[Event "GM Buhmann simul"] [Site "https://lichess.org/qNQ7THu3"] [Date "2021.03.11"] [White "Buhmann"] [Black "en_passant2"] [Result "0-1"] [UTCDate "2021.03.11"] [UTCTime "18:04:41"] [WhiteElo "2473"] [BlackElo "2203"] [WhiteTitle "GM"] [Variant "Standard"] [TimeControl "300+5"] [ECO "D12"] [Opening "Slav Defense: Quiet Variation, Schallopp Defense"] [Termination "Time forfeit"] [Annotator "lichess.org"] 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. e3 Bf5 { D12 Slav Defense: Quiet Variation, Schallopp Defense } 5. Nc3 e6 6. Nh4 Bg6 7. Nxg6 hxg6 8. Be2 Nbd7 9. Qb3 Rb8 10. Bd2 Bd6 11. h3 O-O 12. O-O dxc4 13. Bxc4 e5 14. Rad1 b5 15. Be2 Qe7 16. Rfe1 a5 17. Qc2 e4 18. Bf1?! { (-0.13 → -0.94) Inaccuracy. f3 was best. } (18. f3 exf3) 18... Rfc8 19. g3? { (-0.80 → -2.43) Mistake. Rc1 was best. } (19. Rc1 Nb6 20. Be2 Re8 21. a3 Qe6 22. Nd1 b4 23. axb4 axb4 24. Qxc6 g5 25. g3 Nfd5) 19... b4?! { (-2.43 → -1.22) Inaccuracy. c5 was best. } (19... c5 20. dxc5) 20. Na4 Nb6? { (-1.38 → -0.20) Mistake. c5 was best. } (20... c5 21. Qb3) 21. Nxb6 Rxb6 22. Bc1?! { (0.00 → -0.71) Inaccuracy. Rc1 was best. } (22. Rc1 Qe6 23. Qc4 Nd5 24. Qe2 f5 25. Rc2 g5 26. Qh5 g6 27. Qh6 Bf8 28. Qxg5 Be7) 22... c5?! { (-0.71 → 0.00) Inaccuracy. Qe6 was best. } (22... Qe6 23. b3) 23. Bg2? { (0.00 → -1.66) Mistake. b3 was best. } (23. b3 Qe6 24. Qb1 cxd4 25. exd4 Qf5 26. Bd2 Rbc6 27. g4 Bh2+ 28. Kxh2 Qxf2+ 29. Bg2 Rc2) 23... Rbc6 24. d5 R6c7 25. b3 c4 26. bxc4 Rxc4 27. Qa4? { (-2.36 → -4.53) Mistake. Qb1 was best. } (27. Qb1 Be5) 27... R4c5? { (-4.53 → -2.19) Mistake. Rc2 was best. } (27... Rc2) 28. Bb2 Nxd5 { Black wins on time. } 0-1