[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.23"]
[Round "2.1"]
[White "Tomczak, Jacek"]
[Black "Sadzikowski, Daniel"]
[Result "1/2-1/2"]
[ECO "C91"]
[WhiteElo "2563"]
[BlackElo "2374"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,81,10,16,22,1,0,6,-3,18,27,0,0,0,11,0,0,0,0,0,0,0,0,0,0,0,0,0,12,0,65,57,64,79,63,68,55,67,71,64,36,53,89,81,88,82,108,77,99,94,108,38,35,31,25,13,2,0,0,0,0,0,0,0]} 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. d4 Bg4 10. Be3 $1 {10.Be3 is better than 10.d5.} Bh5 11. Nbd2 exd4 {C91: Closed Ruy Lopez: 7...d6 8 c3 0-0 9 d4.} 12. cxd4 Na5 13. d5 c5 14. dxc6 {[#]} Rc8 $146 ({Predecessor:} 14... Nxc6 15. Nf1 Ne5 16. Ng3 Bg4 17. Qe2 a5 18. a3 g6 19. Red1 Nfd7 20. h3 Nxf3+ 21. gxf3 Bxh3 {½-½ (44) Mendl,M (2538)-Sasikiran,K (2548) ICCF email 2018}) 15. Rc1 Nxc6 16. Nf1 {[%cal Bd2f1,Bf1g3,Bg3f5,Bf5d6][%mdl 32]} Bg6 17. Nh4 Bxe4 18. Ng3 d5 19. Nhf5 Bb4 {...Bxf5 is the strong threat.} 20. Bd2 Bxd2 21. Qxd2 Bxf5 22. Nxf5 Kh8 $1 23. Qf4 Re8 24. Red1 $40 {[%mdl 128] And now Nd6 would win. White mounts an attack.} Re4 (24... Re6 $11) 25. Nd6 $14 Rxf4 26. Nxf7+ {[%mdl 64] [#] Double Attack} Kg8 27. Nxd8 Rxd8 28. Rxc6 a5 29. a3 a4 30. Ba2 b4 31. g3 Re4 {[#]} 32. Kf1 $1 Kf8 33. Rc5 bxa3 34. bxa3 Rb8 35. Rc2 ({Much weaker is} 35. Bxd5 $6 Re5 $11) (35. Ra5 $16) 35... Rb5 36. Rcd2 {[%cal Ra2d5]} Re5 37. Rd4 Rb2 {The position is equal.} 38. R1d2 Rxd2 39. Rxd2 Re7 40. Rd4 Rb7 41. Rd2 {Accuracy: White = 86%, Black = 89%.} 1/2-1/2

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.23"]
[Round "2.1"]
[White "Piorun, Kacper"]
[Black "Krasenkow, Michal"]
[Result "1/2-1/2"]
[ECO "C80"]
[WhiteElo "2539"]
[BlackElo "2521"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,81,-2,0,0,2,0,0,0,0,-11,0,-16,-5,-24,-24,-24,-23,-24,-24,-24,-24,-24,-24,-24,-23,-25,-20,-20,-3,-2,0,0,0,0,0,0,0,0,0,0,0,0,12,12,20,20,20,20,164,161,1023,21,12,24,41,27,20,0,0,0,8,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. Nxe5 Nxe5 9. dxe5 c6 10. c3 Bc5 11. Nd2 {C80: Open Ruy Lopez: Sidelines and 9 Nbd2.} Nxd2 12. Bxd2 Bf5 13. Qf3 Qd7 14. Be3 {[#]} Be7 $146 ({Predecessor:} 14... Bxe3 15. Qxe3 O-O 16. Rfe1 Rab8 17. f3 Rfe8 18. Qc5 Re6 19. Re3 Qe7 20. Qxe7 Rxe7 {½-½ (51) Petrosian,T-Teschner,R Oberhausen 1961}) 15. a4 O-O 16. Qe2 Qe6 17. f4 f6 18. axb5 axb5 19. Bd4 fxe5 20. Qxe5 Qxe5 21. Bxe5 Bd3 22. Rxa8 Rxa8 23. Rc1 Rf8 24. g3 g5 25. Kf2 gxf4 26. gxf4 Bc5+ 27. Kf3 Be4+ 28. Ke2 Rf5 29. Bc2 $1 Rh5 30. Bxe4 Rxh2+ 31. Kf3 {And now Bf5 would win.} Rf2+ 32. Kg4 dxe4 $11 {[%mdl 4096] Endgame KRB-KRB} 33. b4 Bb6 {[#]} (33... Bf8 $11) 34. Kf5 $1 $18 {[%mdl 1024] White has strong compensation.} e3 $2 {[#]} (34... Ra2) 35. Rg1+ $2 (35. Ke6 $1 $18 {Rg1+ would kill now.} h5 36. Rg1+ Kh7 37. Rg7+ Kh6 38. Rg8) 35... Kf7 $11 36. Rg7+ Kf8 {Hoping for ...e2.} 37. Ke6 Rh2 $1 38. Rf7+ {The position is equal.} Ke8 {aiming for ...e2.} 39. Rg7 {[%cal Rg7g8]} Kf8 {Strongly threatening ...e2.} 40. Rf7+ Ke8 {White must now prevent ...e2.} 41. Rg7 {Accuracy: White = 90%, Black = 81%.} 1/2-1/2

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.23"]
[Round "2.1"]
[White "Heberla, Bartlomiej"]
[Black "Teclaf, Pawel"]
[Result "1-0"]
[ECO "A50"]
[WhiteElo "2527"]
