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.
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PGN OF THE GAME:
[Event “TCEC Cup 9 Semifinal”]
[Site “https://lichess.org/vdgFod06“]
[Date “2021.10.26”]
[Round “1.22”]
[White “Stockfish dev15_20211015”]
[Black “ScorpioNN 3.0.14e”]
[Result “1-0”]
[WhiteElo “3645”]
[BlackElo “3502”]
[Variant “Standard”]
[TimeControl “1800+5”]
[ECO “D35”]
[Opening “Queen’s Gambit Declined: Exchange Variation, Positional Variation”]
[Termination “Unknown”]
[Annotator “lichess.org”]
1. c4 e6 2. d4 Nf6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 { D35 Queen’s Gambit Declined: Exchange Variation, Positional Variation } Nbd7 6. e3 Be7 7. Bd3 c6 8. Nge2 h6 9. Bh4 O-O 10. O-O Ne4 11. Bxe7 Qxe7 12. Bxe4 dxe4 13. h3 Nf6 14. Qa4 Re8 15. Rfc1 Bd7 16. a3 b6 17. Qb4 Qd8 18. Rc2 h5 19. Qd6 h4 20. Rac1 g5 21. Qh2 Kg7 22. Nb1 Re6 23. Nd2 Nd5 24. Nc4 f6 25. Nc3 Ne7 26. Nd2 Be8 27. Kh1 Kh6 28. Qg1 f5 29. b4 Bh5 30. a4 Qg8 31. Qh2 Rf8 32. b5 Ng6 33. bxc6 Rxc6 34. d5 Rcc8 35. Nb3 f4 36. Nd4 Qh8 37. Ne6 Rf5 38. Nd4 Re5?! { (0.20 → 0.88) Inaccuracy. Rff8 was best. } (38… Rff8) 39. Qg1 Rc5 40. Ne6 Rc4 41. Nd4 Qf8 42. Nc6 Rf5 43. Nd4 Re5 44. Nc6 Rf5 45. Qf1 Rc5 46. Nd4 Re5 47. Ne6 Rxe6 48. dxe6 Qc8? { (0.07 → 1.21) Mistake. f3 was best. } (48… f3) 49. exf4 Nxf4 50. e7 Nd3 51. f3 Nxc1 52. fxe4 Qe6 53. Qf8+?? { (1.98 → 0.00) Blunder. Nd5 was best. } (53. Nd5 Rxc2) 53… Kh7 54. Rf2 Rxc3 55. Rf6 Rxh3+ 56. Kg1 Ne2+ 57. Kf2 Qxf6+ 58. Qxf6 Rg3 59. Qf5+ Kg7 60. Qe5+ Kh7 61. Qc7 Kh6 62. Qc4 Nc3 63. Qe6+ Kg7 64. Qe5+ Kh7 65. e8=R Bxe8 66. Qxe8 Nd1+ 67. Ke2 Ne3 68. e5 Nf5 69. Qh5+ Kg8 70. Qg6+ Ng7 71. Kf2 Rg4 72. e6 Rf4+ 73. Kg1 Rf8 74. e7 Re8 75. Qf6 g4 76. Kh2 h3 77. gxh3 gxh3 78. Kxh3 Nh5 79. Qe6+ Kg7?! { (5.30 → 72.21) Inaccuracy. Kh7 was best. } (79… Kh7 80. Qf5+) 80. Kg4 Ng3?! { (72.30 → Mate in 15) Checkmate is now unavoidable. Rxe7 was best. } (80… Rxe7 81. Qxe7+ Kg6 82. Qe8+ Kf6 83. Kxh5 a6 84. Qg6+ Ke5 85. Qxb6 Kd5 86. Qxa6 Ke4 87. Qb6) 81. Kxg3 b5 82. Kf4 bxa4 83. Kg5 Rxe7 { White wins. } 1-0
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