {[#]} Kf5 $2 (59... Kh5 $1 $19 {Strongly threatening ...Bh4.} 60. Ke2 Bc3) 60. Ke2 $1 $11 {The position is equal.} Kxf4 61. Kxe1 Kxe5 {KN-KP} 62. Ke2 Kd4 {( -> ...Kc3)} 63. Kd2 $1 e5 {[%cal Be6e5,Be5e4,Be4e3][%mdl 32]} 64. Ng3 e4 65. Nh1 $1 e3+ 66. Ke2 Ke4 67. Ng3+ Kf4 (67... Kd4 $5) 68. Nh1 Ke4 69. Ng3+ Kd4 (69... Kf4 $5 70. Nh1 Ke4 $11) 70. Nh1 $1 Ke4 {Black had all chances to win.  Weighted Error Value: White=0.43/Black=0.38} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.11"]
[White "Hrabusa, Matej"]
[Black "Michalczak, Thomas"]
[Result "1-0"]
[ECO "C58"]
[WhiteElo "2369"]
[BlackElo "2218"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,73,31,29,41,34,25,25,26,22,32,28,54,48,39,0,0,0,0,-5,-2,-2,200,128,304,289,379,391,379,294,288,277,267,273,287,247,246,205,260,268,282,231,213,218,213,222,214,195,212,166,176,160,172,156,188,178,187,150,1765,1764,29998,29999]} 1. e4 {Stohl,I} e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Bd3 Nd5 {C58: Two Knights: 4 Ng5 d5 5 exd5 Na5 sidelines.} 9. Nf3 ({Weaker is} 9. Qh5 g6 10. Nxf7 gxh5 $17) 9... Bd6 10. O-O O-O {White has an edge.} 11. Re1 $1 f5 {[#] White must now prevent ...e4. is now debated instead of 11...Re8.} 12. Nxe5 ({Reject} 12. Rxe5 Bxe5 13. Nxe5 Qf6 $11) 12... Qf6 $1 ({Not} 12... Qh4 13. Bf1 $18) 13. Nf3 {Strongly threatening Bf1.} g5 $1 14. c4 (14. g3 $14) 14... Nf4 $11 15. Bf1 {d4 is the strong threat.} g4 16. d4 gxf3 17. Qxf3 {[#]} Qxd4 $146 {White stays focused until the end.} (17... Ne6 $1 $11 {and Black is okay.}) ({Predecessor:} 17... Ne6 18. Qc3 Nb7 19. c5 Bc7 20. b4 a5 21. b5 Qxd4 22. Qxd4 Nxd4 23. Bc4+ Be6 24. Bxe6+ Nxe6 25. Rxe6 Nxc5 {0-1 (55) So,W (2770)-Carlsen,M (2862) chess24.com INT 2021 CBM 202 Extra [Stohl,I]}) 18. Rd1 Qe5 (18... Nh3+ $16 19. gxh3 Qg7+ 20. Qg2 Qxg2+ 21. Bxg2 Be5) 19. Qg3+ $18 Ng6 {Threatens to win with ...f4.} 20. Rxd6 f4 21. Rxg6+ hxg6 22. Qxg6+ Qg7 23. Qxg7+ Kxg7 24. b4 Nb7 25. Bb2+ Kg6 26. Nd2 a5 27. Nf3 axb4 28. Ne5+ Kg5 29. Nxc6 Be6 30. Nxb4 Rfc8 31. Bc1 {And now g3 would win.} Bxc4 32. g3 {aiming for Bg2.} Bxf1 33. Bxf4+ Kg4 {Hoping for ...Be2.} 34. Rxf1 Ra4 35. f3+ Kh3 $2 (35... Kf5 $16) 36. Nd3 {[%cal Rd3f2]} Rxa2 {[#]} 37. Bd2 $1 {[%mdl 512] Weighted Error Value: White=0.15 (very precise) /Black=0.50} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.12"]
[White "Matras, Ondrej"]
[Black "Sorm, Daniel"]
[Result "1-0"]
[ECO "A53"]
[WhiteElo "2223"]
[BlackElo "2348"]
[Annotator "ChessBase"]
[PlyCount "140"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:03:04]} Nf6 {[%emt 0:03:04]} 2. c4 {[%emt 0:00:20]} d6 {[%emt 0:00:40]} 3. Nc3 {[%emt 0:00:28]} Nbd7 {[%emt 0:00:07]} 4. e4 {[%emt 0:00:13]} e5 {[%emt 0:00:07]} 5. d5 {[%emt 0:00:42]} Be7 {[%emt 0:01:35]} 6. Bd3 {[%emt 0:01:59]} O-O {[%emt 0:01:50]} 7. h3 {[%emt 0:03:13]} Nc5 {[%emt 0:04:40]} 8. Bc2 {[%emt 0:00:03]} a5 {[%emt 0:03:23]} 9. Be3 {[%emt 0:00:16]} c6 {[%emt 0:04:12]} 10. dxc6 {[%emt 0:06:42]} bxc6 {[%emt 0:00:37]} 11. Bxc5 {[%emt 0:00:09]} dxc5 {[%emt 0:00:12]} 12. Qxd8 {[%emt 0:00:08]} Rxd8 {[%emt 0:00:18]} 13. Nf3 {[%emt 0:00:17]} Nd7 {[%emt 0:11:07]} 14. O-O-O {[%emt 0:02:35]} Ba6 {[%emt 0:08:40]} 15. b3 {[%emt 0:00:59]} f6 {[%emt 0:01:16]} 16. Na4 {[%emt 0:00:23]} Nf8 {[%emt 0:00:38]} 17. Rxd8 {[%emt 0:00:26]} Rxd8 {[%emt 0:00:17]} 18. Rd1 {[%emt 0:00:14]} Rb8 {[%emt 0:04:23]} 19. Ne1 {[%emt 0:03:49]} Kf7 {[%emt 0:03:07]} 20. Nd3 {[%emt 0:01:54]} Ne6 {[%emt 0:00:10]} 21. Rf1 {[%emt 0:00:41]} Bd6 {[%emt 0:03:00]} 22. Bd1 {[%emt 0:01:45]} Bc8 {[%emt 0:06:06]} 23. Bg4 {[%emt 0:03:17]} Nf4 {[%emt 0:00:31]} 24. Nxf4 {[%emt 0:01:16]} Bxg4 {[%emt 0:02:01]} 25. hxg4 {[%emt 0:00:52]} exf4 {[%emt 0:00:05]} 26. Rd1 {[%emt 0:02:05]} Ke6 {[%emt 0:01:04]} 27. f3 {[%emt 0:05:32]} Rh8 {[%emt 0:04:41]} 