[Event "Rated classical game"] [Site "https://lichess.org/UDhKVBG8"] [Date "2022.04.10"] [White "Olgaigrek"] [Black "JIANGHAOCHEN"] [Result "0-1"] [UTCDate "2022.04.10"] [UTCTime "03:54:33"] [WhiteElo "1898"] [BlackElo "1765"] [WhiteRatingDiff "-4"] [BlackRatingDiff "+298"] [Variant "Standard"] [TimeControl "1800+30"] [ECO "E91"] [Opening "King's Indian Defense: Orthodox Variation"] [Termination "Normal"] [Annotator "lichess.org"] 1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. Nc3 O-O 5. e4 d6 6. Be2 { E91 King's Indian Defense: Orthodox Variation } c5 7. O-O cxd4 8. Nxd4 Nc6 9. Be3 Be6 10. f3?! { (1.35 → 0.67) Inaccuracy. Nxe6 was best. } (10. Nxe6 fxe6) 10... Rc8 11. Rc1?? { (1.19 → -1.18) Blunder. Nxe6 was best. } (11. Nxe6) 11... Nxd4 12. Qxd4 Ng4 13. Qxa7 Nxe3 14. Qxe3 Qa5? { (-0.95 → 0.15) Mistake. Bxc4 was best. } (14... Bxc4 15. Bxc4 Rxc4 16. Rfd1 Rc6 17. b3 e6 18. a4 Re8 19. Nb5 d5 20. e5 Bf8 21. Kh1) 15. a3?? { (0.15 → -2.11) Blunder. b3 was best. } (15. b3 Bxc3) 15... Bxc4 16. Bxc4 Rxc4 17. Nd5?? { (-2.03 → -5.49) Blunder. Rfd1 was best. } (17. Rfd1 Rfc8 18. Rd5 b5 19. h3 Bxc3 20. Rxc3 Rxc3 21. bxc3 Qxa3 22. Rxb5 Rxc3 23. Qd2 Qa7+) 17... Bd4 18. Nxe7+ Kh8 19. Rxc4 Bxe3+ 20. Kh1 Qb5 21. Rc2?? { (-6.08 → Mate in 1) Checkmate is now unavoidable. b3 was best. } (21. b3 Qxb3) 21... Qxf1# { Black wins by checkmate. } 0-1