[Event "TCEC Season 19 - Sufi Bonus 3"] [Site "https://tcec-chess.com"] [Date "2020.11.08"] [Round "37.1"] [White "LCZero v0.26.3_T60.SV.JH.92"] [Black "StockfishClassical 2020073110"] [Result "1/2-1/2"] [WhiteElo "3546"] [BlackElo "3543"] [Annotator "Watson / Dojknas"] [Variant "Standard"] [ECO "C19"] [Opening "French Defense: Winawer Variation, Advance Variation"] [StudyName "Watson Sept 2022 Book Review"] [ChapterName "LCZero v0.26.3_T60.SV.JH.92 - StockfishClassical 2020073110"] [ChapterURL "https://lichess.org/study/XJm1jj4y/kt0idBQy"] [Orientation "white"] 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. h4 Qc7 8. h5 h6 9. Rb1! { An example of the influence of engines. After 50 years of practice with this variation, this move (the first engine choice) was unknown. In the past two years it has become the clear favorite. } 9... b6 10. Qg4 cxd4 (10... Rg8 11. Bb5+ Kf8 12. Bd3 Ba6 { was tested in a couple of high-profile Vachier Lagrave-Nepomniachtchi games in 2020. Engines began to prefer the exchange. }) 11. Qxg7 Rg8 12. Qxh6 Qxe5+ 13. Ne2 dxc3 { [#] There are many variants of this position in Winawer theory. White's bishops and h-pawn are balanced by Black's strong center and activity. This might seem easier for the first player to play in practice, but with engines we find that White, in order to even try for a small advantage, probably has to go into the following sequence, and although there's more to be investigated here, equality seems the likely outcome: } 14. Bf4 Qf5 15. Nd4 (15. Nxc3 { , best is } 15... Ba6! 16. Nb5! Bxb5 17. Bxb5+ Nd7 { , e.g., } 18. Kf1 (18. Be3 Qxc2 19. Rc1 Qb2 20. Bxd7+ Kxd7 21. Qf4 e5 22. Qxf7 Rxg2 23. h6 Rag8 24. Rc7+ { forces a draw }) 18... Qg4 19. g3 Qf3 20. Rh3 Nf5 21. Qf6 Ne3+ 22. Ke1 Nxc2+ 23. Kd2 Qxf2+ 24. Kd3 Ne1+ 25. Rxe1 Qxe1 26. Bxd7+ Kxd7 27. Qxf7+ Kc6 28. Qc7+ Kb5 29. Qd7+ Ka6 30. Qa4+ Kb7 31. Qd7+) 15... Qe4+ 16. Be3 Ba6 17. f3 Qe5 18. g4! Qg3+ (18... Bxf1 19. Kxf1 Nbc6 { is also playable, and eventually drew in one correspondence game. }) 19. Bf2 Qe5+ 20. Qe3 Qxe3+ 21. Bxe3 Bxf1 22. Kxf1 Kd7 (22... e5 23. Nb5 Kd7 24. Nxc3 f6 25. h6 Nbc6 26. h7 Rh8 27. Rd1 Ke6 { is similar }) 23. h6 e5 24. Nb5 f6 25. Rd1 Nbc6 26. Nxc3 Ke6 { [#] } 27. Ne2 (27. Rh5 Rh8 28. f4 exf4 (28... Rag8 29. Nxd5 Rxg4 30. f5+ Kf7 31. Nxe7 Kxe7) 29. Bxf4 Rag8 30. g5 fxg5 31. Bxg5 Rf8+ 32. Kg2 Rf5) 27... Rh8 (27... Rg6 28. Kf2 Rh8 29. Rh5 $14) 28. Kf2 Rac8 (28... Kf7 29. g5 d4 30. Bc1 fxg5 31. Bxg5 Nf5 32. f4 Rag8 33. Rdg1 e4) 29. c3 Rcg8 30. Rh5 Na5 31. Rg1 Rh7 32. a4 Nc4 33. Bc1 Kf7 34. Rgh1 Nd6 35. Rd1 Ke6 36. Re1 Kf7 37. Rf1 { 1/2-1/2 The game is a draw. } 1/2-1/2