28. Rh1 {[%emt 0:00:48]} g6 {[%emt 0:00:27]} 29. Nb2 {[%emt 0:05:27]} h5 {[%emt 0:02:13]} 30. gxh5 {[%emt 0:00:35]} gxh5 {[%emt 0:00:17]} 31. Nd3 {[%emt 0:00:51]} h4 {[%emt 0:04:11]} 32. Kb2 {[%emt 0:27:18]} Kd7 {[%emt 0:02:18]} 33. Ka3 {[%emt 0:05:02]} Kc7 {[%emt 0:05:14]} 34. Ka4 {[%emt 0:00:23]} Rg8 {[%emt 0:17:13]} 35. Rxh4 {[%emt 0:02:43]} Rxg2 {[%emt 0:00:07]} 36. a3 {[%emt 0:00:08]} Rg3 {[%emt 0:04:23]} 37. Nxf4 {[%emt 0:03:28]} Rxf3 {[%emt 0:00:05]} 38. Rh7+ {[%emt 0:00:51]} Kb6 {[%emt 0:00:24]} 39. Ne6 {[%emt 0:00:28]} Re3 {[%emt 0:02:50]} 40. Rd7 {[%emt 0:00:41]} Be5 {[%emt 0:02:07]} 41. Nd8 {[%emt 0:20:24]} Bc7 {[%emt 0:12:13]} 42. Ne6 {[%emt 0:00:03]} Be5 {[%emt 0:00:08]} 43. Nd8 {[%emt 0:01:34]} Rxe4 {[%emt 0:07:01]} 44. Rb7+ {[%emt 0:00:11]} Ka6 {[%emt 0:00:07]} 45. Rf7 {[%emt 0:00:12]} Re1 {[%emt 0:07:47]} 46. Nxc6 {[%emt 0:05:48]} Bc3 {[%emt 0:00:22]} 47. Ne7 {[%emt 0:04:36]} Be5 {[%emt 0:06:04]} 48. Nc8 {[%emt 0:00:01]} Bb8 {[%emt 0:00:03]} 49. Rxf6+ {[%emt 0:00:48]} Kb7 {[%emt 0:00:20]} 50. Nb6 {[%emt 0:01:02]} Ra1 {[%emt 0:01:06]} 51. Kb5 {[%emt 0:02:28]} Kc7 {[%emt 0:00:37]} 52. Rc6+ {[%emt 0:06:25]} Kb7 {[%emt 0:00:14]} 53. Re6 {[%emt 0:01:36]} Kc7 {[%emt 0:00:25]} 54. Ka4 {[%emt 0:06:19]} Kd8 {[%emt 0:00:45]} 55. Nd5 {[%emt 0:00:47]} Bg3 {[%emt 0:00:25]} 56. Rg6 {[%emt 0:01:36]} Be5 {[%emt 0:00:26]} 57. Kb5 {[%emt 0:00:39]} Rxa3 {[%emt 0:00:32]} 58. Kc6 {[%emt 0:00:11]} Ke8 {[%emt 0:00:40]} 59. Re6+ {[%emt 0:00:02]} Kf7 {[%emt 0:00:02]} 60. Rxe5 {[%emt 0:00:21]} Rxb3 {[%emt 0:00:04]} 61. Kxc5 {[%emt 0:00:17]} a4 {[%emt 0:00:12]} 62. Re7+ {[%emt 0:00:53]} Kg6 {[%emt 0:00:12]} 63. Ra7 {[%emt 0:00:21]} a3 {[%emt 0:00:07]} 64. Kd6 {[%emt 0:00:18]} Kf5 {[%emt 0:00:23]} 65. c5 {[%emt 0:00:34]} Ke4 {[%emt 0:00:06]} 66. c6 {[%emt 0:00:19]} Rd3 {[%emt 0:00:12]} 67. Ra4+ {[%emt 0:00:09]} Rd4 {[%emt 0:00:23]} 68. Rxd4+ {[%emt 0:00:19]} Kxd4 {[%emt 0:00:02]} 69. c7 {[%emt 0:00:08]} a2 {[%emt 0:00:11]} 70. c8=Q {[%emt 0:00:08]} a1=B {[%emt 0:00:12]} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.13"]
[White "Jordanov, Mihail"]
[Black "Lim, Zhuo Ren"]
[Result "1/2-1/2"]
[ECO "B53"]
[WhiteElo "2193"]
[BlackElo "2311"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,71,14,13,10,17,24,18,6,21,0,0,0,2,-9,29,29,32,12,21,-14,-4,-10,-18,-13,15,21,17,10,24,20,10,14,61,0,0,0,14,14,74,-6,-3,-11,25,16,82,92,113,113,120,110,155,177,210,201,225,0,0,0,0,0,0,0,0,-518]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Qe3 g6 6. Be2 {B53: Sicilian: 2...d6: Lines with Qxd4.} Bg7 7. O-O Nf6 8. h3 O-O 9. Rd1 Be6 10. Ng5 Bd7 11. c4 {[#]} a6 $146 ({Predecessor:} 11... Nb4 12. Qb3 Na6 13. Nc3 Bc6 14. e5 Ne8 15. Nf3 Qa5 16. Bg5 f6 17. c5+ Kh8 18. Bxa6 Bxf3 19. gxf3 Qxa6 20. exd6 exd6 {1-0 (49) Ozalp,H-Mollamustafaoglu,O ICCF email 2013}) 12. Nc3 b5 13. cxb5 Nb4 14. Rb1 {And now a3 would win.} axb5 15. e5 dxe5 16. Bxb5 Qc7 {...Bf5 is the strong threat.} 17. Bxd7 Nxd7 18. a3 Nc2 19. Qe4 Nd4 20. Nd5 Qd6 {[#]} (20... Qd8 $1 $11 {deserves consideration.} 21. Nxe7+ (21. Qh4 h6 $15) 21... Qxe7 22. Rxd4 Nc5) 21. Nxe7+ $1 Qxe7 $11 22. Rxd4 $1 $40 {[%mdl 128] White has some attack.} Nc5 {Inhibits Ra4.} 23. Qe3 ({Don't play} 23. Qh4 h6 24. Rd5 (24. Nf3 $2 Bf6 $19) 24... hxg5 25. Bxg5 Qa7 $17) 23... Nb3 {[#]} 24. Rd5 ({Better is} 24. Rb4 $1 $16 Na5 25. Rb5) 24... Qb7 25. Rd3 Rfb8 26. Bd2 Nxd2 (26... Nd4 $11 {keeps the balance.}) 27. Qxd2 $16 {Black must now prevent Rd7.} Bh6 {[#]} 28. h4 $1 {[%cal Bh3h4,Bh4g5][%mdl 32]} Ra7 29. b4 Qa8 (29... Qe7 $142) 30. Qa2 {White is more active.} Bxg5 31. hxg5 Qe4 32. Qd2 (32. Re3 $18 Qf4 33. Qe2) 32... Rxa3 $1 $11 {The position is equal.} 33. Rd8+ Kg7 34. Rxb8 $4 {[%mdl 8192]} (34. Rd1 $11 {and White has nothing to worry.} Rxd8 35. Qxd8) 34... Qxb1+ $19 35. Kh2 {Threatening mate with Qd8.} Qe4 {( -> ...Qh4+)} (35... Ra1 $2 36. Qc3 Qf5 37. Qxa1 $18) 36. Rg8+ {[%mdl 32768] Weighted Error Value: White=0.18 (very precise) /Black=0.18 (very precise) . An unexpected result.} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.14"]
