[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.25"]
[Round "3.1"]
[White "Gajewski, Grzegorz"]
[Black "Piorun, Kacper"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2515"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "159"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,159,16,27,31,23,17,29,23,11,18,8,14,16,12,0,14,0,0,0,0,-3,1,0,4,9,16,0,5,0,0,0,11,0,0,-27,-35,-8,-7,-4,-5,-7,0,0,0,-7,0,0,0,0,0,0,20,8,39,37,33,0,75,74,68,52,116,80,83,72,197,195,202,131,164,166,211,205,212,194,206,186,189,154,143,163,263,263,252,110,143,110,427,270,376,175,372,348,392,401,393,389,384,373,370,369,366,0,66,0,366,344,337,312,575,573,632,631,618,620,610,601,601,594,562,529,890,906,904,872,865,846,779,335,281,109,109,0,0,0,109,0,0,0,0,0,0,0,8,8,8,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. cxd5 exd5 6. Bg5 h6 7. Bh4 Nbd7 {D38: Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} 8. e3 g5 9. Bg3 Ne4 {White has an edge.} 10. Nd2 Nxg3 11. hxg3 c6 12. Bd3 Nb6 13. Qc2 Qe7 14. O-O-O Be6 15. Kb1 O-O-O 16. a3 Bd6 17. Nb5 {[#]} Kb8 $146 ({Predecessor:} 17... Bb8 18. Nb3 Nc4 19. Nc3 Bd6 20. Nc1 Kb8 21. Bxc4 dxc4 22. N1e2 f5 23. Rd2 Qf7 {½-½ (23) Gyimesi,Z (2611)-Dizdar,G (2541) Austria 2007}) 18. Nxd6 Qxd6 19. Nb3 Nd7 {[%cal Bb6d7,Bd7f6,Bf6e4][%mdl 32]} 20. Rh2 Nf6 21. Nc5 Bc8 22. Bf5 b6 23. Nb3 Bxf5 24. Qxf5 Ne4 25. Nd2 Qf6 26. Qf3 Nxd2+ 27. Rxd2 Qg6+ 28. Ka2 Rd6 29. g4 Re8 30. Qf5 Re4 31. Re2 Qg8 32. Rh3 Qe8 33. Rf3 f6 34. Rh3 c5 (34... Rxd4 $1 $11 35. f3 Rd1) 35. dxc5 bxc5 36. Rxh6 Re5 (36... Qe6 $1 $14) 37. Qd3 d4 38. Ka1 Qa4 (38... Ree6 $16) 39. Rc2 $1 $18 Rd7 40. Rh8+ (40. Rxf6 $6 dxe3 41. Rd6 Rxd6 $16) 40... Kc7 41. e4 Kb7 42. f3 a6 43. Rc4 Qb5 44. a4 $1 {[%cal Ra4b5]} Qb6 45. Rc3 $36 {[%cal Bc4c3,Bc3b3,Bb3b6][%mdl 2080] Black is under strong pressure.} Qc6 46. Rb3+ Kc7 (46... Ka7 $142 47. Qc4 Qe6 48. Qxe6 Rxe6) 47. Qc4 $1 Qe6 48. Qxe6 (48. Qc2 $18 {Black must now prevent Rhb8.} Rd8 49. Rb7+ {[%mdl 64] Deflection} (49. Rh7+ Rd7 $16) 49... Kxb7 50. Rxd8) 48... Rxe6 {[%mdl 4096] Endgame KRR-KRR} 49. Kb1 $1 Kd6 $2 {[%mdl 8192]} (49... c4 $16 50. Rbb8 Rc6 51. Rhc8+ Kd6) 50. Rc8 Ree7 51. Rb6+ {[%mdl 64] Double Attack} Ke5 52. Kc2 (52. Rxc5+ Kf4 $14) 52... Rc7 53. Rxc7 Rxc7 54. Rxa6 {KR-KR} c4 55. g3 Rh7 56. Ra5+ $1 Ke6 57. Ra6+ $2 (57. Rd5 $18) 57... Ke5 $14 {next ...Rh2+ is good for Black.} 58. Ra5+ $2 {[%mdl 8192]} (58. Ra8 $1 $14) 58... Ke6 $18 59. Rd5 Rh2+ 60. Kb1 c3 $2 (60... d3 {keeps fighting.} 61. a5 Rh7) 61. bxc3 dxc3 62. a5 {[%cal Ba4a5,Ba5a6][%mdl 32]} Rb2+ 63. Kc1 Ra2 64. Rc5 Kd6 65. Rf5 Ke6 66. Rb5 Rf2 67. a6 Ra2 {[#]} 68. Rb6+ $1 Ke5 69. Kb1 Ra3 70. Kc2 (70. Rc6 $142 Ra5 71. Rb6 (71. Rxc3 Rxa6 72. Rd3 Ra7 $16)) 70... Kd4 {intending ...Ra2+.} 71. Rxf6 $2 (71. Rd6+ $18 {has better winning chances.} Ke5 72. Rb6) 71... Ra2+ $16 72. Kc1 Ra1+ 73. Kc2 Ra2+ {[#]} 74. Kb1 (74. Kb3 $1 $16 {[%cal Rb3a2]} c2 75. Rc6 (75. Kxa2 $2 {loses.