The TCEC Cup 9 is a knockout format played in TCEC, including all qualifying participants. It will be a knockout championship with the 32 participants divided into brackets. For an engine to win the TCEC Cup gold medal it must win a total of five matches. The two losing semifinalists will play a match for 3rd and 4th place (`small final’). No bookless games will be played in the TCEC Cup.
c. All games take place in pairs in which both engines each play each side of every book exit. Engines will play both sides of each position selected. Openings chosen will roughly approximate human games in terms of their frequency. A new opening should thus occur every other game, then the reverse game is played, so two games in a row from the same starting book position. Because each engine will thus play both sides of every opening, fairness is guaranteed.
TCEC OFFICIAL
https://tcec-chess.com
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https://www.chess.com/hr/computer-chess-championship
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https://ccrl.chessdom.com
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PGN OF THE GAME:
[Event “TCEC Cup 9 Quarterfinal”]
[Site “https://lichess.org/9rUYKBLP“]
[Date “2021.10.25”]
[Round “1.43”]
[White “KomodoDragon 2.5.1”]
[Black “Igel 3.0.10”]
[Result “1-0”]
[WhiteElo “3595”]
[BlackElo “3509”]
[Variant “Standard”]
[TimeControl “1800+5”]
[ECO “D85”]
[Opening “Grünfeld Defense: Exchange Variation”]
[Termination “Unknown”]
[Annotator “lichess.org”]
1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 { D85 Grünfeld Defense: Exchange Variation } 5. e4 Nxc3 6. bxc3 c5 7. Bb5+ Bd7 8. Bxd7+ Nxd7 9. Nf3 Bg7 10. h4 Qa5 11. Bd2 h6 12. a4 O-O 13. O-O e6 14. Qe2 Rfc8 15. Rfe1 Qc7 16. a5 a6 17. Reb1 Rcb8 18. e5 b5 19. Re1 Rc8 20. Bf4 cxd4 21. cxd4 Qc3 22. Qe4 Qc6 23. Qe3 Qc3 24. Bxh6 Qxe3 25. Bxe3 Nb8 26. g4 Nc6 27. h5 Nb4 28. Rab1 Nc2 29. Re2 Rab8 30. hxg6 fxg6 31. Ne1 Na3 32. Rb3 Bf8 33. Ng2 Rc6 34. Nh4 Kf7 35. Kg2? { (1.40 → 0.14) Mistake. Bg5 was best. } (35. Bg5 b4 36. Rf3+ Kg8 37. Nxg6 Rc4 38. Rh3 Rxd4 39. f4 Kf7 40. Nxf8 Rxf8 41. Rh7+ Kg8) 35… Be7 36. Bh6 Rg8?! { (0.95 → 1.66) Inaccuracy. Bxh4 was best. } (36… Bxh4 37. Rxa3 Be7 38. Rf3+ Kg8 39. Be3 b4 40. Re1 b3 41. Rh3 Bf8 42. Reh1 Bg7 43. Bh6) 37. Rf3+ Ke8 38. Rf6 Bxf6 39. exf6 Kf7 40. Nf3 Kxf6 41. Bg5+ Kg7 42. d5 exd5 43. Re7+ Kh8 44. Nd4 Rgc8 45. Ne6 Kg8 46. Rg7+ Kh8 47. Rxg6 Kh7 48. Rg7+ Kh8 49. Re7 Kg8 50. Bf6 R8c7 51. Nxc7 Rxf6 52. Rd7 Nc4 53. Kg3 d4 54. Rxd4 Nxa5 55. Rd8+ Rf8 56. Rd5 Rf6 57. f4 Nb7 58. Re5 Rc6 59. Nd5 Kf8 60. g5 Nd6 61. Kg4 a5? { (1.44 → 3.16) Mistake. Rc5 was best. } (61… Rc5 62. g6) 62. Ne7 Rc7? { (3.00 → 4.92) Mistake. Rb6 was best. } (62… Rb6) 63. Nf5 Nc4 64. Rxb5 Kf7 65. Nh6+ Ke6 66. f5+ Kd6 67. g6 Kc6 68. Rb1 Rg7 69. Kh5 Ne5 70. Ng4 Nd3 71. f6 Rg8 72. f7 Nf4+ 73. Kg5 Ne6+ 74. Kf6 Rxg6+ 75. Kxg6 Nf8+ 76. Kf5 Kc7 77. Ra1?! { (Mate in 10 → 63.75) Lost forced checkmate sequence. Re1 was best. } (77. Re1 Kd6 78. Re8 Nh7 79. Ne5 Kc5 80. Rh8 Nf8 81. Rxf8 Kb4 82. Rb8+ Kc3 83. f8=Q Kd2) 77… Kb6 78. Rxa5?! { (Mate in 12 → 60.24) Lost forced checkmate sequence. Rh1 was best. } { White wins. } (78. Rh1 Nd7 79. Rh8 Nc5 80. Rb8+ Ka7 81. f8=Q Nb7 82. Ra8+ Kb6 83. Qb8 Kc6 84. Ne5+ Kb6) 1-0
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