[White "Acor, Corey"]
[Black "Ronce, Nathan"]
[Result "1-0"]
[ECO "B26"]
[WhiteElo "2303"]
[BlackElo "2171"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,63,10,-4,0,1,68,31,48,12,14,16,12,0,0,0,0,0,0,-49,0,0,17,23,20,5,83,59,50,60,52,54,83,68,73,73,380,166,146,152,164,154,257,228,310,318,339,336,378,381,362,339]} 1. e4 c5 2. Nc3 d6 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. Be3 Rb8 7. Nge2 Nd4 8. O-O b5 {B26: Closed Sicilian: 3 g3, lines with early Be3.} 9. b4 {White wants to play a4.} e6 (9... Bg4 $1 $11) 10. Rb1 {[#]} Ne7 $146 {White is slightly better.} ({Predecessor:} 10... Bd7 11. f4 Ne7 12. Qd2 Bc6 13. e5 Bxg2 14. Kxg2 dxe5 15. bxc5 Nxe2 16. Nxe2 Qd5+ {0-1 (32) Tornes Rosquet,I (1558)-Casamayor Ferrer,M (1609) Artemisa 2018}) 11. f4 Nxe2+ 12. Nxe2 cxb4 13. Bxa7 Ra8 14. Be3 Rxa2 15. Rxb4 Bd7 16. Bd4 (16. Nd4 $11 {feels stronger.}) 16... e5 (16... Bxd4+ $15 17. Nxd4 Nc6 18. Nxc6 Bxc6) 17. fxe5 $11 dxe5 18. Qb1 Ra8 19. Be3 Rc8 {Inhibits Nc3.} (19... Qc7 $11) 20. c4 Bg4 $1 21. Nc3 $40 {[%cal Be2c3,Bc3d5,Bd5e7][%mdl 160] Strongly threatening Nd5. White is up to no good.} bxc4 22. dxc4 {[#] aiming for h3.} Nc6 23. Rb7 O-O 24. Nd5 {White is much more active.} Nd4 $2 {[%mdl 8192] This costs Black the game.} (24... Rb8 $16 {is a better chance.}) 25. Bxd4 (25. Ne7+ $142 Kh8 26. Nxc8 Bxc8 27. Rbxf7) 25... exd4 $18 26. Ne7+ Kh8 27. Nxc8 Bxc8 (27... d3 $16) 28. Rbxf7 Rxf7 29. Rxf7 d3 {[#]} 30. Rf3 $1 Qd4+ 31. Kh1 Qxc4 32. Qxd3 {Weighted Error Value: White=0.18 (very precise) /Black=0.46} ({Resist} 32. Rxd3 h6 33. Rd1 Be6 $18) 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.15"]
[White "Macicek, Jakub"]
[Black "Grutter, Tim"]
[Result "0-1"]
[ECO "E81"]
[WhiteElo "2250"]
[BlackElo "2194"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,73,43,27,64,45,51,43,76,60,83,42,45,29,33,22,60,69,74,74,90,1,13,-29,-39,-25,0,-88,-73,-81,-12,-16,-12,-29,-28,-146,-5,-180,0,0,0,-289,-300,-296,-283,-284,-166,-160,-158,-242,-35,-1159,-1084,-29995,-29996,-29999]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 c5 7. Nge2 Nc6 8. d5 Ne5 9. Ng3 e6 10. Be2 exd5 11. cxd5 Re8 {A65: Modern Benoni: 6 e4.} 12. O-O a6 13. a4 Rb8 {White is slightly better.} 14. Qd2 Qa5 {[#]} 15. Qc2 $146 ({White should play} 15. Rfb1 $16) ({Predecessor:} 15. h3 Qb4 16. f4 Nc4 17. Bxc4 Qxc4 18. e5 dxe5 19. fxe5 Nd7 20. Qf2 Nxe5 21. Nge4 Rf8 22. Bxc5 Nd3 23. Qh4 {1-0 (23) Sowray,P (2331)-Doran,C (2002) Ascot 2014}) 15... h5 $14 16. Nh1 Nh7 17. Nf2 g5 18. f4 gxf4 19. Bxf4 Qd8 20. Nfd1 (20. Kh1 $16) 20... Ng6 $1 $11 21. Bg3 (21. Bd2 {might be stronger.}) 21... h4 22. Bf2 Qg5 23. Ne3 (23. Kh1 $11) 23... Nf4 $17 24. Kh1 {[%cal Of2h4]} Bd4 {Black is more active.} (24... Nxe2 $17 25. Qxe2 Bxc3 26. bxc3 Rxe4) 25. Bf3 $1 $11 b5 {Inhibits Nc4.} 26. axb5 axb5 27. Nf5 (27. Ned1 $11) 27... Bxf2 (27... Bxf5 $17 28. exf5 Bxf2 29. Rxf2 Nf6) 28. Qxf2 $2 (28. Nxd6 $11 {and White is okay.} Bd4 29. Nxe8) 28... b4 $2 (28... Bxf5 $19 29. exf5 Nf6) 29. Nxd6 bxc3 30. Nxe8 $4 {[%mdl 8192]} (30. bxc3 $11 {and White stays safe.} Rd8 31. Nxc8) 30... cxb2 $19 31. Rab1 {Threatens to win with Be2.} Ba6 {[%csl LRe8,LRf1] To avoid Be2. Chess con chili.} 32. Rfd1 Rxe8 (32... Nd3 $142 $1 {[%cal Rd3f2]} 33. Qc2 Qe3) 33. Qxb2 Be2 {[%cal Oh7f6] Strongly threatening ...Nf6!} 34. Rg1 {[#]} (34. Rd2 $17 Nd3 35. Qa2 Nf2+ 36. Kg1 Bxf3 37. Rxf2 Bxe4 38. d6) 34... h3 $2 35. Qc3 $2 {[%mdl 8192] [#]} (35. Qd2 $15) 35... Nd3 $1 {[%cal Rd3f2]} 36. Rgf1 {Prevents Nf2+.} (36. Rbf1 Bxf1) 36... Bxf3 37. gxf3 Qg2# {Weighted Error Value: White=0.86/Black=0.46} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.16"]
