[Event "Rated classical game"] [Site "https://lichess.org/Z6owLKtt"] [Date "2021.04.07"] [White "anatoltchirikov1951"] [Black "OS9"] [Result "0-1"] [UTCDate "2021.04.07"] [UTCTime "16:09:31"] [WhiteElo "1576"] [BlackElo "1643"] [WhiteRatingDiff "-5"] [BlackRatingDiff "+11"] [Variant "Standard"] [TimeControl "1800+0"] [ECO "A45"] [Opening "Indian Defense"] [Termination "Normal"] [Annotator "lichess.org"] 1. d4 Nf6 { A45 Indian Defense } 2. c3 e6 3. e3 d5 4. b3 c5 5. a4 Nc6 6. Bb5 Bd7 7. Bxc6 Bxc6 8. Ba3 b6 9. Nd2 Bd6 10. Ngf3 O-O 11. Qb1 Bc7? { (-1.14 → -0.02) Mistake. Qc7 was best. } (11... Qc7 12. O-O) 12. Qc2?! { (-0.02 → -0.65) Inaccuracy. dxc5 was best. } (12. dxc5) 12... Qd6 13. h3 Nd7 14. O-O b5?? { (-0.66 → 2.54) Blunder. e5 was best. } (14... e5 15. b4) 15. axb5 Bxb5 16. Rfb1?! { (2.82 → 1.65) Inaccuracy. dxc5 was best. } (16. dxc5 Nxc5) 16... h6?! { (1.65 → 2.59) Inaccuracy. Rfe8 was best. } (16... Rfe8 17. Rc1 Bb6 18. c4 dxc4 19. Ng5 f5 20. Nxc4 Qc7 21. dxc5 Bxc5 22. Qd1 h6 23. Bxc5) 17. Qb2?? { (2.59 → 0.64) Blunder. c4 was best. } (17. c4 dxc4) 17... g5?? { (0.64 → 4.64) Blunder. Bd3 was best. } (17... Bd3 18. Rc1) 18. Ne1?? { (4.64 → Mate in 1) Checkmate is now unavoidable. dxc5 was best. } (18. dxc5) 18... Qh2# { Black wins by checkmate. } 0-1