} c1=Q $19) 75... Rxa6 76. Rc4+ (76. Rxc2 Rb6+ 77. Ka4 Rf6 $18) 76... Ke3 77. Rc3+ (77. Kxc2 Kxf3 {[%mdl 64] Double Attack} 78. e5 Ra5 $11) 77... Kf2 78. Kxc2) 74... c2+ $1 $11 {The position is equal.} 75. Kc1 {aiming for Kd2.} Kc3 {[%cal Ra2a1]} 76. Rc6+ Kd3 $1 77. a7 {[%mdl 64] Deflection} Rxa7 {...Ra1+ is the strong threat.} 78. Rxc2 {Threatens to win with e5.} Rf7 $1 79. Ra2 Rxf3 {( -> ...Rf1+)} 80. Ra5 {Blacks defense is rewarded with a draw. Accuracy: White = 79%, Black = 72%.} 1/2-1/2

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.25"]
[Round "3.1"]
[White "Sadzikowski, Daniel"]
[Black "Heberla, Bartlomiej"]
[Result "1/2-1/2"]
[ECO "A63"]
[WhiteElo "2374"]
[BlackElo "2527"]
[Annotator "ChessBase"]
[PlyCount "63"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 3. d5 {[%emt 0:00:00]} g6 {[%emt 0:00:00]} 4. Nc3 {[%emt 0:01:32]} Bg7 {[%emt 0:00:00]} 5. g3 {[%emt 0:02:19]} O-O {[%emt 0:01:09]} 6. Bg2 {[%emt 0:00:31]} e6 {[%emt 0:00:03]} 7. Nf3 {[%emt 0:00:14]} exd5 {[%emt 0:00:06]} 8. cxd5 {[%emt 0:00:04]} d6 {[%emt 0:00:03]} 9. O-O {[%emt 0:00:06]} Nbd7 {[%emt 0:00:05]} 10. Bf4 {[%emt 0:08:23]} Qe7 {[%emt 0:00:06]} 11. a4 {[%emt 0:09:15]} b6 {[%emt 0:03:54]} 12. Re1 {[%emt 0:01:55]} Ng4 {[%emt 0:00:56]} 13. Bg5 {[%emt 0:02:33]} f6 {[%emt 0:03:38]} 14. Bc1 {[%emt 0:01:07]} Nde5 {[%emt 0:11:41]} 15. h3 {[%emt 0:13:04]} Nh6 {[%emt 0:00:16]} 16. Nxe5 {[%emt 0:00:45]} fxe5 {[%emt 0:00:29]} 17. e4 {[%emt 0:00:44]} Nf7 {[%emt 0:03:46]} 18. Kh2 {[%emt 0:09:00]} h5 {[%emt 0:02:55]} 19. Qe2 {[%emt 0:01:35]} Bh6 {[%emt 0:18:50]} 20. Bxh6 {[%emt 0:05:07]} Nxh6 {[%emt 0:01:22]} 21. a5 {[%emt 0:06:47]} Bd7 {[%emt 0:01:06]} 22. Rf1 {[%emt 0:01:03]} h4 {[%emt 0:02:15]} 23. Qe3 {[%emt 0:04:32]} Kg7 {[%emt 0:09:38]} 24. axb6 {[%emt 0:06:56]} axb6 {[%emt 0:00:11]} 25. Kg1 {[%emt 0:00:26]} hxg3 {[%emt 0:14:15]} 26. fxg3 {[%emt 0:00:18]} Rxf1+ {[%emt 0:00:07]} 27. Rxf1 {[%emt 0:00:04]} b5 {[%emt 0:00:10]} 28. Rb1 {[%emt 0:04:23]} b4 {[%emt 0:03:27]} 29. Nd1 {[%emt 0:00:03]} Nf7 {[%emt 0:00:52]} 30. Qd2 {[%emt 0:03:31]} Bb5 {[%emt 0:06:47]} 31. h4 {[%emt 0:00:53]} Nh6 {[%emt 0:03:05]} 32. Ne3 {[%emt 0:00:14]} 1/2-1/2

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.26"]
[Round "3.2"]
[White "Piorun, Kacper"]
[Black "Gajewski, Grzegorz"]
[Result "1/2-1/2"]
[ECO "C80"]
[WhiteElo "2539"]
[BlackElo "2515"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,63,31,11,2,-32,-35,-31,-33,-26,-20,-46,-39,-31,-9,-52,-15,-25,0,0,18,0,4,0,0,0,0,0,0,-7,-8,-1,0,-7,-6,-7,-8,-8,0,0,0,0,0,0,0,0,0,0,3,0,13,13,20,22]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 Be7 7. Qe2 b5 {is now debated instead of 7...f5. C84: Closed Ruy Lopez: Unusual White 6th moves.} 8. d5 Nc5 {...e4 is the strong threat.} 9. dxc6 {[#] Hoping for Bb3.} Nxa4 {Black is slightly better.