[White "Bomans, Arno"]
[Black "Schouten, Mathias Lind"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2246"]
[BlackElo "2165"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,97,0,40,-20,-25,-58,16,-29,-21,-16,0,-20,28,32,56,51,46,45,72,31,88,56,59,61,29,40,72,10,20,20,11,-35,-33,-38,-31,-20,0,0,0,0,39,0,97,101,102,114,135,132,120,124,155,124,175,57,122,0,86,77,118,42,190,50,289,183,146,43,124,43,82,0,0,0,83,0]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 Be7 7. Qc2 h6 8. Bf4 O-O 9. h3 Bd6 10. Bxd6 Qxd6 11. Bd3 Re8 12. Nf3 Nbd7 13. O-O-O Qe7 14. Nd2 {[#] D36: Queen's Gambit Declined: Exchange Variation: Main line (5 Bg5 c6 6 Qc2).} (14. Rhg1 $14) 14... b5 $146 ({Predecessor:} 14... Nf8 15. g4 Be6 16. Rdg1 Rec8 17. g5 hxg5 18. Rxg5 N8h7 19. Rg2 Kh8 20. Rhg1 Rg8 21. Nf3 Rac8 {1-0 (29) Rowson,J (2574)-Tommasini,E (2161) Porto Mannu 2013}) 15. Kb1 Nb6 (15... a5 $1 $15) 16. Rhe1 (16. Rhg1 $142) 16... Nc4 17. Ka1 Bd7 18. Nb3 Nd6 (18... a5 $142) 19. Nc5 $11 Nde4 20. N3xe4 dxe4 21. Bf1 Bf5 22. Rc1 {White is more active.} (22. f4 $1 $16) 22... Rac8 (22... Nd5 $14) 23. g4 Bg6 24. Qd2 Nd5 25. Rc2 Qc7 26. Na6 (26. Rec1 $16) 26... Qb6 27. Nb4 {[%cal Ba6b4,Bb4c2,Bc2e1,Be1g2,Bg2h4][%mdl 32]} Ne7 {Hoping for ...a5.} 28. Rc5 (28. a3 $11 {feels stronger.}) 28... a5 $15 29. Nc2 Red8 {[%cal Ob6c5] Strongly threatening ...Qxc5!} 30. Rd1 Rd6 31. Ne1 Rcd8 {[%cal Ob6c5] ...Qxc5! is the strong threat.} 32. Rdc1 Nd5 33. Qc2 Re8 (33... Nb4 $11 34. Qc3 Rf6) 34. a3 $16 {[%cal Rc5c6]} ({Of course not} 34. Rxc6 Nb4 $1 35. Rxb6 Nxc2+ 36. Nxc2 Rxb6 $15) 34... Ree6 35. Ng2 $1 Rf6 {To avoid Nf4} 36. Nh4 b4 37. Nxg6 fxg6 38. Bg2 b3 (38... Qa7 $16 {was called for.}) 39. Qc4 ({Much less strong is} 39. Qxe4 Rxf2 40. h4 (40. Rxc6 Rxc6 41. Qe8+ Kh7 $11) 40... Rff6 $16) (39. Qe2 $18) 39... Rde6 (39... Rxf2 $14 40. Bxe4 Kh7) 40. Rf1 (40. h4 $1 $16) 40... Kh7 (40... g5 $11 {remains equal.}) 41. h4 Rf7 (41... Rf8 $142) 42. g5 (42. h5 $1 $16 {[%cal Rh5g6]} gxh5 43. gxh5) 42... Rf8 (42... h5 $1 $14) 43. Kb1 (43. Bh3 $18 Rd6 44. Bg2) 43... Rf7 $2 (43... h5 $1 $14) 44. Bh3 Rd6 45. Bg4 ({White should try} 45. f4 $16) 45... a4 {[#]} (45... Rf8 $14) 46. Be2 ({White should play} 46. Bh3 $1 $16) 46... Ra7 47. Rc1 {[%cal Rc5c6]} Rf7 48. Rf1 Ra7 {[#]} 49. Rc1 {Weighted Error Value: White=0.38/Black=0.44} ({Better is} 49. gxh6 $1 $16 gxh6 50. Qc1) 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.17"]
[White "Nielsen, Andre"]
[Black "Oye-Stromberg, Alexander"]
[Result "1/2-1/2"]
[ECO "C55"]
[WhiteElo "2232"]
[BlackElo "2238"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,70,43,31,42,22,48,38,31,20,26,25,14,6,11,-8,60,57,48,50,41,31,34,18,5,0,0,0,0,0,0,0,6,-38,-22,-60,0,0,0,0,0,0,0,-12,-22,-21,-9,-14,-19,-34,-13,-14,-15,-15,0,0,0,0,0,-16,-16,-37,-25]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 h6 5. O-O d6 6. c3 g5 $1 {[%mdl 4] is now more promising than 6...g6. C55: Two Knights: 4 d3, 4 d4 exd4 5 e5 and Max Lange Attack.} 7. Nbd2 {[%cal Bb1d2,Bd2c4,Bc4e3,Be3f5][%mdl 32]} Bg7 8. Bb3 O-O {White is slightly better.} 9. Nc4 Be6 10. Re1 a5 {[#]} 11. Ne3 $146 ({Predecessor:} 11. a4 Qd7 12. Ne3 d5 13. Qc2 Rad8 14. h3 Kh8 15. Ra3 Rfe8 16. Bd2 Bf8 17. Raa1 {1-0 (26) Wang,J (2467)-Stearman,J (2435) Charlotte 2021}) 11... d5 12. Qc2 Qd7 (12... b5 $11) 13. Ba4 $1 $14 {[%cal Of3e5] aiming for Nxe5!} Qd6 14. exd5 Bxd5 15. Bxc6 (15. Nf5 {is interesting.} Qd7 16. Rxe5 Bxf3 17. gxf3 Nd5 18. Nxg7 Kxg7 19. d4) 15... bxc6 16. Nf5 {[%csl LRd6,LRe5]} Qd7 17. Nxg7 Bxf3 18. gxf3 {[%cal Od3d4]} Kxg7 19. Rxe5 Rfe8 20. d4 {[%cal Oh2h4]} Qh3 21. Be3 (21. Qe2 $11 {is superior.}) 21... Qxf3 {[#] White must now prevent ...Ng4.} 22. Qf5 Qg4+ (22... Qxf5 $1 $15 23. Rxf5 Nd5) 23. Qxg4 $11 Nxg4 24. Rc5 {[%cal Oe3g5]} Re6 25. Re1 a4 26. d5 cxd5 27. Bd4+ Kg6 28. Rxe6+ fxe6 {[%cal Bf7e6,Be6e5,Be5d4][%mdl 32]} 29. Rxc7 {[%mdl 4096] Endgame KRB-KRN} e5 30. h3 exd4 31. hxg4 d3 {[#] And now ...d2 would win.} 32. Rd7 Ra5 {...d2 is the strong threat.} 33. Kf1 Rb5 34. Ke1 Rxb2 35. Rxd5 Re2+ {Weighted Error Value: White=0.08 (flawless) /Black=0.10 (very precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.18"]