[BlackElo "2360"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,71,57,56,59,63,54,65,72,43,80,87,83,75,174,179,176,172,312,292,292,271,260,165,157,163,147,110,101,96,163,156,241,224,219,228,243,241,357,357,365,364,353,358,337,310,704,704,666,596,638,645,762,715,29995,2456,2108,1990,1006,927,29965,29972]} 1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Nf3 e6 5. a3 g6 6. Qc2 Bxf3 7. exf3 Nc6 {E12: Queen's Indian: Unusual White 4th moves, 4 a3, 4 Nc3 Bb7 5 a3 and 4 Nc3 Bb7 .} 8. Be3 Bg7 9. O-O-O Ne7 {White is slightly better.} 10. g4 d5 11. h4 dxc4 {[#]} 12. Bxc4 $146 ({Predecessor:} 12. h5 Nfd5 13. Bxc4 Nxc3 14. Qxc3 c6 15. h6 Bf6 16. g5 Nd5 17. Bxd5 cxd5 18. Qc6+ {1-0 (42) Moiseenko,A (2642)-Rozentalis,E (2540) Netanya 2019}) 12... h5 {[#]} (12... Qd7 $16) 13. d5 $1 $18 {[%cal Rd5e6][%mdl 64] Decoy} Nfxd5 14. Nxd5 Nxd5 (14... exd5 $142 15. Bxd5 Nxd5 16. Qc6+ Kf8) 15. Bxd5 exd5 16. Qc6+ Kf8 17. Bg5 (17. Rxd5 Qe8 $14) (17. Qxd5 Qxd5 18. Rxd5 Re8 $11) 17... Qe8 18. Qxd5 c6 19. Qd6+ Kg8 20. Rhe1 $36 {[%mdl 2048] White is on the roll.} Qf8 (20... Qb8 $16) 21. Re7 hxg4 (21... c5 $16 {was necessary.} 22. Kb1 Rh7) 22. fxg4 Bh6 23. Rde1 Rd8 24. Qf6 (24. Qxc6 Bxg5+ 25. hxg5 Rc8 $16) 24... Rh7 (24... Rc8 {keeps fighting.} 25. Rxa7 Bxg5+ 26. hxg5 (26. Qxg5 Qh6 $16) 26... Rh3) 25. Bxh6 (25. Qxc6 Rc8 $14) 25... Qxh6+ 26. g5 Qf8 27. Kb1 ({And not} 27. Qxc6 Rc8 $11) ({Weaker is} 27. Rxa7 Rd6 $16) 27... Rc8 28. R1e4 ({Less strong is} 28. Rxa7 Rxh4 29. Ree7 Rh7 $16) 28... Rg7 $2 (28... b5 29. Rxa7 Qd8 30. Qxd8+ Rxd8) 29. f4 c5 30. Rd7 c4 31. Red4 Qc5 32. h5 {[#] Hoping for h6.} Rc6 33. Qd8+ (33. Rd8+ $142 Qf8 34. Rxf8+ Kh7 35. Rdd8 Rg8 36. Rxf7+ {[%mdl 64] Double Attack} Rg7 37. Rxg7#) 33... Kh7 34. hxg6+ Rcxg6 35. R7d5 Qc6 36. f5 {Accuracy: White = 75%, Black = 44%.} 1-0

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.23"]
[Round "2.1"]
[White "Gajewski, Grzegorz"]
[Black "Dziuba, Marcin"]
[Result "1/2-1/2"]
[ECO "D20"]
[WhiteElo "2515"]
[BlackElo "2486"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,81,29,21,23,29,31,37,44,37,33,44,51,41,56,47,26,26,29,27,17,48,56,49,50,53,45,46,27,51,35,19,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 dxc4 3. e4 e5 4. Nf3 exd4 5. Bxc4 Nc6 6. O-O Be6 7. Bb5 Bc5 8. b4 {D20: Queen's Gambit Accepted: 3 e3 and 3 e4.} Bb6 $1 9. a4 {Hoping for a5.} a6 10. Bxc6+ $1 {White is slightly better.} bxc6 11. Nbd2 Nf6 12. Ne5 Qd6 13. Nd3 {And now e5 would win.} Nd7 14. f4 {Black must now prevent a5.} f5 15. exf5 Bxf5 16. Re1+ {[#]} Kd8 $146 ({Predecessor:} 16... Kf8 17. Nc4 Qd5 18. Nxb6 cxb6 19. Bb2 h5 20. a5 b5 21. Qd2 Rh6 22. Rad1 Rd6 {½-½ (37) Mikhalchuk,V (2464)-Dobrica,D (2401) ICCF email 2017}) 17. Nc4 Qd5 18. Nxb6 cxb6 19. a5 b5 20. Bb2 Re8 21. Rxe8+ Kxe8 22. Qh5+ {The position is equal.} Kf8 {[#]} 23. Ne5 $1 {[%mdl 512]} Be4 (23... Nxe5 24. Qxf5+) 24. Nxd7+ Qxd7 25. Re1 Bf5 26. g4 Bxg4 27. Qxh7 {aiming for Qh8+.} Re8 28. Qh8+ {[#]} Kf7 $1 29. Qxe8+ Qxe8 30. Rxe8 Kxe8 31. Bxd4 $11 {[%mdl 4096] Endgame KB-KB} g6 32. Kf2 Kf7 33. Kg3 Bf5 34. Kh4 Ke6 35. Kg5 Bb1 36. Bc5 Be4 37. Kh6 Kf7 38. h4 Bb1 39. Bd4 Be4 40. Kg5 Ke6 41. Bc5 {Accuracy: White = 100%, Black = 96%.} 1/2-1/2

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.24"]
[Round "2.2"]
[White "Krasenkow, Michal"]
[Black "Piorun, Kacper"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2521"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "178"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,178,17,17,17,20,20,20,20,20,15,12,16,17,28,0,0,0,4,0,16,0,-7,-15,-16,-29,-8,-21,-14,-39,-21,-47,-5,-14,0,-11,0,-7,0,-4,0,0,18,17,16,12,41,29,13,0,0,0,0,-74,-69,-122,-86,-127,-120,-104,-110,-92,-79,-78,-73,-56,-52,-62,-65,-72,-31,-31,0,0,0,-10,-9,-13,-13,-28,-28,-28,-28,-59,-60,-170,-172,-210,-214,-223,-182,-1279,-1270,-1249,-1273,-1106,-1075,-916,-916,-1871,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-416,-28,-28,-28,-28,-28,-28,-28,-28,-28,-28,-28,-28,-28,-28,-28,-28,-28,-28,-28,-28,8,8,8]} 1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. d4 Bb4 5. Bg5 h6 6. Bxf6 Qxf6 7. Qa4+ Nc6 8. e3 O-O {D38: Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} 9. Rc1 Qg6 10. Qc2 Qxc2 11. Rxc2 Rd8 12. a3 Bf8 13. Nb5 Rd7 14. cxd5 exd5 15. Bd3 a6 16. Nc3 Rd8 17. Na4 Bd6 {[#]} 18. h3 $146 ({Predecessor:} 18. Ke2 g5 19. h3 Re8 20. b4 f5 21. Kd2 f4 22. Nc5 fxe3+ 23. fxe3 Ne7 24. e4 {½-½ (57) Asgharzadeh,M (2257)-Asgarizadeh,A (2416) Hamedan 2018}) 18... Ne7 19. g4 g6 20. Ne5 Kg7 21. Be2 Rb8 22. b4 f6 23. Nd3 Kf7 24. Bf3 Rh8 25. Nc3 c6 26. Kd2 Be6 27. a4 Nc8 {[%cal Be7c8,Bc8b6,Bb6d7][%mdl 32]} 28. Nc5 Nb6 29. Be2 Ke7 30. Ra1 Bf7 31. b5 (31. a5 {is interesting.