} 10. cxd7+ Bxd7 11. Nxe5 {And now Rd1 would win.} O-O 12. b3 Nb6 13. Bb2 Bf6 {[#]} (13... Re8 $5 {[%cal Re7d6]} 14. Nxd7 Qxd7 $15) 14. Nd2 $146 ({Predecessor:} 14. Nc3 Re8 15. f4 Bxe5 16. fxe5 Qg5 17. Qf2 Qg6 18. Ne2 Qxc2 19. Qxf7+ Kh8 20. Rab1 {1-0 (40) Milov,L (2400)-Buturin,V (2415) Alushta 1992}) 14... Bxe5 (14... Re8 $5 15. f4 $8 Be7 $11) 15. Qxe5 {[%csl Gb2][%cal Re5g7] [#]The position is equal.} f6 16. Qf4 Nd5 17. Qe4 Be8 18. Rfd1 Bg6 19. Qe6+ Bf7 20. Qc6 Qe8 21. Qc5 Qe7 22. Qxe7 Nxe7 23. Ne4 Rfd8 24. Nc5 Rxd1+ 25. Rxd1 Nd5 26. f3 a5 {[%cal Ba6a5,Ba5a4][%mdl 32]} 27. Kf2 a4 28. a3 Nb6 29. g4 h6 30. Rd2 Bd5 31. Nd7 {Threatens to win with Nxb6.} Bf7 32. Nxb6 {Accuracy: White = 90%, Black = 91%.} 1/2-1/2

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.26"]
[Round "3.2"]
[White "Heberla, Bartlomiej"]
[Black "Sadzikowski, Daniel"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2527"]
[BlackElo "2374"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,69,4,-5,0,-2,-7,-3,18,9,8,-4,-1,-29,-15,-30,-32,-21,-6,-12,-4,-66,-7,-10,0,0,0,-14,-14,-17,-14,-14,-10,-15,0,-2,0,0,0,-3,-3,-6,-6,-11,-10,-10,-7,-8,-6,-35,-33,-29,-24,-34,-33,-36,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. e3 O-O 6. Bd2 Be7 {E51: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5.} 7. Bd3 dxc4 8. Bxc4 c5 9. dxc5 Bxc5 10. Qc2 Nbd7 {[%cal Bb8d7,Bd7e5,Be5d3][%mdl 32] [#]} 11. Ng5 $146 ({Predecessor:} 11. O-O a6 12. Ne4 Nxe4 13. Qxe4 Nf6 14. Qc2 {½-½ (14) Psakhis,L (2475)-Zifroni,D (2440) Israel 2018}) 11... b6 12. Bd3 {[%cal Rd3h7]} h6 13. Nh7 Ne5 14. Nxf6+ Qxf6 15. Bh7+ Kh8 16. Ne4 {[%mdl 64] [#] Double Attack} Qe7 {Strongly threatening ...f5.} 17. Nxc5 f5 18. Nd3 Nxd3+ 19. Qxd3 {Hoping for Bg6.} Kxh7 20. O-O Rd8 21. Bb4 Rxd3 22. Bxe7 Ba6 {[#] ...Rd7 is the strong threat.} 23. Rfd1 Rc8 24. Bb4 Rxd1+ 25. Rxd1 $11 {[%mdl 4096] Endgame KRB-KRB} Be2 26. Re1 Rc2 27. Bc3 g5 28. h3 h5 29. h4 gxh4 30. Kh2 Kg6 31. a4 Kg5 32. Bd4 Bc4 33. f3 {The position is equal.} Be2 {White must now prevent ...Bxf3.} 34. Kh3 $1 Rd2 35. Bc3 {Accuracy: White = 92%, Black = 96%.} 1/2-1/2

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.26"]
[Round "3.3"]
[White "Piorun, Kacper"]
[Black "Gajewski, Grzegorz"]
[Result "1/2-1/2"]
[ECO "C80"]
[WhiteElo "2539"]
[BlackElo "2515"]
[Annotator "TA"]
[PlyCount "138"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,138,44,52,50,63,63,50,33,55,46,63,60,59,55,42,36,36,33,33,14,9,0,3,10,7,0,0,0,0,0,0,-45,-52,-64,-6,-6,-8,-16,-28,-38,-16,-19,-14,-27,-27,-35,-35,-35,-35,-35,-35,-35,-35,-35,-34,-34,-34,-35,-34,-35,-35,-35,-35,-35,-35,-42,-35,-35,-35,-35,-35,-35,-35,-35,-35,-42,-35,-42,-35,-37,-35,-40,-5,-7,-8,-37,-37,-37,-37,-37,-22,-22,-22,-22,-17,-17,-17,-17,-17,-17,-10,-17,-17,-17,-17,-17,-17,-17,-17,-17,-17,-17,-17,-17,-17,-17,-17,-17,0,-17,0,-17,-17,-17,-17,-17,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 Be7 7. Re1 b5 $1 {[%mdl 4] is currently scoring better than 7...f5.