[White "Shatil, Shir"]
[Black "Babula, Vlastimil"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "1977"]
[BlackElo "2561"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,117,15,16,31,20,21,25,2,30,-39,-18,-24,-20,-53,-41,-56,119,111,165,156,157,151,172,147,262,124,303,250,251,154,151,152,227,173,235,239,235,200,244,189,204,191,198,190,233,233,243,0,214,201,195,131,178,85,85,33,49,44,44,30,50,37,137,100,91,62,101,125,108,88,208,201,193,204,341,341,395,349,410,423,385,388,372,354,466,397,456,422,754,740,744,739,738,716,1163,1148,999,946,1058,975]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. h3 e5 7. d5 a5 8. Bg5 Na6 9. Be2 Qe8 10. Nd2 Nd7 11. a3 {[%cal Ob2b4] E92: King's Indian: Classical: 6 Be2 e5: 7 dxe5, 7 Be3 and Petrosian System without 7...Nbd7.} f6 12. Be3 f5 {Strongly threatening ...f4.} 13. f3 {White has an edge.} Qe7 {[%cal Og7h6]} 14. b4 {[#]} (14. O-O $1 $11) 14... Bh6 $1 $15 15. Bf2 {[%cal Oc4c5]} Nf6 {[#]} 16. g4 $146 ({Predecessor:} 16. c5 dxc5 17. Bxa6 Rxa6 18. Bxc5 Qd8 19. b5 Ra8 20. Ra2 c6 21. dxc6 Be6 22. Rc2 {½-½ (43) Postny,E (2585)-Nedev,T (2490) Rio Achaea 2018}) 16... Bd7 17. Rb1 Qf7 $2 (17... Kh8 $15 {stays ahead.}) 18. exf5 $1 $16 (18. bxa5 fxg4 19. hxg4 Nxg4 $1 {[%mdl 512]} 20. Rxh6 Nxh6 21. Rxb7 Bc8 $17) 18... Kh8 (18... axb4 $16 {is a better defense.} 19. fxg6 Qxg6 20. axb4 Bf4) 19. fxg6 $18 (19. bxa5 gxf5 20. Rxb7 fxg4 $11) 19... Qxg6 20. Nde4 Nxe4 21. Nxe4 Rf4 (21... axb4 $16 22. axb4 c6) 22. Qd3 (22. bxa5 $18 Bc8 23. Qc2) 22... Raf8 $2 (22... axb4 $16 23. axb4 c6) 23. Bg3 R4f7 24. O-O (24. bxa5 Bc8 25. h4 Bf4 $18) 24... Bf4 25. Kg2 Rg8 (25... Rg7 $16 26. b5 (26. bxa5 Bf5 $16) 26... Nb8) 26. Qc3 (26. bxa5 $6 Bxg3 27. Nxg3 Qxd3 28. Bxd3 Nc5 $16) 26... Bxg3 (26... Qh6 {was called for.} 27. Bxf4 (27. bxa5 Bxg3 28. Nxg3 Nc5 $16) 27... Rxf4) 27. Nxg3 Qg5 28. Bd3 Qh4 29. Be4 Rf4 30. Rh1 Rgf8 31. Rbf1 Rg8 (31... R4f7 $142 32. Ra1 (32. Bf5 Bxf5 33. f4 Bd7 $17) 32... b6) 32. Ne2 Rf7 33. Ng3 $2 (33. f4 $18 Rgf8 34. f5) 33... Rgg7 $2 (33... Rf4 $1 $11 {and Black stays safe.}) 34. Rfg1 {Active counter play!} Rf4 35. Kf2 (35. Rb1 $18) 35... Rgf7 $16 {[#] Threatens to win with ...Rxe4.} 36. Ke2 (36. Re1 $1 $18 {is more deadly.}) 36... Rf8 37. Kd2 ({Better is} 37. Rg2 $16) 37... c6 $14 38. Ne2 $1 (38. bxa5 Nc5 39. dxc6 Bxc6 40. Bxc6 bxc6 $19) 38... R4f7 39. f4 $1 axb4 40. axb4 Re7 (40... Nc7 $14) 41. f5 cxd5 42. Bxd5 b5 {[#]} 43. Ra1 $1 $36 {[%mdl 2048] White is on the roll.} Nc7 44. Qg3 {Really sharp!} Qxg3 (44... Qf6 $16) 45. Nxg3 $18 bxc4 46. Bxc4 d5 {[#]} (46... Bb5 {might work better.}) 47. Ra7 $1 Bc6 (47... dxc4 48. Rxc7) 48. Be2 ({Less strong is} 48. b5 dxc4 49. bxc6 Rf6 $18) 48... d4 49. Rc1 Nd5 50. Rxe7 Nxe7 51. Rc5 e4 52. Re5 e3+ 53. Kd3 {White is clearly winning.} Rd8 (53... Nd5 $142 54. Kxd4 Nxb4) 54. Rxe7 Bb5+ 55. Ke4 d3 {[#]} 56. Bxd3 $1 Rxd3 (56... Bxd3+ 57. Kxe3) 57. Re5 Bc4 58. Rc5 Rc3 59. Kd4 {[%csl LRc3,LRc4] Weighted Error Value: White=0.25 (precise) /Black=0.45} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.19"]
[White "Bochnicka, Vladimir"]
[Black "Soucek, Petr"]
[Result "1/2-1/2"]
[ECO "A36"]
[WhiteElo "2222"]
[BlackElo "2117"]
[Annotator "TA"]
