CohenChessClub.com

[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/HMJofqZs"] [Date "2026.10.07"] [White "Leo3"] [Black "Caleb5"] [Result "0-1"] [UTCDate "2026.10.07"] [UTCTime "13:46:13"] [WhiteElo "1215"] [BlackElo "1395"] [WhiteRatingDiff "-19"] [BlackRatingDiff "+12"] [BlackTitle "NM"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A00"] [Opening "Anderssen's Opening"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. a3 { A00 Anderssen's Opening } a6 2. Ra2?! { (0.21 → -0.69) Inaccuracy. d4 was best. } (2. d4 d5) 2... Ra7? { (-0.69 → 0.50) Mistake. e5 was best. } (2... e5 3. c4 d5 4. cxd5 Nf6 5. d3 Nxd5 6. Nf3 Nc6 7. Ra1 Be6 8. Ng5 Bg4 9. h3) 3. b3 b6 4. Nc3?! { (0.35 → -0.38) Inaccuracy. c4 was best. } (4. c4 c5 5. d4 cxd4 6. Qxd4 e6 7. Nc3 d5 8. cxd5 Nf6 9. e4 Bc5 10. Qd1 O-O) 4... Nc6?! { (-0.38 → 0.41) Inaccuracy. d5 was best. } (4... d5 5. d4 Nf6 6. e3 e6 7. Bd3 Nbd7 8. Nf3 c5 9. Ne2 Bb7 10. O-O Bd6 11. c4) 5. Nd5?! { (0.41 → -0.47) Inaccuracy. e4 was best. } (5. e4 e5 6. g3 g6 7. Bg2 Bg7 8. Nge2 Nf6 9. Nd5 O-O 10. O-O d6 11. c4 b5) 5... Nd4?! { (-0.47 → 0.34) Inaccuracy. e6 was best. } (5... e6 6. Ne3 d5 7. d4 Nf6 8. Nf3 Ne4 9. Bb2 a5 10. g3 a4 11. Ra1 axb3 12. cxb3) 6. Nxe7?? { (0.34 → -6.17) Blunder. Bb2 was best. } (6. Bb2 c5) 6... Qxe7 7. Rb2 Nxc2+?? { (-7.43 → 0.08) Blunder. Nf6 was best. } (7... Nf6 8. c3) 8. Qxc2 Nf6 9. d3? { (-0.13 → -1.68) Mistake. b4 was best. } (9. b4 Qd8) 9... Nd5?? { (-1.68 → 0.29) Blunder. Qxa3 was best. } (9... Qxa3 10. e4 Qc5 11. Ne2 Qxc2 12. Rxc2 a5 13. f3 d5 14. g4 dxe4 15. dxe4 Bc5 16. Nf4) 10. e4 Nf6 11. e5?? { (0.36 → -3.58) Blunder. b4 was best. } (11. b4) 11... Ng8?? { (-3.58 → 0.60) Blunder. Qxe5+ was best. } (11... Qxe5+) 12. Kd1?? { (0.60 → -1.38) Blunder. d4 was best. } (12. d4 Qxa3 13. Bd3 Bb4+ 14. Kf1 Qa5 15. Ne2 Ne7 16. Nf4 Qa1 17. Nh5 d6 18. Nxg7+ Kd8) 12... g5?? { (-1.38 → 1.28) Blunder. Qxe5 was best. } (12... Qxe5 13. Nf3) 13. Be2 Nh6? { (0.85 → 2.11) Mistake. Qxe5 was best. } (13... Qxe5 14. Bh5) 14. Bf3?? { (2.11 → 0.37) Blunder. d4 was best. } (14. d4 g4 15. Bd3 Bb7 16. f3 gxf3 17. Nxf3 Qe6 18. b4 Rg8 19. Rf1 b5 20. Rb3 Bd5) 14... Bg7 15. Ba8?? { (0.87 → -5.95) Blunder. d4 was best. } (15. d4 O-O 16. h4 gxh4 17. Be4 d6 18. Bxh7+ Kh8 19. Bd3 dxe5 20. Qe2 Rd8 21. Nf3 h3) 15... O-O?? { (-5.95 → -2.58) Blunder. Rxa8 was best. } (15... Rxa8 16. Qxc7) 16. Bd5?? { (-2.58 → -5.93) Blunder. Be4 was best. } (16. Be4 d5) 16... Bb7?? { (-5.93 → -0.14) Blunder. Qxe5 was best. } (16... Qxe5) 17. Bxb7 Rxb7 18. e6?? { (0.06 → -4.24) Blunder. d4 was best. } (18. d4 f6 19. Nf3 g4 20. Nh4 fxe5 21. Bxh6 Bxh6 22. Nf5 Qe6 23. Nxh6+ Qxh6 24. dxe5 Qe6) 18... Qxe6?! { (-4.24 → -3.02) Inaccuracy. fxe6 was best. } (18... fxe6) 19. Nh3?! { (-3.02 → -4.21) Inaccuracy. Nf3 was best. } (19. Nf3 