} Nd7 32. h4 Rhg8 33. Rg1 f5 34. gxf5 gxf5 35. Rxg8 Bxg8 36. Rc1) 31... Bxc5 32. dxc5 Nd7 33. bxc6 (33. Rb1 $11 {keeps the balance.}) 33... bxc6 $17 34. Bxa6 (34. a5 $15) 34... Nxc5 {Strongly threatening ...Nb3+.} 35. Nxd5+ Kd6 36. Rxc5 Kxc5 37. Nxf6 {Hoping for Nd7+.} Rhd8+ 38. Ke1 Rb4 {[%mdl 1024] Black has strong compensation.} 39. a5 Kd6 40. f3 Kc7 41. Ne4 Rb2 42. Be2 Ra2 43. Rxa2 Bxa2 $11 {[%mdl 4096] Endgame KRB-KBN} 44. Nc3 Be6 45. h4 c5 46. f4 Ra8 47. a6 c4 48. e4 Rxa6 49. Kd2 ({White must play} 49. f5 $15 Bg8 50. Bf3) 49... Kd6 $19 50. e5+ Kc5 51. Bf3 Ra3 {aiming for ...Kb4.} 52. Kc2 $2 (52. Be4) 52... Kb4 53. Nd5+ {[#]} Bxd5 $1 54. Bxd5 {KR-KB} Rc3+ 55. Kb2 Re3 56. Bf7 {[#]} c3+ (56... g5 $142 $1 {[%mdl 512]} 57. fxg5 hxg5 58. hxg5 Rxe5) 57. Kc2 Re2+ 58. Kc1 {[#]} g5 $1 {[%mdl 512]} 59. hxg5 (59. fxg5 Re1+) 59... hxg5 60. fxg5 Rxe5 61. Bg6 {Now Bf5 and White clings on.} Rxg5 62. Bf5 Rg8 63. Kc2 Rd8 64. Bh7 Rd2+ 65. Kc1 Rg2 66. Bf5 Kc4 67. Kb1 Re2 {( -> ...Kb3)} 68. Bh7 Re8 69. Kc2 Rh8 70. Bf5 Rh2+ 71. Kc1 Kd4 72. Kd1 Rg2 73. Kc1 Ke3 74. Kd1 Ra2 75. Kc1 Kd4 76. Bh7 Re2 77. Bf5 Rg2 78. Kd1 c2+ $2 (78... Kc4 $19 {...Kb3 is the strong threat.} 79. Kc1 Kb4) 79. Bxc2 $11 Rxg4 80. Bf5 Rg5 81. Bh7 Ke3 82. Kc2 Rc5+ (82... Rg7 $5 83. Bf5 $8 Rc7+ 84. Kb3 Kd4 $11) 83. Kb3 Kd4 84. Bg6 Rc7 85. Bf5 Rg7 86. Kc2 Rg5 87. Bh7 Rg2+ 88. Kb3 Rc2 89. Kxc2 Ke5 {And White is the lucky defender. Accuracy: White = 84%, Black = 88%.} 1/2-1/2

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.24"]
[Round "2.2"]
[White "Dziuba, Marcin"]
[Black "Gajewski, Grzegorz"]
[Result "1/2-1/2"]
[ECO "E46"]
[WhiteElo "2486"]
[BlackElo "2515"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,110,0,0,19,22,18,14,39,35,26,17,25,24,13,0,0,-41,-49,-83,14,-64,0,0,6,0,0,0,0,0,0,0,0,0,0,0,45,39,39,39,42,42,43,43,31,35,38,39,39,39,39,39,41,31,33,33,43,43,50,22,22,23,27,22,46,29,22,12,26,0,30,6,6,6,6,6,6,0,8,5,5,5,10,10,10,10,10,10,11,11,11,11,11,11,12,12,127]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd2 d5 6. Nf3 b6 7. cxd5 exd5 8. Bd3 Bb7 9. O-O Re8 {E52: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5 6 Bd3 b6.} 10. Ne5 Nbd7 11. f4 Bxc3 12. Bxc3 {[#]} Ne4 $146 ({Predecessor:} 12... a6 13. Rc1 c5 14. Be1 Ne4 15. Qh5 Rf8 16. Nxd7 Qxd7 17. Bxe4 dxe4 18. dxc5 bxc5 19. Rxc5 Rac8 20. Rxc8 Rxc8 21. Bc3 Kh8 22. Rd1 Qe7 23. Qg4 Qf8 24. Rd7 Ba8 {1-0 (24) Abeln,M (2288)-Strasser,J (1984) Bad Wiessee 2003}) 13. Qh5 Qe7 14. Bxe4 dxe4 15. Nxd7 Qxd7 16. d5 f6 17. d6 Qf7 (17... Qxd6 $17 18. Rfd1 Qe6) 18. Qh4 (18. Qxf7+ $11 Kxf7 19. dxc7 (19. d7 Red8 $17)) 18... Rad8 ({Black should play} 18... cxd6 $15 19. a4 Rac8) 19. dxc7 $11 Qxc7 20. Rac1 {[#] Bxf6 is the strong threat.} Qf7 21. g4 Ba6 22. Rf2 Rd3 23. Qg3 Red8 24. f5 h6 25. h4 Qd5 ({Reject} 25... Qxa2 $6 26. g5 $16) 26. g5 Rd1+ 27. Rxd1 Qxd1+ 28. Kg2 Be2 $1 ({Don't blunder} 28... fxg5 $2 29. hxg5 h5 30. f6 $18) 29. gxf6 {[%csl Gc3,Gf6][%cal Rg3g7]} Bf3+ $1 30. Kh3 $1 {[%csl Gc3,Gf6][%cal Rg3g7]} Qh1+ 31. Qh2 Qxh2+ 32. Kxh2 gxf6 33. Bxf6 $14 {[%mdl 4096] Endgame KRB-KRB} Rf8 34. Bd4 Rxf5 35. Rc2 Rf7 36. Rc6 Kh7 37. Be5 h5 38. Kg3 Bg4 39. Bf4 Rd7 40. a4 Bd1 41. Rc4 Bf3 42. Rc6 Bd1 43. b4 Rg7+ {The position is equal.} 44. Kf2 Rg6 45. Rc7+ Rg7 46. Rc6 Rg6 47. Rc4 Bxa4 48. Rxe4 Rg2+ 49. Kxg2 Bc6 50. Kf3 Kg6 $1 51. b5 Bd5 52. Bb8 {aiming for Kf4.} Kf5 {[%mdl 64] [#] Pin} 53. Bxa7 Bxe4+ 54. Ke2 Bc2 55. Bxb6 Ke5 {Accuracy: White = 88%, Black = 85%.} (55... Ke4 $11) 1/2-1/2