} 8. Rxe4 {[#] aiming for Bb3. C84: Closed Ruy Lopez: Unusual White 6th moves.} d5 9. Nxe5 Nxe5 10. Rxe5 {Black must now prevent Bb3.White is slightly better.} bxa4 11. Qe2 c6 12. Nc3 Ra7 {[#]} 13. Bf4 $146 ({Predecessor:} 13. Nxa4 O-O 14. Bd2 Bd6 15. f4 Bxe5 16. fxe5 Bf5 17. Bb4 Re8 18. Qf2 Bg6 19. Bd6 {½-½ (65) Saric,I (2695)-Ragger,M (2687) St Petersburg 2018}) 13... a3 14. bxa3 O-O 15. Re1 {[%cal Re5e7]} Bxa3 16. Na4 Qa5 17. Nc5 $1 Bxc5 18. dxc5 Rb7 19. Qe3 Qxa2 20. Qg3 Qxc2 {[#] And now ...f6 would win.} 21. h4 $1 Rb1 22. Rxb1 Qxb1+ 23. Kh2 f6 ({Better is} 23... Qb7 $15 24. Re1 Qd7) 24. Re7 $11 {[%csl Ge7][%cal Rg3g7]} Qg6 $1 25. Qxg6 hxg6 {[%mdl 4096] Endgame KRB-KRB} 26. Rc7 Bf5 27. Rxc6 Rc8 28. Rxa6 Rxc5 29. Be3 Rc4 30. Rd6 Rxh4+ 31. Kg1 Ra4 32. Rxd5 Kf7 33. Rb5 Ra1+ 34. Kh2 Rd1 35. Rb7+ Bd7 36. Rb6 g5 37. Rb2 Be6 38. Rb7+ Kg6 39. Rb5 Bd5 40. Rb2 Bc6 41. Rb6 Be4 42. Ra6 Rd5 43. Ra4 Bf5 44. Ra6 Bd7 45. Rb6 Re5 46. Rd6 Be6 47. Rb6 f5 48. Bd4 Re4 49. f3 Rxd4 50. Rxe6+ $15 {KR-KR} Kf7 51. Ra6 g4 52. Kg3 {The position is equal.} gxf3 53. gxf3 g6 54. Ra7+ Kf6 55. f4 Rd3+ 56. Kf2 Rb3 57. Rc7 Rb6 58. Kf3 Re6 59. Ra7 Re7 60. Ra6+ Kg7 61. Ra1 Rb7 62. Kg3 Rb3+ 63. Kg2 Rb6 64. Kg3 Kf6 65. Ra7 Ke6 66. Ra5 Rb3+ 67. Kf2 Rd3 68. Ra6+ Rd6 69. Ra5 Rb6 {Accuracy: White = 96%, Black = 96%.} 1/2-1/2

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.26"]
[Round "3.3"]
[White "Heberla, Bartlomiej"]
[Black "Sadzikowski, Daniel"]
[Result "0-1"]
[ECO "D38"]
[WhiteElo "2527"]
[BlackElo "2374"]
[Annotator "TA"]
[PlyCount "134"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,134,18,-8,0,0,0,5,7,11,6,6,9,0,0,-6,0,-39,-31,-24,-25,-18,-18,-10,-22,-25,-20,-27,-26,-85,-39,-114,-128,-120,-137,-132,-106,-102,-102,-233,-236,-231,-229,-274,-293,-440,-461,-433,-293,-277,-292,-269,-281,-254,-250,-260,-172,-176,-177,-239,-158,-152,-106,-379,-380,-374,-112,-379,-358,-490,-492,-488,-493,-489,-489,-473,-472,-518,-502,-695,-695,-675,-649,-29962,-29964,-29973,-29974,-29974,-29975,-29975,-29976,-29976,-29977,-29977,-29977,-29977,-29978,-29978,-29970,-29978,-29979,-29980,-29981,-29981,-29981,-29981,-29980,-29980,-29980,-29980,-29981,-29981,-29982,-29982,-29983,-29983,-29984,-29984,-29985,-29985,-29986,-29986,-29987,-29989,-29988,-29988,-29989]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. e3 O-O 6. Bd2 Be7 {E51: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5.} 7. cxd5 exd5 8. Bd3 Nbd7 {The position is equal.