[PlyCount "42"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,42,10,4,35,29,25,34,56,52,64,0,0,0,1,0,0,14,0,0,0,-14,24,-5,0,0,0,-10,-14]} 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e4 e5 6. Nge2 Nge7 7. O-O O-O 8. d3 d6 9. Be3 h6 {A36: Symmetrical English vs ...g6: 4 Bg2 Bg7.} 10. Rb1 Be6 {[#]} 11. Nd5 $146 ({Predecessor:} 11. Qd2 Kh7 12. h3 f5 {½-½ (12) Dittmann,J (1526)-Svane,R (1922) Neumuenster 2008}) 11... Nd4 {White is slightly better.} 12. b4 b6 {[%cal Bb7b6,Bb6c5,Bc5d4][%mdl 32]} 13. h3 (13. bxc5 $14 dxc5 14. Nxd4 exd4 15. Bd2) 13... Nxd5 $11 14. cxd5 Bd7 15. bxc5 bxc5 16. Nxd4 cxd4 17. Bd2 Qc8 18. Qb3 Qa6 19. Bb4 Rfc8 {The position is equal.} 20. Rfc1 Bf8 21. Bf1 Rab8 {Weighted Error Value: White=0.14 (very precise) /Black=0.08 (flawless)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.20"]
[White "Novotny, Michal"]
[Black "Kudrytskyi, Stanislav"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2236"]
[BlackElo "2057"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,53,52,48,37,41,49,25,20,20,62,58,191,179,213,196,187,0,0,23,17,11,48,27,66,16,22,-11,166,11,391,408,908,495,29987,29988,29984,1061,29998,29999]} 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. Re1 c6 8. a4 b6 {The old main line.} 9. h3 Bb7 {C41: Philidor Defence.} 10. Ba2 Qc7 11. dxe5 {was the old line (11.Nh4).} dxe5 {White has an edge.} 12. Nh4 {[%cal Bf3h4,Bh4f5,Bf5e3][%mdl 32]} Rfe8 (12... Bc8 $11 {might be stronger.}) 13. Qf3 $14 {White is more active.} Bf8 ({Better is} 13... Nc5 $14) 14. Nf5 $18 {[#]} b5 $146 ({Predecessor:} 14... Rad8 15. Bg5 g6 16. Ne3 Be7 17. Ng4 Nxg4 18. Qxf7+ Kh8 19. Bxe7 Rf8 20. Bxf8 Rxf8 21. Qe7 Ngf6 22. Rad1 Re8 23. Qd6 Qd8 {1-0 (23) Fedorchuk,S (2618)-Moussard,J (2426) Paris 2011}) 15. Bg5 b4 {[#]} 16. Ne2 (16. Rad1 $1 $18 Kh8 (16... g6 17. Nh6+) 17. Nb1 (17. Bxf7 bxc3 18. Bxe8 Rxe8 $11)) 16... c5 $1 $11 17. Neg3 {Strongly threatening Nh5.} c4 18. Rad1 {[%cal Of5h6]} Re6 19. Ne3 $1 Rc6 20. Ngf5 ({White should try} 20. Rd2 $14) 20... Re8 21. Bh4 (21. c3 $5 {[%cal Rc3b4]}) 21... Nb6 $2 {[#]} (21... g6 $11 22. Bxc4 Rxc4 23. Nxc4 gxf5 24. Bxf6 Nxf6 25. Qxf5 Qxc4 26. Qxf6 Qc6) 22. a5 $2 ({Only move:} 22. Nh6+ $1 $18 {[%mdl 512]} Kh8 23. a5 $1) 22... Na4 $2 {[%mdl 8192]} (22... Nbd7 $11) 23. Nxc4 $18 {[%cal Oc4d6] Threatens to win with Ncd6!} Rxc4 (23... Nc5 $142 24. Nh6+ gxh6) 24. Bxf6 Re6 {[#]} (24... g6 $18 25. Bxc4 Qxc4) 25. Nh6+ $1 {[%mdl 512]} Kh8 {[#]} 26. Bd8 Qc6 27. Qxf7 {Weighted Error Value: White=0.54/Black=1.23} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.21"]
[White "Azhar, Puteri Munajjah Az-Z"]
[Black "Van Foreest, Machteld"]
[Result "1/2-1/2"]
[ECO "D45"]
[WhiteElo "2052"]
[BlackElo "2189"]
[Annotator "NA"]
[PlyCount "119"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:03]} d5 {[%emt 0:10:33]} 2. c4 {[%emt 0:00:09]} c6 {[%emt 0:00:04]} 3. Nc3 {[%emt 0:00:16]} Nf6 {[%emt 0:00:04]} 4. Nf3 {[%emt 0:00:37]} e6 {[%emt 0:00:29]} 5. e3 {[%emt 0:00:59]} Bd6 {[%emt 0:01:33]} 6. Be2 {[%emt 0:00:50]} O-O {[%emt 0:00:16]} 7. Qc2 {[%emt 0:00:36]} Nbd7 {[%emt 0:09:44]} 8. O-O {[%emt 0:07:42]} b6 {[%emt 0:03:49]} 9. e4 {[%emt 0:04:14]} dxe4 {[%emt 0:01:17] 9...Nxe4 is more fashionable.} 10. Nxe4 {[%emt 0:00:07]} Be7 {[%emt 0:10:37]} 11. b3 {[%emt 0:13:52]} Nxe4 {[%emt 0:01:45]} 12. Qxe4 {[%emt 0:00:48]} Bb7 {[%emt 0:01:16] [#]} 13. Rd1 $146 {[%emt 0:02:25]} ({Predecessor:} 13. Bb2 Re8 14. Bd3 Nf6 15. Qh4 h6 16. Ne5 Nd7 17. Qe4 f5 18. Qe2 Nxe5 19. dxe5 Qc7 20. Bc3 Rad8 21. b4 Rd7 22. Rfd1 Red8 23. Bc2 {½-½ (23) Gonzalez Vega,A (2291)-Romero Nunez,W (2125) Havana 2010}) 13... Nf6 {[%emt 0:00:33]} 14. Qc2 {[%emt 0:02:24]} Qc7 {[%emt 0:01:19]} 15. Bb2 {[%emt 0:14:04]} Rfd8 {[%emt 0:00:41]} 16. c5 {[%emt 0:03:58]} Nd5 {[%emt 0:01:20]} 17. Ne5 {[%emt 0:04:56]} Bf6 {[%emt 0:07:37]} 18. Bf3 {[%emt 0:01:55]} Rac8 {[%emt 0:04:11]} 19. a3 {[%emt 0:01:28]} bxc5 {[%emt 0:09:08]} 20. Qxc5 {[%emt 0:00:16]} Be7 {[%emt 0:00:08]} 21. Qc2 {[%emt 0:00:35]} c5 {[%emt 0:00:50]} 22. dxc5 {[%emt 0:00:44]} Bd6 {[%emt 0:12:37]} 23. Re1 {[%emt 0:13:22]} Bxc5 {[%emt 0:03:36]} 24. b4 {[%emt 0:11:29]} Bb6 {[%emt 0:00:09]} 25. Qxc7 {[%emt 0:00:09]} Rxc7 {[%emt 0:00:08]} 26. Rac1 {[%emt 0:00:42]} Rxc1 {[%emt 0:00:25]} 27. Bxc1 {[%emt 0:03:44]} Rc8 {[%emt 0:01:10]} 28. Nd7 {[%emt 0:03:33]} Bd4 {[%emt 0:01:36]} 29. Be3 {[%emt 0:04:11]} Bb2 {[%emt 0:04:01]} 30. Bxa7 {[%emt 0:03:24]} Bxa3 {[%emt 0:01:15]} 31. b5 {[%emt 0:00:20]} Rc7 {[%emt 0:05:53]} 32. Ne5 {[%emt 0:00:36]} f6 {[%emt 0:02:38]} 33. Nd3 {[%emt 0:01:16]} Rc3 {[%emt 0:01:01]} 34. Bxd5 {[%emt 0:01:05]} (34. Be2 $1 $11 {remains equal.}) 34... exd5 {[%emt 0:01:05]} 35. Nf4 {[%emt 0:00:18]} Rb3 {[%emt 0:00:09]} 36. Ne6 {[%emt 0:00:35]} Rxb5 {[%emt 0:00:35]} 37. Nd8 {[%emt 0:00:10]} Be7 {[%emt 0:00:48]} 38. Ne6 {[%emt 0:00:18]} Ra5 {[%emt 0:01:48]} 39. Bd4 {[%emt 0:00:24] [#]} Kf7 {[%emt 0:01:36]} (39... Bd6 $1 $17 40. Nd8 Bc8) 40. Nxg7 {[%emt 0:00:24]} Bc8 {[%emt 0:01:20]} 41. Nh5 {[%emt 0:30:36]} Ra4 {[%emt 0:30:38]} 42. Bb2 {[%emt 0:00:00]} Ra2 {[%emt 0:00:00]} 43. Bd4 $1 {[%emt 0:00:00]} Ra4 {[%emt 0:00:00]} 44. Bb2 {[%emt 0:00:00]} Bg4 {[%emt 0:00:00]} 45. Ng3 {[%emt 0:00:00]} Bc5 {[%emt 0:00:00]} 46. Ra1 {[%emt 0:00:00]} (46. Rc1 $1 $11 {keeps the balance.} Rc4 47. Rxc4 dxc4 48. Kf1) 46... Rf4 {[%emt 0:00:00]} 47. Nh1 {[%emt 0:00:00]} Rb4 {[%emt 0:00:00]} 48. Bc3 {[%emt 0:00:00]} Rb3 {[%emt 0:00:00]} 49. Be1 {[%emt 0:00:00]} d4 {[%emt 0:00:00]} 50. f3 $17 {[%emt 0:00:00]} Be6 {[%emt 0:00:00]} 51. Bf2 {[%emt 0:00:00]} Rc3 {[%emt 0:00:00]} 52. Ng3 {[%emt 0:00:00]} f5 {[%emt 0:00:00]} 53. Ne2 {[%emt 0:00:00]} Rd3 {[%emt 0:00:00]} 54. Rc1 {[%emt 0:00:00]} Ba3 {[%emt 0:00:14]} 55. Rc7+ {[%emt 0:00:31]} Ke8 {[%emt 0:01:33]} 56. Bxd4 {[%emt 0:00:08]} Rd2 {[%emt 0:01:44]} 57. Kf2 {[%emt 0:00:08]} Bd6 {[%emt 0:01:39]} 58. Rc3 {[%emt 0:01:47]} Kd7 {[%emt 0:01:27]} 59. Ke3 {[%emt 0:01:32]} Ra2 {[%emt 0:00:03]} 60. Bc5 {[%emt 0:03:27]} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.22"]
[White "Finn, Peter"]
[Black "Winter, Ondrej"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "2020"]
[BlackElo "2153"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,95,35,38,40,44,56,51,50,54,54,51,57,55,51,41,48,43,85,76,93,96,104,103,114,102,107,114,127,123,170,122,120,124,130,31,153,145,169,166,155,137,164,85,175,176,197,81,80,72,147,179,188,186,176,152,152,150,159,93,95,83,83,83,177,83,161,83,134,92,221,8,8,0,0,0,8,8]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 d6 8. Be2 O-O 9. O-O Bd7 10. Re1 Nxd4 11. Bxd4 Bc6 {B38: Sicilian: Maroczy Bind with 5...Bg7 and 7...0-0.} 12. Qc2 a5 13. b3 Nd7 {White is slightly better.} 14. Bxg7 Kxg7 15. Rad1 Qb6 {[#]} 16. Nd5 $146 ({Predecessor:} 16. h4 Ne5 17. a3 f5 18. Nd5 Bxd5 19. exd5 f4 20. Qc3 Kg8 21. b4 Qa7 22. c5 axb4 23. axb4 {1-0 (54) Fonteneau,B (2138)-Battaglia,R (2164) ICCF email 2015}) 16... Bxd5 17. exd5 Nc5 18. Bf1 Rfe8 (18... e6 $14 {deserves consideration.}) 19. Re3 $16 Rad8 20. g3 e5 21. dxe6 $1 fxe6 22. Qc3+ e5 23. a3 Ne6 24. Rd5 a4 (24... Rf8 $16) 25. Rb5 (25. bxa4 $18 g5 26. Bg2) 25... Qc7 26. Bg2 (26. bxa4 Nd4 $14) 26... b6 27. Qb4 (27. bxa4 $16 {Hoping for a5.} Kh8 28. Qb2) 27... axb3 (27... Rb8 $1 $14) 28. Rxb6 Rb8 29. Rxb3 {[%cal Rb6b8]} Rxb6 30. Qxb6 Qxc4 31. Qb7+ (31. Qa7+ $1 $18 Nc7 32. Rb7) 31... Nc7 (31... Kh6 $16 {was worth a try.}) 32. Rb6 $1 $18 {Rc6 is the strong threat.} Re7 (32... Qc1+ $2 33. Bf1 Re7 34. Rc6 Qxa3 35. Rxc7 $18) 33. Qc6 ({Don't play} 33. Rxd6 $6 Qc1+ 34. Bf1 Qxa3 $14) (33. Rc6 $18 {is the precise move to win.