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.24"]
[Round "2.2"]
[White "Sadzikowski, Daniel"]
[Black "Tomczak, Jacek"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2374"]
[BlackElo "2563"]
[Annotator "TA"]
[PlyCount "138"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,138,35,32,26,32,38,62,31,31,28,31,31,25,24,38,15,0,3,11,0,0,0,0,0,0,0,0,0,31,-8,0,0,-7,-20,-10,-26,14,7,22,0,0,0,0,0,0,0,0,-12,-5,-8,-6,-63,-51,-92,-91,-97,-100,-93,-93,-93,-100,-88,-91,-90,0,-93,-105,-109,-137,-135,-131,-316,-51,-54,-19,-84,-75,-70,-62,-95,-59,-67,-9,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nc3 a6 3. Nge2 b5 4. d4 cxd4 5. Nxd4 Bb7 6. Bg5 {B28: Sicilian: 2 Nf3 a6 (O'Kelly Variation).} h6 7. Bh4 {[#]} Qb6 $146 ({Predecessor:} 7... Nc6 8. a4 b4 9. Nd5 Nf6 10. Bxf6 gxf6 11. Nxc6 Bxc6 12. Qd4 Bxd5 13. exd5 e5 {0-1 (44) Escobar Forero,A (2487)-Palit,S (2393) Barbera del Valles 2012}) 8. Nd5 {White is slightly better.} Bxd5 $1 9. exd5 {next a4 is good for White.} g5 10. Bg3 Bg7 $1 11. c3 {Black must now prevent Nf5.} Bxd4 $1 12. Qxd4 (12. cxd4 {looks sharper.} d6 13. a4 Qa5+ 14. Qd2 Qxd2+ 15. Kxd2 bxa4 16. h4) 12... Qxd4 13. cxd4 d6 $1 14. a4 bxa4 $1 15. h4 g4 $1 16. Rxa4 Nf6 17. Bb5+ {[%mdl 64] Pin} Kf8 18. O-O Kg7 19. Rc1 (19. Re1 $5 {[%cal Re1e7]} Nxd5 20. Bc4 $14) 19... Ra7 20. Be2 Rb7 21. Rc2 h5 22. f3 gxf3 23. Bxf3 Rb5 24. Be1 (24. Re2 {with more complications.} Nxd5 25. Bxd5 Rxd5 26. Rxe7 Rc8 27. Kh2) 24... Nxd5 25. Ra5 Rxa5 26. Bxa5 e6 27. Kf2 Kf6 28. Bxd5 exd5 $11 {[%mdl 4096] Endgame KRB-KRN} 29. Rc7 Ke6 30. b4 (30. Rc3 $11) 30... Rg8 31. Kf3 Nd7 32. Rc6 Nf6 $1 33. Rxa6 {Threatening b5.} Ne4 34. b5 Rg3+ 35. Kf4 Rxg2 36. b6 Rf2+ 37. Ke3 {Hoping for b7.} Rb2 38. Ra7 {[#]} Rb3+ $1 39. Kf4 f6 {( -> ...Nf2)} 40. Rc7 $2 {[#]} (40. Ra8 $17) 40... Nf2 $2 (40... Ng3 $1 $19 {[%cal Rg3e2]} 41. Rc2 Nf5) 41. Rc3 $15 Rb5 42. Re3+ (42. Rc8 $1 $11 {keeps the balance.}) 42... Ne4 43. Ra3 Rb2 44. Ra4 f5 45. Ke3 {Black should prevent Rb4.} Rb3+ ({Black should play} 45... Nf2 $1 $15) 46. Kf4 $11 {The position is equal.} Nf2 {[%cal Rf2h3]} 47. Kg5 Nd3 {Threatens to win with ...f4.} 48. Ra1 f4 49. Rf1 {And now Rf3 would win.} Rb5 50. Bd2 Rb2 51. Bxf4 Nxf4 52. Rxf4 Rxb6 53. Kxh5 {KR-KR} Rb8 54. Kg6 Rg8+ 55. Kh7 Rg1 56. h5 Rg2 57. h6 Rg1 58. Kh8 Rg5 59. Rf8 {Rg8 is the strong threat.} Rg6 60. h7 {aiming for Rg8.} Rg4 61. Rg8 Rxd4 62. Kg7 Rh4 63. h8=Q (63. Re8+ {is interesting.} Kf5 64. Rf8+ Ke4 65. Rf6 Rxh7+ 66. Kxh7 d4 67. Re6+) 63... Rxh8 64. Rxh8 {KR-KPP} (64. Kxh8 {seems wilder.} Ke5 65. Re8+ Kf4 66. Rb8 Ke4 67. Rb1) 64... Kf5 65. Kh6 d4 66. Rf8+ Ke4 67. Re8+ (67. Kg5 $5 {[%cal Rg5g4]} d3 68. Kh5 $11) 67... Kf3 68. Rd8 d3 69. Rxd6 Ke2 {Accuracy: White = 83%, Black = 85%.} 1/2-1/2

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.24"]
[Round "2.2"]
[White "Teclaf, Pawel"]
[Black "Heberla, Bartlomiej"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2360"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "156"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,156,16,30,42,35,24,25,47,30,14,18,26,38,58,53,42,44,59,39,42,39,50,45,52,27,37,0,26,0,25,15,22,13,18,6,0,0,0,0,6,0,0,0,42,38,121,114,119,114,116,116,161,103,99,92,114,102,122,127,114,114,106,107,116,74,85,45,116,85,85,69,85,0,66,6,69,30,30,25,26,27,49,49,62,50,51,51,61,61,64,64,63,66,65,57,57,57,57,57,59,59,60,57,59,59,81,0,60,68,54,62,68,68,64,42,317,317,29958,29957,12850,29942,12352,1768,639,0,9254,239,239,239,242,0,0,0,0,0,0,0,0]} 1. Nf3 d5 2. e3 Nf6 3. c4 e6 4. Nc3 c5 5. cxd5 exd5 6. d4 Nc6 7. Bb5 Bd6 8. dxc5 Bxc5 9. O-O O-O 10. b3 Bg4 11. Bb2 Bd6 {D32: Tarrasch Defence: Sidelines and lines without g3.