[Event "LM SaintLouisChessClub Thalia Cervantes simul"] [Site "https://lichess.org/FBDKa734"] [Date "2021.04.02"] [White "SaintLouisChessClub"] [Black "umy15298"] [Result "0-1"] [UTCDate "2021.04.02"] [UTCTime "19:33:58"] [WhiteElo "2183"] [BlackElo "1852"] [Variant "Standard"] [TimeControl "900+5"] [ECO "D11"] [Opening "Slav Defense: Quiet Variation, Pin Defense"] [Termination "Normal"] [Annotator "lichess.org"] 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bg4 { D11 Slav Defense: Quiet Variation, Pin Defense } 5. h3 Bh5 6. g4 Bg6 7. Nc3 e6 8. Ne5 Nbd7 9. g5?? { (0.62 → -1.97) Blunder. h4 was best. } (9. h4) 9... Nxe5 10. dxe5 Ne4 11. Nxe4 Bxe4 12. Rg1 Qc7 13. f4? { (-1.62 → -2.98) Mistake. cxd5 was best. } (13. cxd5 Qxe5 14. Bd2 Qxb2 15. dxc6 Bxc6 16. Qc1 Qxc1+ 17. Rxc1 Ba3 18. Rc4 O-O 19. Bd3 Rfd8) 13... O-O-O 14. Bd2 dxc4 15. Bd3?? { (-3.71 → -9.72) Blunder. Qc1 was best. } (15. Qc1 b5) 15... Rxd3 16. Qe2 Bc5 17. O-O-O Qb6 18. Bc3?! { (-15.32 → Mate in 8) Checkmate is now unavoidable. Qxd3 was best. } (18. Qxd3 Bxd3 19. Rg2 c3 20. Bxc3 Bxe3+ 21. Rdd2 Bxd2+ 22. Rxd2 Qg1+ 23. Rd1 Qe3+ 24. Rd2 Bg6) 18... Rhd8?! { (Mate in 8 → -16.49) Lost forced checkmate sequence. Bxe3+ was best. } (18... Bxe3+ 19. Rd2 Rxc3+ 20. Kd1 Bxd2 21. Rg2 Bxg2 22. Qxg2 Qxb2 23. Qxd2 Rd8 24. Qxd8+ Kxd8 25. Ke1) 19. Rd2?! { (-16.49 → Mate in 7) Checkmate is now unavoidable. Rxd3 was best. } (19. Rxd3 cxd3) 19... Bxe3 20. Rd1 Rxc3+ 21. bxc3 Qb1# { Black wins by checkmate. } 0-1