} 9. O-O c6 10. Qc2 h6 {[#]} 11. Rab1 $146 ({Predecessor:} 11. Rfb1 Re8 12. b4 Bd6 13. a4 Qe7 14. b5 c5 15. Qa2 c4 16. Bc2 b6 17. Bc1 {½-½ (32) Siegel,W (2146)-Rawlings,A (2334) ICCF email 2010}) 11... Re8 12. b4 Bd6 13. Ne2 Ne4 14. Ng3 Nxg3 15. hxg3 a6 {[%cal Ba7a6,Ba6a5,Ba5a4][%mdl 32]} 16. a4 Nf6 17. b5 cxb5 $1 18. axb5 a5 19. b6 (19. Ra1 $11) 19... Bd7 20. Bb5 ({White should play} 20. Qa2 $15) 20... a4 $17 21. Ne5 Bxb5 22. Rxb5 Qe7 23. Ra1 {[#]} Rec8 $1 {[%cal Rc8c2]} 24. Qa2 (24. Qd1 $17) 24... Bxe5 $19 25. dxe5 Qxe5 26. Rb4 a3 27. Rd4 {[#]} (27. Qb1 $142) 27... Rc4 $1 {[%mdl 512]} 28. Bb4 (28. Rxc4 dxc4) 28... Rxd4 29. exd4 Qxd4 30. Bxa3 Qxb6 31. Qc2 Qc6 32. Qb2 Re8 33. Rb1 h5 34. Rc1 (34. Bb4 {was called for.}) 34... Qa4 35. Bc5 Qe4 {aiming for ...Qe1+!} 36. Bd4 $2 {[%mdl 8192] [#]} (36. f3 $17 Qd3 37. Qb1) 36... Qe1+ $1 {[%mdl 512]} 37. Kh2 (37. Rxe1 $2 {leads to mate.} Rxe1+ 38. Kh2 Ng4+ 39. Kh3 Rh1#) 37... Ng4+ 38. Kh3 Qe6 39. Qb6 Nxf2+ 40. Kh2 Ng4+ 41. Kh1 Qxb6 42. Bxb6 {[%mdl 4096] Endgame KRB-KRN} f6 43. Bg1 b5 44. Rc5 Rb8 45. Rxd5 b4 46. Bd4 b3 {Black mates.} 47. Bb2 Re8 {[%cal Re8e1]} 48. Bd4 {[#]} b2 $1 49. Rb5 (49. Bxb2 Re1#) 49... Re1+ 50. Bg1 Nf2+ 51. Kh2 b1=Q 52. Rxb1 Rxb1 53. Bxf2 {KR-KB} Kh7 54. Be3 Kg6 55. Bd4 Kf5 56. Bc5 Kg4 57. Ba7 Rb3 58. Bf2 Rd3 59. Be1 g5 60. Bf2 Kf5 61. Bb6 Rd1 62. Bc5 g4 63. Be7 Ke4 64. Bxf6 Kd3 65. Bd4 Ke2 66. Bf2 Kf1 67. Be3 Re1 {Accuracy: White = 62%, Black = 84%.} 0-1

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.26"]
[Round "3.4"]
[White "Gajewski, Grzegorz"]
[Black "Piorun, Kacper"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "2515"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "127"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,127,0,0,2,12,12,19,0,77,68,57,45,64,0,0,0,39,0,43,35,56,41,39,38,52,53,64,45,73,55,52,46,51,27,25,0,20,0,0,0,0,0,0,0,63,28,24,16,10,0,0,-8,25,41,46,30,44,30,41,16,23,0,20,15,9,13,25,25,25,21,21,29,78,75,90,90,92,90,90,90,91,91,93,69,75,75,79,68,80,80,80,80,80,80,77,33,257,-29999,66,66,66,66,66,0,0,0,0,0,0,0,0,0]} 1. c4 Nf6 2. Nc3 c5 3. Nf3 e6 4. e3 d5 5. cxd5 exd5 6. d4 a6 7. dxc5 Bxc5 8. Be2 Nc6 9. O-O O-O 10. b3 {D32: Tarrasch Defence: Sidelines and lines without g3.} Bg4 11. Bb2 Ba7 12. Nd4 Be6 (12... Bxd4 $11 {remains equal.} 13. Bxg4 Be5) 13. Nxc6 $16 (13. Nxe6 fxe6 14. Rc1 Qd6 $11) 13... bxc6 14. Na4 Ne4 {[#]} 15. Ba3 $146 ({Much weaker is} 15. Bxa6 $6 Bxe3 16. fxe3 Rxa6 $11) (15. Rc1 $14) ({Predecessor:} 15. Rc1 Qd6 16. Bd3 Bb8 17. f4 Bf5 18. Bd4 Ba7 19. Bxe4 Bxe4 20. Rf2 {½-½ (31) Raznikov,D (2490)-Kursova,M (2326) Yerevan 2014}) 15... Re8 $11 16. Rc1 Bd7 17. Nc5 Nxc5 18. Bxc5 Bb8 19. Bf3 Bf5 20. Re1 Qf6 21. Bd4 Qe6 22. Qd2 Bd6 23. g3 Ba3 24. Bb2 Bf8 25. b4 Be4 26. Be2 Rec8 ({Of course not} 26... Qh3 $6 27. f3 $16) 27. f3 Bg6 28. Bd4 a5 29. bxa5 c5 $1 {[%cal Rc5d4]} 30. Bc3 h5 (30... c4 $11) 31. Bd3 Bxd3 32. Qxd3 Be7 33. Red1 Rd8 34. Rb1 d4 (34... c4 {with more complications.} 35. Qd4 Bf6 36. Qd2 Bxc3 37. Qxc3 Qc6) 35. exd4 cxd4 36. Bd2 ({Wrong is} 36. Bxd4 $2 Bc5 $19) 36... Qxa2 37. Re1 Bc5 38. Rb5 Rac8 39. Rc1 Ba7 40. Rxc8 Rxc8 41. Rxh5 $40 {[%mdl 128] [#] aiming for Qh7+. White mounts an attack.