[Event "ISP USA CANADA Senior 2021 Team Battle"] [Site "https://lichess.org/kkLtBKXq"] [Date "2021.03.25"] [White "vincenttan1"] [Black "Gurman_Rowntree"] [Result "0-1"] [UTCDate "2021.03.25"] [UTCTime "18:02:24"] [WhiteElo "1017"] [BlackElo "1183"] [WhiteRatingDiff "-49"] [BlackRatingDiff "+50"] [Variant "Standard"] [TimeControl "180+2"] [ECO "A01"] [Opening "Nimzo-Larsen Attack"] [Termination "Normal"] [Annotator "lichess.org"] 1. b3 { A01 Nimzo-Larsen Attack } h5 2. c4 g6 3. e3 Bg7 4. f4?? { (0.08 → -6.17) Blunder. d4 was best. } (4. d4 c5) 4... Bxa1 5. h3 a5 6. Bb2?! { (-6.10 → -10.90) Inaccuracy. d4 was best. } (6. d4 Nf6) 6... Bxb2 7. Qc2 Bg7 8. Qd1 d5 9. Na3 dxc4 10. Nxc4 Be6 11. Nxa5 Rxa5 12. a3 Rxa3 13. Ne2 Bxb3 14. Nd4 Bxd1 15. Kxd1 Ra1+ 16. Ke2 Bxd4 17. exd4?! { (-27.32 → Mate in 8) Checkmate is now unavoidable. Kf3 was best. } (17. Kf3 Nc6 18. Kg3 Bb6 19. d4 Kf8 20. Bb5 Rxh1 21. Bxc6 Ba5 22. Bxb7 Rf1 23. Bf3 h4+) 17... Qxd4 18. Kf3 Qd3+?! { (Mate in 7 → -20.44) Lost forced checkmate sequence. Ra3+ was best. } (18... Ra3+ 19. d3 Nf6 20. Rg1 Qxg1 21. f5 Qxf1+ 22. Kg3 h4+ 23. Kh2 Ra1 24. g3 Qh1#) 19. Kf2?! { (-20.44 → Mate in 6) Checkmate is now unavoidable. Bxd3 was best. } (19. Bxd3 Rxh1) 19... Qxd2+ 20. Kg3 Ra3+ 21. Kh4 Qxf4+ 22. g4 Ra5 23. Rg1 hxg4# { Black wins by checkmate. } 0-1