[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

