FEN
[Event " MrCohenOS Arena"]
[Site "https://cohenchessclub.com/xXuBWUBy"]
[Date "2025.10.03"]
[White "Nathan4"]
[Black "LEO2"]
[Result "0-1"]
[UTCDate "2025.10.03"]
[UTCTime "23:16:16"]
[WhiteElo "1306"]
[BlackElo "1407"]
[WhiteRatingDiff "-7"]
[BlackRatingDiff "+10"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[Variant "Standard"]
[TimeControl "420+2"]
[ECO "B30"]
[Opening "Sicilian Defense: Old Sicilian"]
[Termination "Normal"]
[Annotator "cohenchessclub.com"]
1. e4 c5 2. Nf3 Nc6 { B30 Sicilian Defense: Old Sicilian } 3. Bc4 d6 4. O-O e5? { (0.18 → 1.25) Mistake. Nf6 was best. } (4... Nf6 5. Re1 Bg4 6. h3 Bxf3 7. Qxf3 a6 8. Qd1 e6 9. c3 Be7 10. Bb3 O-O 11. d4) 5. Nc3?! { (1.25 → 0.41) Inaccuracy. c3 was best. } (5. c3 Qb6 6. Ng5 Nd8 7. d4 cxd4 8. cxd4 exd4 9. b4 Be7 10. Qb3 Bxg5 11. Bxg5 Ne7) 5... Nf6?? { (0.41 → 3.11) Blunder. Be7 was best. } (5... Be7 6. Nd5 Nf6 7. Nxf6+ Bxf6 8. c3 O-O 9. h3 Rb8 10. a4 Kh8 11. d3 Be7 12. Ne1) 6. d3?? { (3.11 → 0.32) Blunder. Ng5 was best. } (6. Ng5 d5) 6... Bg4?! { (0.32 → 1.23) Inaccuracy. Be7 was best. } (6... Be7 7. Nd5 Nxd5 8. Bxd5 O-O 9. c3 Be6 10. Bxe6 fxe6 11. b4 cxb4 12. cxb4 Qd7 13. b5) 7. Bg5?! { (1.23 → 0.42) Inaccuracy. h3 was best. } (7. h3) 7... Bxf3? { (0.42 → 1.72) Mistake. Be7 was best. } (7... Be7 8. h3 Be6 9. Bxf6 Bxf6 10. Nd5 g6 11. a3 O-O 12. c3 Bg7 13. Ne3 a5 14. b4) 8. Qxf3 h6?? { (1.78 → 4.68) Blunder. Be7 was best. } (8... Be7 9. Bxf6) 9. Bh4?? { (4.68 → 0.00) Blunder. Bxf6 was best. } (9. Bxf6) 9... g5 10. Bg3 Nd4? { (0.08 → 1.27) Mistake. h5 was best. } (10... h5 11. Nd5) 11. Qf5?? { (1.27 → -7.48) Blunder. Qd1 was best. } (11. Qd1) 11... Nxf5 12. exf5 Ng4?? { (-7.69 → -0.29) Blunder. Bg7 was best. } (12... Bg7 13. h3 Rb8 14. Nd5 b5 15. Bb3 Qd7 16. Nxf6+ Bxf6 17. a4 b4 18. Bd5 Qxf5 19. Bc6+) 13. Bd5?? { (-0.29 → -7.39) Blunder. Bb5+ was best. } (13. Bb5+ Qd7) 13... Bg7 14. Bxb7 Rb8 15. Bc6+ Kf8 16. Nd5 e4 17. dxe4 Bxb2 18. Rab1 Nf6 19. Nxf6 Qxf6 20. Rfd1 h5 21. Bxd6+ Kg8?? { (-6.38 → -1.55) Blunder. Kg7 was best. } (21... Kg7 22. h4 gxh4 23. Bxb8 Rxb8 24. Bd5 Qc3 25. a3 Qxc2 26. Rf1 c4 27. e5 Bxe5 28. Rxb8) 22. Bd7?? { (-1.55 → -6.55) Blunder. Bxb8 was best. } (22. Bxb8 Kg7 23. Rd6 Qc3 24. Bxa7 Rh6 25. Rxh6 Qxc2 26. Rf1 Kxh6 27. a4 Bd4 28. a5 h4) 22... Rb7 23. Bc8 Rb5 24. Ba6 Ra5 25. Rxb2 Qxb2 26. Bc4 Qxc2 27. Bb3 Qe2 28. Be5 c4?? { (-8.27 → Mate in 2) Checkmate is now unavoidable. Kh7 was best. } (28... Kh7 29. Bxh8 c4 30. Rf1 cxb3 31. Bc3 Rxa2 32. e5 Qxf1+ 33. Kxf1 Kg8 34. e6 fxe6 35. fxe6) 29. Bxh8?? { (Mate in 2 → -9.07) Lost forced checkmate sequence. Rd8+ was best. } (29. Rd8+ Kh7 30. Rxh8#) 29... cxb3 30. axb3? { (-8.83 → Mate in 1) Checkmate is now unavoidable. Rc1 was best. } (30. Rc1 Rc5) 30... Qxd1# { Black wins by checkmate. } 0-1