} 12. Rc1 Rc8 13. Be2 Bb8 {White has an edge.} 14. Nd4 Qd6 {[%csl Gb8][%cal Rd6h2]} 15. g3 Bh3 16. Re1 {[#]} Qe7 $146 ({Predecessor:} 16... Rfd8 17. Nxc6 bxc6 18. Na4 Bc7 19. Qd4 Ba5 20. Red1 Qe7 21. a3 Rd6 22. b4 Bd8 {½-½ (35) Matlakov,M (2683)-Jakovenko,D (2752) Porto Carras 2018}) 17. Nxc6 bxc6 18. Qd4 Bd6 19. Bf3 Ba3 20. Na4 Bxb2 21. Qxb2 c5 22. Qc2 {[%cal Ra4c5]} c4 23. Qb2 cxb3 (23... Rfd8 {is more complex.} 24. Red1 Bg4 25. Be2 Bxe2 26. Qxe2 cxb3 27. Rxc8 Rxc8 28. axb3 Qe4) 24. Qxb3 (24. Nc3 {with more complications.} Qd7 25. Qxb3 Be6 26. Red1 d4 27. Qb1) 24... Be6 25. Nc3 {[%cal Rc3d5]} Rfd8 26. Qb2 Rb8 27. Qe2 d4 28. exd4 Rxd4 29. Nb5 Rd7 30. Bc6 Rdd8 31. Qe3 Qb4 32. Nc7 $36 {[%mdl 2048] White fights for an advantage.} ({Of course not} 32. Nxa7 Ng4 $15) 32... Qb6 (32... Bc4 $1 $14) 33. Nxe6 $16 Qxe3 34. Rxe3 fxe6 35. Rxe6 Rb2 36. Re7 (36. Ba4 $1 $18) 36... Rxa2 37. Bf3 {And now Rcc7 would win.} Ra3 38. Kg2 {aiming for Rcc7.} Kh8 39. Rcc7 Rg8 40. Rxa7 Rxa7 41. Rxa7 {[%mdl 4096] Endgame KRB-KRN} Rd8 42. g4 g5 43. h4 h6 (43... gxh4 $14 44. Rf7 Nd7) 44. Rf7 Rd6 45. Be2 Nd5 46. Bf3 (46. h5 $16) 46... Nf4+ ({Better is} 46... Nf6 $11) 47. Kh2 ({White should try} 47. Kg3 $14) 47... Rd2 (47... Kg8 $11 48. Rf5 Rd3) 48. hxg5 hxg5 49. Rf5 Rxf2+ 50. Kg3 Rb2 51. Rxg5 Ne6 52. Re5 Nf8 53. Be4 Kg7 54. g5 Kf7 55. Rf5+ Kg7 56. Ra5 Ne6 57. Ra7+ Kf8 58. g6 {Strongly threatening Rf7+.} Rb5 59. Rf7+ Kg8 60. Re7 Ng7 61. Kg4 Nh5 62. Bf5 {Intending Be6+ and mate.} Ng7 63. Be4 Nh5 $1 64. Rf7 Rb4 65. Kf3 {Hoping for Bd5.} Rb3+ 66. Kf2 $1 Rb8 67. Bf3 Ng7 $2 {[%mdl 8192]} (67... Rb5 $14) 68. Bd5 $18 {White wants to mate with Rb7+.} Kh8 $2 (68... Rb5 $18 69. Bc4 (69. Rf5+ Rxd5 70. Rxd5 Ne6 $14) 69... Rc5 70. Rf4+ Rxc4 71. Rxc4 Ne6) 69. Kf3 Rd8 70. Kg4 Re8 71. Rf6 (71. Ra7 $142 Re1 72. Kf3) 71... Rd8 72. Rf7 (72. Bb3 $142 Rb8 73. Bd5) 72... Re8 $1 73. Rf1 $2 (73. Ra7 Re5 74. Ra8+ Re8 75. Ra1) 73... Ne6 {[#]} 74. Kh5 $1 {Threatening mate with Rf7.} Rf8 {[#] Threatens to win with ...Ng7+.} 75. Rh1 $2 (75. Rf7 $1 $18 {[%cal Rf7h7]} Rxf7 76. gxf7) 75... Kg7 $11 {The position is equal.} 76. Kg4 Rf4+ 77. Kg3 Rf6 $1 78. Be4 Nf8 {Accuracy: White = 75%, Black = 74%.} 1/2-1/2

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.24"]
[Round "2.3"]
[White "Tomczak, Jacek"]
[Black "Sadzikowski, Daniel"]
[Result "0-1"]
[ECO "C55"]
[WhiteElo "2563"]
[BlackElo "2374"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,88,0,15,6,8,7,2,-5,0,-21,0,-3,0,-20,24,0,25,0,0,0,8,4,55,58,49,43,93,0,160,153,150,146,156,133,153,153,146,139,159,99,112,76,79,72,125,107,177,168,168,140,135,136,135,137,130,-157,-152,-157,-87,-455,-425,-435,-439,-438,-431,-390,-371,-12845,-12845,-29996,-29997,-29997,-29998,-29998,-29999]} 1. e4 e5 2. Bc4 Nf6 3. d4 exd4 4. Nf3 Nc6 5. e5 d5 6. Bb5 Nd7 7. O-O Be7 8. Bxc6 bxc6 9. Nxd4 {C56: Two Knights: 4 d4 exd4 5 0-0 Nxe4.} Nb8 10. Qf3 O-O 11. Nc3 {The position is equal.} Re8 12. Bf4 Bd7 {[#]} 13. Rfe1 $146 ({Predecessor:} 13. h3 Na6 14. Nb3 Nc5 15. Nxc5 Bxc5 16. Rad1 Bb6 17. Na4 Bf5 18. Rd2 Qe7 19. b3 {0-1 (28) Heilmann,M (2497)-Barbalic,Z (1977) ICCF email 2017}) 13... Na6 14. Rad1 Nc5 15. Bc1 Qc8 16. h3 a5 17. Qg3 Bf8 (17... a4 {keeps more tension.} 18. f4 Nb7 19. Nf3 Bb4 20. Bd2 Ba5) 18. f4 Ra6 (18... a4 $11) 19. Qf3 $14 Ne6 {With the idea ...Nxd4.} 20. Nde2 Nc5 21. g4 {[#]} (21. Ng3 $16) 21... Ne4 $2 (21... h5 $1 $11 {[%mdl 512]}) 22. Nxe4 $16 dxe4 23. Qxe4 c5 24. f5 Bd6 25. Bf4 Bc6 26. Qe3 Rb6 27. Qg3 (27. Ng3 $142) 27... Bf8 28. b3 c4 29. Nd4 Bc5 (29... Bd5 $142) 30. Kh2 ({Reject} 30. bxc4 $6 Rb2 $11) 30... Ba8 (30... cxb3 $16 31. cxb3 (31. axb3 Ba8 $16) 31... Bd7) 31. e6 $18 {Strongly threatening exf7+.