[Event "84. Sparta Grand Prix"] [Site "https://lichess.org/0e3iJpi2"] [Date "2022.01.18"] [White "Nixalsverdrus"] [Black "cosifan"] [Result "1-0"] [UTCDate "2022.01.18"] [UTCTime "20:15:09"] [WhiteElo "2317"] [BlackElo "1876"] [WhiteRatingDiff "+5"] [BlackRatingDiff "-1"] [Variant "Standard"] [TimeControl "600+1"] [ECO "D31"] [Opening "Queen's Gambit Declined: Queen's Knight Variation"] [Termination "Normal"] [Annotator "lichess.org"] 1. d4 d5 2. c4 e6 3. Nc3 { D31 Queen's Gambit Declined: Queen's Knight Variation } h6 4. cxd5 exd5 5. Bf4 Nf6 6. e3 a6 7. Bd3 Bg4 8. f3 Be6 9. Nge2 Bd6 10. O-O Nh5?! { (0.65 → 1.59) Inaccuracy. c5 was best. } (10... c5 11. Bxd6 Qxd6 12. Qa4+ Nc6 13. Qa3 Nb4 14. Nb5 Qb6 15. dxc5 Qxc5 16. Nc7+ Qxc7 17. Qxb4) 11. Bxd6 Qxd6 12. e4 Nf4?? { (1.96 → 4.36) Blunder. dxe4 was best. } (12... dxe4 13. fxe4) 13. e5?? { (4.36 → 1.25) Blunder. Nxf4 was best. } (13. Nxf4) 13... Nxe2+ 14. Qxe2 Qe7? { (0.86 → 2.61) Mistake. Qb6 was best. } (14... Qb6) 15. f4 Nc6? { (2.37 → 3.88) Mistake. g6 was best. } (15... g6 16. f5 gxf5 17. Bxf5 h5 18. Qd3 Nc6 19. Bxe6 Qxe6 20. Rad1 Rg8 21. Rf6 Qg4 22. Rd2) 16. Qf2?? { (3.88 → 1.71) Blunder. f5 was best. } (16. f5 Nxd4) 16... f5 17. a3 O-O-O?! { (2.09 → 3.12) Inaccuracy. Qd7 was best. } (17... Qd7) 18. b4?! { (3.12 → 2.42) Inaccuracy. Na4 was best. } (18. Na4) 18... Na7?! { (2.42 → 3.82) Inaccuracy. g5 was best. } (18... g5 19. Rfc1) 19. Na4 g5 20. Nc5 gxf4 21. Qxf4?! { (4.09 → 3.13) Inaccuracy. b5 was best. } (21. b5 axb5 22. Qb2 b6 23. a4 b4 24. Nxe6 Qxe6 25. Qxb4 Kb7 26. Rxf4 Nc6 27. Qc3 Rhf8) 21... Qg5?? { (3.13 → 8.44) Blunder. Kb8 was best. } (21... Kb8 22. Bxf5 Bxf5 23. Qxf5 Nc6 24. Qd3 Rhf8 25. e6 Ka7 26. b5 Na5 27. a4 Nc4 28. Qg3) 22. Nxe6 Qxf4 23. Rxf4 Rdg8 24. Bxf5 Kb8 25. Rc1 Nc6 26. Nc5 h5 27. Nxa6+ bxa6 28. Rxc6 Kb7 29. Rg6 Rf8 30. Rf6 Rfg8 31. Be6 Rg5 32. Bxd5+ Ka7 33. Rf7 Kb6?! { (11.02 → Mate in 6) Checkmate is now unavoidable. Rc8 was best. } (33... Rc8 34. Be6) 34. a4?! { (Mate in 6 → 10.37) Lost forced checkmate sequence. R4f6+ was best. } (34. R4f6+ Ka7 35. Rxc7+ Kb8 36. Rb7+ Kc8 37. Rxa6 Rxg2+ 38. Bxg2 Re8 39. Ra8#) 34... Rhg8?! { (10.37 → Mate in 11) Checkmate is now unavoidable. Rg6 was best. } (34... Rg6 35. R4f6+) 35. R4f6+ Ka7 36. Rxc7+ Kb8 37. Rb7+ Kc8 38. Ra7 h4 39. Rff7 Rxg2+ 40. Bxg2 h3 41. Ra8# { White wins by checkmate. } 1-0