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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[Event “TCEC Cup 9 Round32”]
[Site “https://lichess.org/2SXiXLOE“]
[Date “2021.10.18”]
[Round “1.2”]
[White “Stockfish dev15_20211015”]
[Black “Amoeba 3.4”]
[Result “1-0”]
[WhiteElo “3645”]
[BlackElo “3258”]
[Variant “Standard”]
[TimeControl “1800+5”]
[ECO “C11”]
[Opening “French Defense: Steinitz Variation”]
[Termination “Unknown”]
[Annotator “lichess.org”]
1. e4 e6 2. Nc3 d5 3. d4 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 { C11 French Defense: Steinitz Variation } Be7?! { (0.00 → 0.59) Inaccuracy. cxd4 was best. } (6… cxd4 7. Nxd4 Nc6 8. Be3 Qb6 9. Na4 Qa5+ 10. Nc3) 7. Be3 a6 8. dxc5 Nxc5 9. a3 O-O 10. h4 b5 11. Ng5 Qc7 12. Bxc5 Qxc5 13. Qd3 g6 14. O-O-O b4 15. Nxh7 bxc3 16. h5 g5 17. Nxg5 cxb2+ 18. Kb1 Bxg5 19. Qg3 Kh8 20. fxg5 Rg8 21. g6 Rg7 22. Rd3 Nd7 23. Qf4 Qf8? { (2.79 → 5.20) Mistake. Rb8 was best. } (23… Rb8 24. Be2) 24. Rf3 Kg8 25. Qg5 Bb7 26. Rh4 Qd8 27. gxf7+ Kh8 28. Qf4 Qg5 29. h6 Rg6 30. Bd3 Qxf4 31. Rhxf4 Rxg2 32. f8=Q+ Rxf8 33. Rxf8+ Nxf8 34. Rxf8+ Rg8 35. Rxg8+ Kxg8 36. Kxb2 Kf7 37. Kc3 Bc6 38. Kd4 Ba4 39. c4 dxc4 40. Bxc4 a5 41. Bxe6+ Kg6 42. Kc5 Kxh6 43. Kd6 Be8 44. Bd7 Bf7 45. e6 Bg8 46. e7 Bf7 47. e8=R Bxe8 { White wins. } 1-0
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