} ({Much less strong is} 31. bxc4 $6 Rb2 $16) 31... Bxd4 32. exf7+ Kxf7 {...c5 is the strong threat.} 33. Rxd4 cxb3 34. axb3 {And now Rxe8 would win.} Rb4 35. Be5 $2 {[%mdl 8192]} (35. c4 $16 {keeps the pressure on.}) 35... Rxd4 $1 $17 36. Bxd4 {[#] Threatens to win with Rxe8.} Qb7 $1 $40 {[%mdl 128] ( -> ...Re2+!). Black attacks with force.} 37. Rd1 $2 {[%mdl 8192] [#] White does not recover from this.} (37. Rg1 $17) 37... Rd8 $1 $19 {[%cal Rd8d4] White must now prevent ...Rxd4!} 38. Qf2 {[#]} c5 $1 {[%mdl 512]} 39. f6 (39. Bxc5 Rxd1) 39... cxd4 40. fxg7+ Kxg7 41. Rxd4 $2 (41. Kg3) 41... Rf8 42. Qd2 Qh1+ {Black mates.} 43. Kg3 Rf3+ 44. Kh4 Qxh3+ {Accuracy: White = 59%, Black = 81%.} 0-1

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.24"]
[Round "2.3"]
[White "Piorun, Kacper"]
[Black "Krasenkow, Michal"]
[Result "1-0"]
[ECO "C28"]
[WhiteElo "2539"]
[BlackElo "2521"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,75,0,5,0,64,64,64,68,58,55,60,63,62,61,79,82,88,68,62,66,121,119,119,113,119,121,112,108,113,107,118,116,159,154,166,100,137,146,158,150,172,171,193,185,176,178,186,177,182,164,1133,1112,1148,1148,1125,1129,1460,1435,1361,1283,2687,2598,2301,1537,29969,29970,29980,29965]} 1. e4 e5 2. Bc4 Nf6 3. Nc3 Nc6 4. d3 Na5 5. Qf3 Bb4 6. Nge2 {C28: Vienna Game: 2...Nf6 3 Bc4 Nc6.} c6 (6... Nxc4 $11 7. dxc4 d6) 7. a3 $14 Bxc3+ 8. Nxc3 {White is slightly better.} Nxc4 9. dxc4 d6 10. b3 Be6 {[#]} 11. a4 $146 ({Predecessor:} 11. O-O Qe7 12. a4 Nd7 13. Ba3 a5 14. Qg3 f6 15. f4 Nc5 16. Rad1 Rd8 17. Bxc5 exf4 18. Qxf4 dxc5 19. Rxd8+ Qxd8 {1-0 (34) Sanchez,S (2385)-Romero Barreto,J (2217) Ocana 2017}) 11... O-O 12. Bg5 h6 13. Bh4 g5 14. Bg3 Ne8 (14... Kh7 $14) 15. O-O-O $16 Qe7 16. h4 g4 17. Qe3 Kh7 18. f4 gxf3 19. gxf3 (19. Qxf3 $6 Nf6 $11) 19... Rg8 20. f4 Nf6 21. f5 ({Of course not} 21. fxe5 $6 Ng4 $11) 21... Bd7 22. Rd3 (22. Kb2 $18) 22... Rg4 23. Rhd1 Rag8 {[#]} 24. Be1 $1 ({Wrong is} 24. Rxd6 $2 Rxg3 25. Qe1 Be8 $19) 24... d5 25. cxd5 cxd5 26. Nxd5 Nxd5 ({But not} 26... Qa3+ $2 {[#]} 27. Kb1 $1 $18 {[%mdl 512]}) 27. Rxd5 Bc6 28. Rd6 $40 {[%csl Gd6][%cal Re3h6][%mdl 128] Black is in trouble.} f6 29. Qxa7 {Rxc6! is the strong threat.} Qg7 $2 {[#]} (29... R8g7) 30. Rxc6 $1 $18 bxc6 31. Rd7 Rxe4 32. Bd2 Rd4 33. Rxg7+ Rxg7 34. Qb6 Rxh4 35. Qxc6 Rh2 36. Bb4 h5 37. Qxf6 h4 38. Bc3 {Accuracy: White = 94%, Black = 59%.} 1-0

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.24"]
[Round "2.3"]
[White "Dziuba, Marcin"]
[Black "Gajewski, Grzegorz"]
[Result "0-1"]
[ECO "E46"]
[WhiteElo "2486"]
[BlackElo "2515"]
[Annotator "TA"]
[PlyCount "112"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,112,-4,-3,9,0,1,9,17,19,0,0,0,0,0,0,-6,-1,-8,-25,-18,-25,0,-3,18,6,2,16,45,10,62,58,68,48,98,79,529,538,1716,57,27,-132,0,-127,-130,-131,-123,-135,-141,-139,-122,-160,-167,-230,-150,-263,-168,-300,-295,-273,-230,-310,-310,-325,-316,-330,-320,-308,-320,-308,-313,-302,-275,-335,-339,-338,-336,-336,-331,-352,-325,-356,-347,-345,-297,-297,0,-319,-226,-312,-279,-367,-370,-417,-400,-591,-587,-572,-562,-1426,-1397,-1671,-1596,-1546,-1526]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd2 d5 6. Nf3 Re8 {E51: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5.} 7. Bd3 c5 8. O-O cxd4 {The position is equal.} 9. exd4 dxc4 10. Bxc4 {[#]} a6 $146 ({Predecessor:} 10... Nbd7 11. Qb3 Bd6 12. Rfe1 Nb6 13. Bb5 Bd7 14. a4 Bc6 15. Bxc6 bxc6 16. Bg5 Rb8 {0-1 (50) Zhai,M (2355)-Zhao,X (2510) Wuxi 2016}) 11. a3 Be7 12. Rc1 b5 13. Ba2 Bb7 14. Bg5 Nbd7 15. Re1 Nb6 16. Ne5 Nfd5 17. Bxe7 Qxe7 18. Ne4 Rad8 19. Qd2 h6 ({Black should try} 19... Nd7 $11) 20. Nc5 $14 Rc8 21. Bb1 Nf6 22. Rc3 Red8 $2 {[%mdl 8192]} (22... Nc4 $16 {is more resistant.