CohenChessClub.com

[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/PjBhMK4n"] [Date "2026.09.23"] [White "Samuel"] [Black "Mason6"] [Result "1/2-1/2"] [UTCDate "2026.09.23"] [UTCTime "13:33:46"] [WhiteElo "1358"] [BlackElo "1260"] [WhiteRatingDiff "-13"] [BlackRatingDiff "+17"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A40"] [Opening "Polish Defense"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. d4 b5?! { (0.43 → 1.41) Inaccuracy. Nf6 was best. } { A40 Polish Defense } (1... Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 h6 6. Bxf6 Bxc3+ 7. bxc3 Qxf6 8. cxd5) 2. c3?! { (1.41 → 0.62) Inaccuracy. e4 was best. } (2. e4 Bb7 3. Nd2 a6 4. Ngf3 e6 5. a4 b4 6. Bd3 c5 7. d5 exd5 8. O-O dxe4) 2... a5?! { (0.62 → 1.46) Inaccuracy. Bb7 was best. } (2... Bb7) 3. c4?? { (1.46 → -0.12) Blunder. e4 was best. } (3. e4) 3... bxc4 4. d5? { (-0.14 → -1.26) Mistake. e4 was best. } (4. e4 Ba6 5. Nd2 d5 6. exd5 Qxd5 7. Be2 c3 8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. bxc3 e6) 4... d6?? { (-1.26 → 0.36) Blunder. e6 was best. } (4... e6) 5. e3?! { (0.36 → -0.42) Inaccuracy. e4 was best. } (5. e4 g6) 5... f5?? { (-0.42 → 1.41) Blunder. Ba6 was best. } (5... Ba6) 6. h3? { (1.41 → -0.09) Mistake. Bxc4 was best. } (6. Bxc4 g6) 6... Nh6?? { (-0.09 → 1.75) Blunder. e5 was best. } (6... e5 7. Bxc4 Be7 8. Nf3 Nf6 9. Nc3 Nbd7 10. b3 O-O 11. O-O Kh8 12. Ba3 Nb6 13. Ng5) 7. h4?? { (1.75 → -0.64) Blunder. Bxc4 was best. } (7. Bxc4 g6 8. Nf3 Bg7 9. Nc3 O-O 10. Nd4 Bd7 11. O-O Na6 12. b3 g5 13. Bb2 Nc5) 7... Ng8?? { (-0.64 → 1.37) Blunder. e5 was best. } (7... e5) 8. Bxc4 c5?! { (1.46 → 2.45) Inaccuracy. Nf6 was best. } (8... Nf6 9. Nc3 c6 10. Nf3 e6 11. dxe6 d5 12. Bd3 Bxe6 13. Nd4 Bd7 14. Nxf5 Na6 15. O-O) 9. Rh3? { (2.45 → 1.04) Mistake. Nc3 was best. } (9. Nc3) 9... h5? { (1.04 → 2.34) Mistake. Nd7 was best. } (9... Nd7 10. Nc3 Nb6 11. Bb5+ Bd7 12. Bxd7+ Qxd7 13. h5 Nf6 14. Nge2 Qb7 15. Nf4 Rg8 16. Qd3) 10. g3?? { (2.34 → -0.21) Blunder. Ne2 was best. } (10. Ne2) 10... e5?? { (-0.21 → 2.45) Blunder. g6 was best. } (10... g6) 11. Nf3?? { (2.45 → -0.98) Blunder. dxe6 was best. } (11. dxe6) 11... Be6?? { (-0.98 → 10.47) Blunder. Be7 was best. } (11... Be7 12. Rh1) 12. Nxe5?? { (10.47 → 2.48) Blunder. dxe6 was best. } (12. dxe6) 12... f4?? { (2.48 → 10.71) Blunder. dxe5 was best. } (12... dxe5 13. dxe6 Qxd1+ 14. Kxd1 Nf6 15. Bd2 Bd6 16. Nc3 e4 17. Nd5 Nxd5 18. Bxd5 Ra6 19. Bc4) 13. exf4?? { (10.71 → -2.22) Blunder. dxe6 was best. } (13. dxe6) 13... Bxh3 14. g4?? { (-1.89 → -6.30) Blunder. Qe2 was best. } (14. Qe2 Be7) 14... dxe5?! { (-6.30 → -4.67) Inaccuracy. Qe7 