[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