} Qc2 42. Qxc2 Rxc2 {[%mdl 4096] Endgame KRB-KRB} 43. Bf4 $1 d3+ 44. Kf1 Ra2 {[#]} 45. Rd5 $1 f6 46. h4 Kh7 47. h5 Ra1+ 48. Kg2 Ra2+ 49. Kh3 Bf2 50. Kg4 Be1 51. Rxd3 {And now Rd7 would win.} Rxa5 52. Rd7 Kg8 53. h6 gxh6 54. Bxh6 f5+ 55. Kf4 Bc3 56. Bg5 {Hoping for Bh4.} Kf8 $2 (56... Bb2 $14 57. Rd1 Kf7) 57. Rb7 $4 {[%mdl 8192]} (57. Bd8 $18 Rb5 58. Kg5) 57... Be5+ $2 (57... Bd2# {mates}) 58. Kxf5 $14 {Threatens to win with Be7+.} Bxg3+ 59. Kg6 Ra6+ 60. Bf6 ({White should play} 60. Kh7 $14) 60... Be5 $1 $11 {The position is equal.} 61. Rf7+ Kg8 62. f4 Bd4 63. Rg7+ Kf8 64. Rf7+ {Accuracy: White = 81%, Black = 76%.} 1/2-1/2

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.26"]
[Round "3.4"]
[White "Sadzikowski, Daniel"]
[Black "Heberla, Bartlomiej"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2374"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,66,15,4,27,29,53,47,49,48,48,49,49,50,75,42,57,37,28,44,45,44,42,42,56,58,77,22,59,57,106,130,102,125,233,226,268,270,383,377,377,384,599,591,566,561,770,676,1694,1660,2019,1987,1541]} 1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d6 5. Nc3 O-O 6. O-O e5 7. d3 Re8 8. Rb1 $1 {8.Rb1 scores better than 8.Bg5.} c6 9. e4 a6 {A24: English Opening vs King's Indian: Lines without ...Nc6.} 10. b4 b5 11. a4 bxc4 {White is slightly better.} 12. dxc4 {[#]} Bf8 $146 ({Predecessor:} 12... Be6 13. Qe2 h6 14. Rd1 Qc7 15. Ba3 Nbd7 16. Rb2 Nb6 17. Nd2 Bg4 18. Bf3 h5 19. Bxg4 Nxg4 {0-1 (57) Auciello,S (2346)-Sorin,A (2512) Buenos Aires 2002}) 13. Qe2 Nbd7 {[%cal Bb8d7,Bd7c5,Bc5e6,Be6d4][%mdl 32]} 14. Rd1 Bb7 15. h3 Qc7 16. Bd2 a5 17. b5 $1 Nc5 18. Ne1 Ne6 19. Nc2 Nd4 20. Qd3 $1 c5 21. Nd5 ({White should try} 21. Ne3 $16) 21... Bxd5 22. Nxd4 $1 Bxc4 23. Qxc4 exd4 24. b6 {[%cal Bb5b6,Bb6b7][%mdl 32]} Qd7 {[#]} (24... Qb7 $16) 25. Qb5 $1 $18 Qxb5 26. Rxb5 Nxe4 (26... d5 $142 27. b7 (27. Bxa5 dxe4 28. b7 Ra6 $14) (27. Rxa5 Rxa5 28. Bxa5 dxe4 $14) 27... Rab8 28. exd5 Bd6) 27. b7 Rab8 28. Bxa5 d5 (28... Nc3 $142) 29. Bxe4 {White is clearly winning.} dxe4 30. Bc7 e3 {[#] And now ...e2 would win.} 31. fxe3 dxe3 32. Bxb8 Rxb8 33. a5 Bg7 {Accuracy: White = 90%, Black = 51%.} 1-0

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.26"]
[Round "3.5"]
[White "Piorun, Kacper"]
[Black "Gajewski, Grzegorz"]
[Result "1-0"]
[ECO "C80"]
[WhiteElo "2539"]
[BlackElo "2515"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,101,41,38,52,52,57,60,55,55,35,55,39,55,52,51,41,45,32,37,6,60,56,57,20,29,31,53,48,53,30,101,63,170,162,168,170,152,166,181,89,99,83,128,76,76,76,87,76,76,76,76,76,76,76,148,141,153,137,145,134,140,138,141,142,146,149,125,132,200,196,327,310,389,378,426,404,395,378,374,357,341,316,1704,1493,1493,288,29983,552,29984,29985]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 Be7 7. Re1 b5 {is now more promising than 7...f5.