was best. } (14... Qe7) 15. fxe5 Rh6?? { (-4.69 → -1.37) Blunder. Qxh4 was best. } (15... Qxh4) 16. gxh5?? { (-1.37 → -6.61) Blunder. Bb5+ was best. } (16. Bb5+ Nd7 17. e6 Qxh4 18. Bxd7+ Kd8 19. Qb3 Bd6 20. Qb6+ Ke7 21. Bb5 Rc8 22. Qb7+ Rc7) 16... Rxh5?? { (-6.61 → 8.35) Blunder. Qxh4 was best. } (16... Qxh4 17. Bb5+) 17. Qxh5+ Kd7 18. Qd1?? { (8.10 → 2.75) Blunder. Nc3 was best. } (18. Nc3 Kc8) 18... Ke8?? { (2.75 → 10.03) Blunder. Qxh4 was best. } (18... Qxh4) 19. e6?? { (10.03 → 1.85) Blunder. Bb5+ was best. } (19. Bb5+ Qd7) 19... Ra6?? { (1.85 → Mate in 4) Checkmate is now unavoidable. Qxh4 was best. } (19... Qxh4 20. Qa4+ Kd8 21. Be3 Nf6 22. Nd2 Bg4 23. Qb5 Nbd7 24. exd7 Nxd7 25. Rc1 Qh1+ 26. Bf1) 20. Bxa6? { (Mate in 4 → 8.75) Lost forced checkmate sequence. Qh5+ was best. } (20. Qh5+ g6 21. Qxg6+ Ke7 22. Qf7+ Kd6 23. Bf4#) 20... Nxa6? { (8.75 → Mate in 10) Checkmate is now unavoidable. Qxh4 was best. } (20... Qxh4 21. Qf3 Nf6 22. Bb5+ Kd8 23. Bf4 Bg4 24. Qg2 Bh5 25. Bg5 Qb4+ 26. Nc3 Bd6 27. Qh3) 21. h5?? { (Mate in 10 → 4.00) Lost forced checkmate sequence. Qh5+ was best. } (21. Qh5+ Ke7 22. Qf7+ Kd6 23. Bf4+ Kxd5 24. e7+ Ke4 25. Nc3+ Kf3 26. exd8=Q Nc7 27. Qd3+ Kg2) 21... Nf6 22. Be3?? { (4.48 → -1.60) Blunder. Nc3 was best. } (22. Nc3 Nb4 23. Qa4+ Ke7 24. Bg5 Bf5 25. O-O-O Nd3+ 26. Rxd3 Bxd3 27. Qc6 Qd6 28. Qb7+ Kd8) 22... Nxh5?? { (-1.60 → Mate in 5) Checkmate is now unavoidable. Qxd5 was best. } (22... Qxd5) 23. Bxc5?? { (Mate in 5 → 1.98) Lost forced checkmate sequence. Qxh5+ was best. } (23. Qxh5+ g6 24. Qxg6+ Ke7 25. Bf4 Qxd5 26. Qf7+ Kd8 27. Qxf8#) 23... Nxc5?? { (1.98 → 8.34) Blunder. Qh4 was best. } (23... Qh4 24. Be3) 24. f4?? { (8.34 → Mate in 11) Checkmate is now unavoidable. Qxh5+ was best. } (24. Qxh5+ Ke7) 24... Nxf4?! { (Mate in 11 → -11.32) Lost forced checkmate sequence. Qh4+ was best. } (24... Qh4+ 25. Ke2 Qg4+ 26. Ke1 Qg3+ 27. Kd2 Qxf4+ 28. Kc3 g6 29. Qd2 Qf3+ 30. Kc2 Bf5+ 31. Kc1) 25. Qc1?! { (-11.32 → Mate in 6) Checkmate is now unavoidable. Qd4 was best. } (25. Qd4 Qh4+) 25... Nxd5?! { (Mate in 6 → -11.92) Lost forced checkmate sequence. Qh4+ was best. } (25... Qh4+ 26. Kd1 Bg4+ 27. Kd2 Qf2+ 28. Kc3 Nxd5+ 29. Kc4 Qe2+ 30. Kxd5 Qe4#) 26. Qxc5?! { (-11.92 → Mate in 8) Checkmate is now unavoidable. Qc4 was best. } (26. Qc4 Qd6 27. Nc3 Qg3+ 28. Kd2 Qg5+ 29. Ke1 Nxc3 30. bxc3 Bd6 31. Qe2 Bg4 32. Qxg4 Qxg4) 26... Bxc5 27. b3 g5 28. Nc3 Nxc3 29. b4 Bxb4 30. Kf2 g4 31. Rh1 Nxa2 32. Rg1 a4 33. Rxg4 Bxg4 34. Kg3 Bxe6 35. Kf4 Qd4+ 36. Kg5 Qe3+ 37. Kf6 Bd6 38. Kg7 Qe5+ 39. Kg6 a3 40. Kh6 Qf6+ 41. Kh7 Bf7 { Draw by stalemate. } 1/2-1/2