} 23. Nxc4 bxc4) 23. Rg3 $18 {[#] Strongly threatening Qxh6.} Nh5 24. Qc2 $2 (24. Qxh6 $18 {White wants to mate with Qh7+.} Qf6 25. Qxh5 Rxc5 26. dxc5) 24... f5 $14 25. Ng6 $2 ({Better is} 25. Rc3 $11 Nf4 26. Ba2) 25... Qf7 (25... Qf6 $17 26. Rc3 Rxc5 27. dxc5 Qxg6) 26. Rc3 (26. Ba2 $11 {keeps the balance.} Be4 27. Bxe6 Qxe6 28. Nxe6 Rxc2 29. Nxd8 Nxg3 30. hxg3) 26... Rxc5 $1 $17 (26... Qxg6 27. Nxb7 Rxc3 28. Qxc3 $16) 27. dxc5 {Ne5 is the strong threat.} Qxg6 $40 {[%csl Gb7][%cal Rg6g2][%mdl 128] Black has strong attack.} 28. c6 Bc8 29. Ba2 Nf4 {[%csl Gf4][%cal Rg6g2]} 30. Rg3 Qf6 31. c7 (31. Rc3 $142) 31... Rd6 32. h4 (32. Rc3 $17) 32... Kf8 33. Rd1 (33. Rge3 {might work better.} Nfd5 34. Bxd5 Nxd5 35. Qc5) 33... Rxd1+ $19 34. Qxd1 Nbd5 (34... Qxb2 35. Qd6+ Ke8 36. Qxf4 $18) 35. Bxd5 Nxd5 ({Weaker is} 35... exd5 36. Qd2 $17) 36. Qc2 Qxh4 37. Qc6 Qe7 38. Rd3 Qd7 39. Qc5+ Kf7 40. Rd2 Bb7 41. Rc2 {[#]} Ne7 $1 42. Kh2 Qd5 43. Qxd5 exd5 ({And not} 43... Bxd5 44. c8=Q $16) 44. Re2 Ke8 45. Kg3 Kd7 46. Kf4 Nc6 47. Rd2 Ne7 $2 ({Much less strong is} 47... Kxc7 48. Kxf5 Kd6 49. Kg6 $19) (47... Kd6 $19 {White must now prevent ...Ne7.} 48. Kxf5 Ne7+ 49. Kf4 Kxc7) 48. Rc2 $2 {[%mdl 8192]} (48. Re2 $1 $11 {and White stays safe.} Kd6 49. Kg3) 48... Bc6 49. Ke5 Kxc7 50. Ke6 Nc8 51. Kxf5 Kd6 52. Kg6 (52. Rd2 $142 Ne7+ 53. Kf4) 52... d4 {And now ...Be4+ would win.Black is clearly winning.} 53. Kxg7 Nb6 54. g4 Nc4 55. b3 d3 56. Rc3 Nb2 {What a bad dream for White. Accuracy: White = 49%, Black = 66%.} 0-1

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.24"]
[Round "2.4"]
[White "Krasenkow, Michal"]
[Black "Piorun, Kacper"]
[Result "0-1"]
[ECO "D38"]
[WhiteElo "2521"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,78,16,14,14,15,15,15,7,7,7,14,-6,33,17,38,0,0,-21,-8,0,6,10,0,0,0,0,10,-25,-17,-41,-27,-83,-96,-98,-87,-85,-102,-91,-99,-105,-58,-69,-51,-114,-28,-80,-64,-92,-56,-58,-53,-54,-49,-275,-272,-287,-133,-291,-286,-437,-319,-292,-306,-309,-258,-408,-398,-515,-515]} 1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. d4 Bb4 5. Qa4+ Nc6 6. e3 O-O 7. Qc2 {is now more promising than 7.Bd2. Played by Magnus Carlsen in July 2020. D38: Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} Re8 8. Bd2 Bf8 9. Be2 {The position is equal.} Nb4 10. Qb1 c5 11. a3 Nc6 12. dxc5 Bxc5 {[#]} 13. b4 $146 ({Predecessor:} 13. O-O dxc4 14. Bxc4 b6 15. Ne4 Nxe4 16. Qxe4 Bb7 17. Bc3 Bf8 18. Rfd1 Qe7 19. Bd3 {½-½ (32) Postny,E (2652)-Gajewski,G (2643) Germany 2014}) 13... Bd6 14. O-O a6 15. Rd1 $1 Qe7 16. Be1 {[%cal Rc4d5]} dxc4 17. Bxc4 b5 18. Be2 Bb7 19. Ra2 Ne5 20. Nxe5 Bxe5 21. f4 (21. Rc2 $11) 21... Bc7 22. Bh4 Bb6 23. Qc1 Qc7 {And now ...Rac8 would win.} 24. Bxf6 gxf6 25. Kh1 Red8 (25... f5 {with more complications.} 26. Rc2 Rac8 27. Bd3 Qe7 28. Be2 Rcd8) 26. Rc2 Rxd1+ 27. Qxd1 ({Better is} 27. Nxd1 $15 Qe7 28. Bf3) 27... Qe7 (27... Rd8 $17 28. Qe1 Kf8) 28. Qe1 (28. Rd2 $11 {keeps the balance.} Qc7 29. Rd3) 28... f5 $36 {[%mdl 2048] Black has some pressure.} 29. Bf3 Bxf3 30. gxf3 Rd8 31. Rg2+ Kf8 {aiming for ...Rd3.} 32. Ne2 $2 ({But not} 32. Qg3 $2 Qf6 $19) (32. Rd2 $1 $15) 32... Qc7 $19 ({Much less strong is} 32... Bxe3 33. Qc3 $17) 33. Ng3 Qd6 (33... Qc6 $19 {has better winning chances.} 34. Rf2 Rd3) 34. Nf1 $2 {[#] This costs White the game.} (34. Re2 $17 {was called for.}) 34... Qd1 $1 {[%mdl 512]} 35. Qf2 {[#]} (35. Re2 {was the only chance.}) 35... Bxe3 $1 {[%mdl 576] Deflection} 36. Qxe3 {Strongly threatening Qc5+.} Qxf1+ 37. Rg1 Qd3 38. Qf2 (38. Qc5+ $142 Qd6 39. Qc1) 38... Rc8 39. h4 Rc3 {Accuracy: White = 61%, Black = 71%.} 0-1

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.24"]
[Round "2.4"]
[White "Gajewski, Grzegorz"]