} Qf7 34. Qb4 (34. Rxd6 Ne8 $17)) 33... Qxc6 $16 34. Bxc6 {[%mdl 4096] Endgame KRB-KRN} d5 (34... Ne6 $142) 35. a4 $1 {[%cal Ba3a4,Ba4a5][%mdl 32]} Re6 36. a5 {[%cal Oc6d5]} Kf6 37. Bb7 Ke7 38. Kf1 {White is more active.} Kd7 39. Rxe6 (39. Ke2 $142) 39... Kxe6 {KB-KN} 40. a6 Nb5 41. Ke2 Kd6 (41... Na7 $16) 42. Kd3 (42. Ke3 $1 $18 {and White stays clearly on top.}) 42... Kc5 (42... e4+ $16 {is a better defense.} 43. Ke3 Na7) 43. h4 $1 $18 h6 {[#]} ({Better is} 43... Na7) 44. f4 $1 $16 e4+ {[#]} (44... exf4 $16 {was called for.} 45. gxf4 Na7) 45. Ke3 $2 (45. Kd2 $1 $18) 45... h5 $11 {The position is equal.} 46. Bc8 d4+ 47. Kd2 {Threatens to win with Bb7.} Kb6 {Strongly threatening ...Nd6.} 48. f5 {Weighted Error Value: White=0.25 (precise) /Black=0.24 (precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.23"]
[White "Lhotska, Anna"]
[Black "Cornelisse, John"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2014"]
[BlackElo "2173"]
[Annotator "TA"]
[PlyCount "20"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,19,-11,0,-20,2,4,62,-579,-585,-561,-563,-29999]} 1. e4 c6 2. d4 d5 3. f3 Qb6 4. Nc3 dxe4 5. fxe4 e5 $1 6. dxe5 {[#] aiming for Bc4. B12: Caro-Kann: Advance Variation.} Be6 {To avoid Bc4 6...Bc5 is not played anymore.} 7. Nf3 Bc5 {[#] Prevents Nd4.} (7... Nd7 $11) 8. Na4 $146 {[%mdl 8192]} (8. Qd2 $14 {keeps the upper hand.}) ({Predecessor:} 8. Bd3 Be3 9. Na4 Qa5+ 10. b4 Qxa4 11. Bxe3 Qxb4+ 12. Bd2 Qa4 13. Rb1 Nd7 14. Rxb7 {1-0 (36) Bosiocic,M (2503)-Predojevic,B (2651) Plovdiv 2008}) 8... Bf2+ $19 9. Ke2 Bc4+ 10. Kd2 Qe3# {Weighted Error Value: White=2.25/Black=0.22 (precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.14"]
[Round "9.24"]
[White "Sindler, Michal"]
[Black "Yakimenko, Alexander A."]
[Result "1-0"]
[ECO "C16"]
[WhiteElo "2138"]
[BlackElo "2055"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,51,20,15,45,41,97,111,231,112,102,124,116,117,111,110,104,90,167,162,395,407,402,386,397,397,379,378,337,311,306,155,1255,1255,1255,1249,1225,1220,1487,1487,1479,1479]} 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 b6 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 O-O {C16: French: 3 Nc3 Bb4 4 e5: Lines without ...c5.} 8. Bg5 Qd7 (8... Nd7 $14) 9. Bd3 $1 $16 {[%cal Od3h7]} Re8 {[#]} (9... Nf5 $16) 10. Nf3 $146 (10. h4 $1 $18 {and the rest is easy. Threatens to win with Bf6.} Kh8 11. Qh5) ({Predecessor:} 10. h4 Kh8 11. h5 h6 12. Nf3 Ba6 13. Bf6 Rg8 14. Qf4 Bxd3 15. Qxh6+ Bh7 16. Ng5 gxf6 17. Qxh7# {1-0 (17) Kosintseva,T (2496)-Krush,I (2491) Khanty-Mansiysk 2014}) 10... Ba6 11. Bf6 $40 {[%csl Gf6][%cal Rg4g7][%mdl 128] White has strong attack. White is more active.} Ng6 12. Bxa6 Nxa6 {[#]} 13. h4 $1 {[%cal Bh2h4,Bh4h5][%mdl 32] And now h5! would win.} gxf6 14. exf6 {Hoping for h5.} Qd8 {[#]} (14... Qc6 $16 15. Kd1 Qxc3) 15. Qg5 $1 $18 (15. h5 Qxf6 16. hxg6 fxg6 $11) 15... e5 $2 (15... Nc5 16. dxc5 h6) 16. h5 {[%mdl 64] Pin} exd4+ 17. Kf1 h6 (17... dxc3 $2 18. hxg6 fxg6 19. f7+ Kg7 20. fxe8=N+ Qxe8 21. Qh6+ Kf7 22. Qxh7+ Kf6 23. Qh4+ Ke6 24. Re1+ Kd6 25. Rxe8 $18) 18. Qxh6 {[%csl Gf6][%cal Rh6g7]} Qxf6 {[%cal Of6h8]} 19. hxg6 {The board is on fire.} fxg6 20. Qh7+ (20. cxd4 Qg7 21. Qg5 Nc5 22. Qxd5+ Ne6) 20... Kf8 21. Nh4 ({Weaker is} 21. Nxd4 Qg7 $16) ({Not} 21. Qh6+ Ke7 22. cxd4 Rh8 23. Qe3+ Kd6 24. Rxh8 Rxh8 $14) ({Only move:} 21. cxd4 $18 Qg7 22. Qh3 (22. Ne5 Qxh7 23. Rxh7 Kg8 $18)) 21... Re6 {[#] This move loses the game for Black.} (21... Qg7 $16 22. Nxg6+ Kf7) 22. Rh3 $1 {Rf3 is the strong threat. White is clearly winning.} ({Less strong is} 22. Nf3 Rae8 $16) 22... Ke8 23. Qg8+ {[%mdl 64] Skewer} Kd7 24. Qxa8 Qe5 25. Nf3 Qe2+ 26. Kg1 {Weighted Error Value: White=0.16 (very precise) /Black=0.39} 1-0

