[Event "IM Mihnea Costachi simul"] [Site "https://lichess.org/zPL0R9cT"] [Date "2021.03.20"] [White "RomanianForce"] [Black "genericuser25507"] [Result "0-1"] [UTCDate "2021.03.20"] [UTCTime "17:31:26"] [WhiteElo "1500"] [BlackElo "1500"] [WhiteTitle "IM"] [Variant "Standard"] [TimeControl "1800+10"] [ECO "D31"] [Opening "Semi-Slav Defense: Accelerated Move Order"] [Termination "Normal"] [Annotator "lichess.org"] 1. d4 d5 2. c4 e6 3. Nc3 c6 { D31 Semi-Slav Defense: Accelerated Move Order } 4. cxd5 exd5 5. Bf4 Bf5 6. e3 Nf6 7. Nf3 Bd6 8. Bg5 Nbd7 9. Bd3 Bxd3 10. Qxd3 h6 11. Bh4 Qe7 12. O-O g5 13. Bg3 Bxg3 14. hxg3 h5?! { (0.12 → 1.15) Inaccuracy. O-O was best. } (14... O-O 15. Nd2) 15. Nxg5 h4 16. gxh4? { (1.55 → 0.00) Mistake. Rae1 was best. } (16. Rae1) 16... Rxh4 17. g3 Rh5 18. Nf3?? { (-0.37 → -5.14) Blunder. f4 was best. } (18. f4) 18... Qe6 19. Nh4?! { (-5.27 → -7.82) Inaccuracy. Ng5 was best. } (19. Ng5 Rxg5 20. Kg2 O-O-O 21. Rh1 Ne4 22. Rh4 Ndf6 23. Rah1 Rdg8 24. Rh8 Kd7 25. Rxg8 Rxg8) 19... Rxh4 20. gxh4?! { (-5.95 → -12.39) Inaccuracy. Kg2 was best. } (20. Kg2) 20... Qg4+ 21. Kh2 Qxh4+ 22. Kg2?! { (-11.48 → Mate in 11) Checkmate is now unavoidable. Kg1 was best. } (22. Kg1 Qg4+) 22... Qg4+ 23. Kh2 O-O-O?! { (Mate in 12 → -12.23) Lost forced checkmate sequence. Qh4+ was best. } (23... Qh4+ 24. Kg2 Qg5+ 25. Kh1 Qh6+ 26. Kg2 Qg7+ 27. Kh2 Ng4+ 28. Kh1 O-O-O 29. Qh7 Qxh7+ 30. Kg2) 24. Rg1?! { (-12.23 → Mate in 2) Checkmate is now unavoidable. Qh7 was best. } (24. Qh7 Nxh7 25. Rg1 Qf3 26. Rg2 Ng5 27. Kg1 Qh3 28. Kf1 Nf3 29. Ne2 Qh1+ 30. Rg1 Nxg1) 24... Rh8+ 25. Qh7 Rxh7# { Black wins by checkmate. } 0-1