[Black "Dziuba, Marcin"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2515"]
[BlackElo "2486"]
[Annotator "TA"]
[PlyCount "43"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,43,28,10,25,18,18,20,31,25,46,42,56,60,54,-2,-14,-24,0,0,62,56,62,64,71,76,152,118,471,471,473,462,779,761,1146,1107]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. d3 Bg7 6. Nc3 Qc7 {B31: Sicilian: 2...Nc6 3 Bb5 g6.} 7. Be3 b6 8. h3 e5 {[#] The position is equal.} 9. a3 $146 ({Predecessor:} 9. O-O Nf6 10. Qd2 Nh5 11. Bh6 f6 12. Ne2 g5 13. Bxg7 Qxg7 14. Nh2 Nf4 15. Rfe1 Be6 16. Nf1 {0-1 (35) Quesada Perez,Y (2572)-Le,Q (2713) Philadelphia 2019}) 9... f5 10. exf5 gxf5 11. Qe2 Ne7 12. g4 ({White should try} 12. Bg5 $14) 12... fxg4 $11 13. Ng5 h5 14. O-O-O Ng6 (14... Nf5 $11) 15. Nce4 Qe7 16. Rdg1 Bd7 17. hxg4 h4 (17... hxg4 $142 18. Rxh8+ Bxh8) 18. Nf3 Bh6 $2 {[%mdl 8192] [#] This costs Black the game.} (18... O-O-O $16 {is a better chance.}) 19. Bxh6 $18 {White is clearly winning.} Rxh6 20. g5 Nf4 (20... Rh8 $142 21. Nf6+ Kf7) 21. Qe3 Nd5 22. gxh6 {Accuracy: White = 84%, Black = 44%.} 1-0

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.24"]
[Round "2.4"]
[White "Sadzikowski, Daniel"]
[Black "Tomczak, Jacek"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2374"]
[BlackElo "2563"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,91,20,30,21,45,28,74,64,74,32,24,37,72,51,66,68,140,33,210,43,35,19,55,58,79,71,90,86,89,38,65,46,68,36,33,0,94,20,4,0,57,19,14,0,16,0,52,35,95,91,89,86,197,66,172,162,238,47,211,0,202,0,32,0,11,-13,-16,-17,0,-22,173,-43,0,-124,-52,-37,705,711,878,586,29982,29983,29996,29997]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 a6 5. Bxd7+ Bxd7 6. dxc5 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} dxc5 7. O-O g6 {[#]} 8. Nc3 $146 {White is better.} ({Predecessor:} 8. Be3 Bc6 9. Qe2 Bxe4 10. Nc3 Bxf3 11. Qxf3 Nf6 12. Qxb7 Qc8 13. Qb3 Bg7 14. Qa4+ {1-0 (47) Karim,I (2405)-El Jawich,A (2139) Doha 2011}) 8... Bg7 9. Be3 Bxc3 10. bxc3 Qc7 11. e5 h5 12. Re1 Bc6 (12... Qc6 $14) 13. h4 (13. e6 $1 $16) 13... Qa5 $2 {[#]} (13... Kf8 $14) 14. c4 $2 (14. e6 $1 $18 {[%cal Re6f7][%mdl 512] Black must now prevent exf7+.} fxe6 15. Qd3 Bxf3 16. Qxg6+ (16. gxf3 Kf7 $14) 16... Kf8 17. gxf3) 14... Kf8 $14 15. Bg5 Kg7 16. Qd3 Rd8 17. Qe3 Qb4 18. Qf4 Re8 19. Rad1 (19. Nd2 $16) 19... Qc3 20. Re2 Qb2 21. Qe3 Qb4 22. Qf4 Qa4 (22... Qb2 $1 $11) 23. Red2 $40 {[%mdl 128] White is up to no good.} (23. e6 $1 $16 {[%csl Ge6][%cal Rf4f7]} f6 24. Ne5) 23... Qxa2 $11 24. Kh2 Qa5 (24... Qb2 $11) 25. Rd3 {[%mdl 1024] White has compensation.} (25. e6 $5 {[%cal Rf4f7]} f6 26. Ne5 $11) 25... Rh7 26. Ng1 Kh8 27. Ne2 Qc7 (27... f6 $11 28. exf6 Rf7) 28. Qg3 Nh6 ({Black should try} 28... f6 $14 29. Bf4 Qc8) 29. Bxh6 $1 $16 Rxh6 30. Nf4 Kg7 (30... Kg8 $16 {was necessary.}) 31. Qg5 (31. e6 $18 {aiming for Nxh5+!} Qe5 32. exf7 Kxf7 33. Re3) 31... b5 (31... Qc8 $14) 32. Rg3 $1 $18 Kh7 (32... Bd7 $142) 33. Nh3 $2 ({White has to play} 33. e6 $1 $18 {[%cal Re6f7]} f6 34. Qxc5 Qxf4 35. Qxc6 {[%mdl 64] Double Attack}) 33... Kg7 $2 (33... Bd7 $1 $14) 34. Nf4 Kh7 $1 35. Nh3 $2 (35. e6 $1 $18 {[%cal Re6f7]} f6 36. Qxc5 Qxf4 37. Qxc6 {[%mdl 64] Double Attack} Qxh4+ 38. Kg1 $1 {[%mdl 512]}) 35... Bd7 36. Nf4 {White wants to play Nd5.} Bf5 37. Re1 b4 38. Nd5 Qd7 39. Ra1 Be4 $2 (39... Qa7 $11) 40. Nf4 $2 (40. Rxa6 $18 {e6! is the strong threat.} Bxd5 41. cxd5 Qxd5 42. e6) 40... Qc6 ({Weaker is} 40... Bxc2 {[#]} 41. e6 $1 $18 {[%mdl 512]}) 41. Nh3 (41. Nd5 $1 $11) 41... Bf5 ({Better is} 41... Kg7 $17 42. Qd2 Rhh8) 42. Qf4 $15 {Strongly threatening Ng5+.} Kg7 $2 {[%mdl 8192]} (42... Be6 $15) 43. Qxf5 $1 $18 Rhh8 44. e6 Rhf8 45. Nf4 Kh7 {[#]} 46. Nxg6 $1 {[%mdl 64] Pin. Accuracy: White = 49%, Black = 39%.} 1-0

