[Event "647th PRIZE CHESSATHON"] [Site "https://lichess.org/zcQtkuWs"] [Date "2022.04.09"] [White "oleksiy2"] [Black "Parth0512"] [Result "1-0"] [UTCDate "2022.04.09"] [UTCTime "17:20:34"] [WhiteElo "2179"] [BlackElo "2093"] [WhiteRatingDiff "+4"] [BlackRatingDiff "-6"] [Variant "Standard"] [TimeControl "600+5"] [ECO "A43"] [Opening "Benoni Defense: Old Benoni"] [Termination "Normal"] [Annotator "lichess.org"] 1. d4 c5?! { (0.30 → 0.87) Inaccuracy. Nf6 was best. } { A43 Benoni Defense: Old Benoni } (1... Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. cxd5 exd5 6. Bg5) 2. c3?! { (0.87 → 0.01) Inaccuracy. d5 was best. } (2. d5 Nf6 3. Nc3 e6 4. e4 d6 5. Bc4 Be7 6. Nge2 O-O) 2... cxd4 3. cxd4 d5 4. e3 Nf6 { Black offers draw } 5. Nc3 Nc6 6. Nf3 e6 7. Bb5 Bd6 8. O-O O-O 9. Qe2 Ne4 10. Nxe4 dxe4 11. Nd2 f5 12. f4?! { (0.00 → -0.90) Inaccuracy. Nc4 was best. } (12. Nc4 Bc7 13. Rd1 Qh4 14. g3 Qh3 15. b3 Rf6 16. Bxc6 bxc6 17. Rd2 Ba6 18. Qf1 Qh5) 12... exf3?! { (-0.90 → -0.24) Inaccuracy. Nb4 was best. } (12... Nb4 13. a3 Nd5 14. Nb1 a6 15. Bc4 Bd7 16. Bd2 Kh8 17. Nc3 Bc6 18. Bxd5 exd5 19. b4) 13. Nxf3 Rf6? { (-0.30 → 1.26) Mistake. a6 was best. } (13... a6) 14. a3?! { (1.26 → 0.21) Inaccuracy. e4 was best. } (14. e4 Rf8) 14... Rg6?! { (0.21 → 0.91) Inaccuracy. Bd7 was best. } (14... Bd7) 15. Bd2 a6 16. Ba4? { (1.08 → -0.03) Mistake. Bd3 was best. } (16. Bd3) 16... b5 17. Bb3 Qc7?? { (0.11 → 3.10) Blunder. Bb7 was best. } (17... Bb7) 18. Rac1 Bb7 19. d5 exd5 20. Bxd5+ Kh8 21. h4?? { (3.07 → -0.13) Blunder. e4 was best. } (21. e4 Qe7) 21... Rg3?? { (-0.13 → 6.30) Blunder. Qd7 was best. } (21... Qd7 22. h5 Rg4 23. h6 Nd4 24. Nxd4 Bxd5 25. Nxf5 Rxg2+ 26. Qxg2 Bxg2 27. hxg7+ Kg8 28. Nh6+) 22. Ng5 Rf8 23. Ne6?! { (7.81 → 5.16) Inaccuracy. Nxh7 was best. } (23. Nxh7 Nd4) 23... Qb6?! { (5.16 → 7.38) Inaccuracy. Qf7 was best. } (23... Qf7 24. Bxc6) 24. Nxf8 Bxf8 25. Rxf5 Bc5 26. b4 Bxe3+ 27. Bxe3 Qd8 28. Qf2 h6 29. Qxg3 Ne7?! { (20.24 → Mate in 8) Checkmate is now unavoidable. Ne5 was best. } (29... Ne5 30. Bxb7) 30. Bxb7?! { (Mate in 8 → 12.92) Lost forced checkmate sequence. Rf7 was best. } (30. Rf7 Nf5 31. Rxf5 Bxd5 32. Bd4 Qe7 33. Rc7 Qg5 34. Rf8+ Bg8 35. hxg5 Kh7 36. Rxg7+ Kh8) 30... Nxf5 31. Qe5 Ne7 32. Bd4 Qf8 33. Rf1 Qg8 34. Qxe7 h5 35. Rf8 Kh7 36. Rxg8 Kh6 37. Qxg7# { White wins by checkmate. } 1-0