} 8. Rxe4 {C84: Closed Ruy Lopez: Unusual White 6th moves.} d5 9. Nxe5 Nxe5 10. Rxe5 {Bb3 is the strong threat.White is slightly better.} bxa4 11. Qe2 c6 {[#]} 12. Bf4 $5 $146 {[%mdl 8] New and interesting.} ({Predecessor:} 12. Bd2 Be6 13. f4 g6 14. Nc3 a3 15. b3 Bd6 16. f5 gxf5 17. Rf1 Bxe5 18. Qxe5 {½-½ (46) Vachier Lagrave,M (2780)-Carlsen,M (2872) London 2019}) 12... Ra7 13. Nc3 a3 14. bxa3 O-O 15. Re3 Bxa3 16. Na4 Be7 (16... Re7 $1 $11) 17. Re1 $36 {[%cal Re3e7][%mdl 2048] White is pushing.} Be6 18. Nc5 Bxc5 $1 19. dxc5 Re8 20. Bd6 h6 21. Qd2 Qg5 (21... Rb7 $11) 22. Qd4 {Black must now prevent Rg3.} Kh7 (22... Qf5 $1 $14) 23. Rg3 $1 $18 {[%cal Rg3g5]} Qf6 24. Be5 $1 {[%cal Re5f6]} Bf5 25. f4 Rae7 {With the idea ...Bg6.} 26. Ree3 ({Stronger than} 26. Bxf6 Rxe1+ 27. Kf2 R1e2+ 28. Kg1 Re1+ 29. Kf2 R1e2+ 30. Kg1 Re1+ $11) (26. h3 $18 Rxe5 27. Rxe5 (27. fxe5 Qe6 $16)) 26... Rxe5 $16 27. fxe5 Qe6 28. c3 ({White should try} 28. Re2) 28... Rb8 29. h3 Bg6 30. Re2 Rb5 31. a4 Rb1+ 32. Kh2 a5 33. Rge3 Ra1 ({Better is} 33... Be4) 34. c4 $1 Rxa4 35. cxd5 {[%mdl 64] Discovered Attack} Rxd4 36. dxe6 fxe6 {[%mdl 4096] Endgame KRR-KRB} 37. Ra2 a4 38. Rea3 Re4 39. Rxa4 Rxe5 40. Rc4 Bd3 {[#]} (40... h5 $16 41. Rc3 Re1) 41. Rc3 $1 $18 {[%cal Rc3d3]} Bb5 (41... Rd5 {might work better.} 42. Raa3 Bf1) 42. Ra7 Rg5 43. Rg3 Rxg3 44. Kxg3 {KR-KB} Kg6 45. Kf4 Kf6 46. Rd7 Bc4 47. h4 e5+ $2 (47... h5 48. Rd6 Bd5) 48. Ke3 Bd5 49. Rd6+ $2 (49. g4 {Hoping for g5+!} Bh1 {[#]} 50. g5+ $1 {[%mdl 512]} hxg5 51. hxg5+ Kg6 52. Rd1) 49... Kf5 $2 {[#]} (49... Kf7 $18 50. Rd7+ Kf6) 50. g4+ $1 {[%mdl 512]} Kxg4 {[#]} 51. Rxd5 $1 {[%mdl 512] Accuracy: White = 78%, Black = 58%.} 1-0

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.26"]
[Round "3.6"]
[White "Gajewski, Grzegorz"]
[Black "Piorun, Kacper"]
[Result "0-1"]
[ECO "A15"]
[WhiteElo "2515"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,104,22,-2,6,6,14,12,15,0,0,0,9,0,14,10,60,40,62,50,35,0,72,1,0,-13,-13,-26,-13,-14,-12,-3,31,16,44,35,54,-24,0,-17,105,-131,-106,-177,-205,-195,-143,-502,-508,-631,-616,-1421,-1389,-1619,-455,-436,-453,-434,-321,-433,-421,-474,-432,-470,-464,-512,-456,-513,-506,-590,-571,-567,-583,-583,-577,-562,-558,-541,-535,-736,-648,-781,-566,-683,-677,-670,-670,-610,-594,-714,-641,-688,-683,-675,-670]} 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. e3 d6 6. Nge2 e5 7. d4 exd4 {E61: King's Indian: Early deviations for White, including Smyslov System.} 8. Nxd4 Re8 9. O-O Nbd7 {The position is equal.} 10. h3 Nc5 11. Qc2 a5 12. b3 h5 13. Bb2 h4 14. g4 $1 {[#]} c6 $146 ({Predecessor:} 14... Nxg4 15. hxg4 Bxg4 16. f3 Bd7 17. Qf2 Qg5 18. f4 Qh6 19. Rad1 h3 20. Bf3 c6 {1-0 (84) Erigaisi,A (2559)-Travadon,L (2431) chess.com INT 2020}) 15. Rae1 Qe7 16. Rd1 Nh7 (16... Nxg4 $11 17. hxg4 Bxg4) 17. Nf3 (17. e4 $16) 17... f5 $11 18. gxf5 Bxf5 19. Qe2 g5 20. Nd4 Bd7 21. Kh1 Kh8 22. Rg1 Qf7 23. Qc2 Rf8 24. Rdf1 ({White should play} 24. Rd2 $14) 24... Rae8 25. Nce2 Qh5 (25... Qe7 $11 {remains equal.}) 26. Qd1 $2 (26. Nf4 $1 $16 {[%cal Rf4h5]} gxf4 27. Bf3) 26... Nf6 27. Nc2 (27. f4 $17 {keeps fighting.}) 27... Nfe4 $1 $19 28. Bxg7+ Kxg7 29. Qd4+ $2 {[%mdl 8192] This costs White the game.} (29. Kh2 $17 {is more resistant.}) 29... Kh7 30. f3 Ng3+ 31. Nxg3 hxg3 32. Qxd6 {[#]} Bxh3 (32... Rf4 $142 $3 {[%mdl 512]} 33. Qc7 {[#]} (33. exf4 Bxh3) 33... Rh4 $1 {[%mdl 512]} 34. Qxg3 Bxh3 35. Bxh3 Rxh3+ {[%mdl 64] Double Attack} 36. Kg2 Rxg3+ 37. Kxg3 Kg7) 33. Qxg3 Bf5+ {[%mdl 64] Discovered Attack} 34. Qh2 Qxh2+ 35. Kxh2 Bxc2 {Black is clearly winning.} 36. e4 Bd3 37. Re1 {[#]} g4 $1 38. fxg4 Bxe4 39. Bxe4+ Rxe4 40. Rxe4 Nxe4 {[%mdl 4096] Endgame KRN-KR} 41. Re1 Rf4 42. Kh3 Kg6 43. Kh4 Kf6 44. Re2 Ke5 45. Re1 Rf8 {[%cal Rf8h8]} 46. Kh3 Rh8+ 47. Kg2 Kf4 48. Rf1+ Kxg4 49. Rf7 Nc5 50. Kf2 Re8 51. Rg7+ Kf4 52. Rf7+ Ke4 {Accuracy: White = 49%, Black = 74%.} 0-1

[Event "77th LOTTO POL-ch 2020"]
[Site "Warsaw"]
[Date "2020.07.26"]
[Round "3.7"]
[White "Gajewski, Grzegorz"]
[Black "Piorun, Kacper"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "2515"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2020.07.21"]
[EventType "k.o."]
[EventCountry "POL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,76,27,35,48,33,62,75,68,68,79,72,74,87,85,69,101,99,102,117,108,110,191,189,174,179,143,153,224,254,238,246,305,282,376,362,293,250,248,13,12,0,0,0,0,0,0,0,0,28,625,625,600,592,724,724,724,724,724,724,29986,724,671]} 1. c4 Nf6 2. Nc3 c5 3. g3 g6 4. Bg2 Bg7 5. Nf3 O-O 6. d4 cxd4 7. Nxd4 Nc6 8. O-O Qa5 9. e3 {The modern move.} Qb4 {A39: Symmetrical English vs ...g6: 4 Bg2 Bg7 5 Nf3 Nf6 6 0-0 0-0 7 d4.} 10. Qe2 {[#]} Nxd4 $146 ({Predecessor:} 10... d6 11. Nxc6 bxc6 12. Bxc6 Rb8 13. Rb1 Bg4 14. Qd3 Rfc8 15. Bb5 Rxb5 16. cxb5 Bf5 17. e4 Nxe4 {1-0 (26) Lozano,A (1886)-Laohawirapap,P (1821) Bangkok 2020}) 11. exd4 Re8 {White is better.} 12. a3 Qa5 13. b4 Qd8 14. h3 $36 {[%mdl 2048] White is on the roll.} d6 15. Be3 Rb8 16. Rfd1 Bd7 17. Rac1 Qc8 18. Kh2 b6 {[#]} (18... a6 $16 {keeps fighting.}) 19. c5 $1 $18 bxc5 20. dxc5 dxc5 21. Bxc5 {[%mdl 64] Double Attack, Discovered Attack} Bc6 (21... Bh6 $16) 22. Bxc6 Qxc6 23. Bxa7 Ra8 24. Nd5 Qa4 {Threatens to win with ...Nxd5.} 25. Nxe7+ Kh8 26. Bc5 Ng8 27. b5 $2 ({Better is} 27. Rd3 $18) 27... Nxe7 $11 28. Bxe7 Qa7 $1 29. Bc5 {aiming for Qxe8+!} Rxe2 30. Bxa7 Rxa7 31. Rd8+ Bf8 $1 {...Kg7 is the strong threat.} 32. b6 Rxa3 $2 {[%mdl 8192] This costs Black the game.} (32... Rae7 $11 33. Kg2 (33. Rxf8+ Kg7 $11) 33... Kg7) 33. b7 $18 Rxf2+ 34. Kg1 Raa2 35. b8=Q {White wants to mate with Qe5+.} Rg2+ 36. Kf1 Rgf2+ {[#]} 37. Ke1 $1 {White threatens Qe5+ and mate.} Rae2+ 38. Kd1 Kg7 {Accuracy: White = 83%, Black = 51%.} 1-0