Bxb2 20. Re1 Qd5 21. Bxb2 f6 22. h4 g4 23. Nd2 Qxg2 24. Qc4+ Kh8 25. Re4 Qxf2) 19... Qe8?? { (-4.21 → 0.58) Blunder. Qg6 was best. } (19... Qg6 20. d4 Nf5 21. Nxg5 Nxd4 22. Qxg6 fxg6 23. Rd2 c5 24. Bb2 Nxb3 25. Bxg7 Kxg7 26. Rd6) 20. Kd2?? { (0.58 → -3.12) Blunder. Re1 was best. } (20. Re1 Qc8 21. Nxg5 d6 22. Qc6 Rb8 23. Rbe2 Qf5 24. Qc2 Qg6 25. g4 Nxg4 26. Rg1 Ne5) 20... Bxb2?! { (-3.12 → -2.39) Inaccuracy. Qe6 was best. } (20... Qe6 21. Nxg5) 21. Qxb2?? { (-2.39 → -5.88) Blunder. Bxb2 was best. } (21. Bxb2 f6) 21... Nf5?? { (-5.88 → 2.02) Blunder. f6 was best. } (21... f6) 22. Kc2?? { (2.02 → -6.38) Blunder. Re1 was best. } (22. Re1) 22... Nd4+?? { (-6.38 → 6.69) Blunder. f6 was best. } (22... f6 23. Kb1 c5 24. f4 g4 25. Nf2 d5 26. Nxg4 Qg6 27. b4 Re7 28. h3 h5 29. Qb3) 23. Kd2?? { (6.69 → Mate in 7) Checkmate is now unavoidable. Qxd4 was best. } (23. Qxd4 Qe7 24. Nxg5 Qc5+ 25. Qxc5 bxc5 26. Ne4 Rb6 27. Be3 f5 28. Nc3 f4 29. Bxc5 Rf5) 23... Nxb3+?? { (Mate in 7 → 0.48) Lost forced checkmate sequence. Qe2+ was best. } (23... Qe2+ 24. Kc3 Nb5+ 25. Kb4 Qxd3 26. Be3 Qe4+ 27. Bd4 c5+ 28. Ka4 Nc3+ 29. Qxc3 Qc6#) 24. Qxb3 b5?? { (0.53 → 4.39) Blunder. Qe6 was best. } (24... Qe6) 25. Qxb5?? { (4.39 → -10.43) Blunder. Nxg5 was best. } (25. Nxg5) 25... Rxb5 26. a4 Rb8 27. d4 f5 28. d5 Rb4 29. a5?! { (-12.18 → Mate in 6) Checkmate is now unavoidable. Re1 was best. } (29. Re1) 29... Ra4?! { (Mate in 6 → -13.42) Lost forced checkmate sequence. Qe4 was best. } (29... Qe4 30. Nf4 Rd4+ 31. Kc3 Rc4+ 32. Kd2 Re8 33. Ne6 Rc2+ 34. Kd1 Qe2#) 30. d6?! { (-13.42 → Mate in 6) Checkmate is now unavoidable. Re1 was best. } (30. Re1 Ra2+) 30... Rxa5 31. dxc7 Rc5?! { (Mate in 7 → -15.97) Lost forced checkmate sequence. Ra2+ was best. } (31... Ra2+ 32. Kc3 Qe5+ 33. Kb3 Qd5+ 34. Kc3 Qc6+ 35. Kd4 Rc2 36. Nxg5 Qc3+ 37. Kd5 Qc5#) 32. c8=Q?! { (-15.97 → Mate in 6) Checkmate is now unavoidable. Kd1 was best. } (32. Kd1 Qe4) 32... Rxc8?! { (Mate in 6 → -12.37) Lost forced checkmate sequence. Rd5+ was best. } (32... Rd5+ 33. Kc3 Qxc8+ 34. Kb2 Rb5+ 35. Ka1 Qc3+ 36. Ka2 Qc2+ 37. Ka1 Rb1#) 33. Ba3?! { (-12.37 → Mate in 5) Checkmate is now unavoidable. Re1 was best. } (33. Re1 Qd8) 33... Rc5? { (Mate in 5 → -7.87) Lost forced checkmate sequence. Qe4 was best. } (33... Qe4 34. Bc5 Rxc5 35. Nf4 Rc2+ 36. Kd1 gxf4 37. Re1 Qd3#) 34. Bxc5 a5 35. Ba7 Qa8 36. Bb6?! { (-10.30 → Mate in 13) Checkmate is now unavoidable. Nf4 was best. } (36. Nf4 gxf4) 36... Qxg2? { (Mate in 13 → -9.63) Lost forced checkmate sequence. Qd5+ was best. } (36... Qd5+ 37. Ke2 Re8+ 38. Be3 Qc4+ 39. Kd2 Rb8 40. Bb6 Qd5+ 41. Ke2 Rxb6 42. Rc1 Qe4+ 43. Kf1) 37. Bxa5? { (-9.63 → Mate in 9) Checkmate is now unavoidable. Rc1 was best. } (37. Rc1 Rb8) 37... Qxh1?! { (Mate in 9 → -14.80) Lost forced checkmate sequence. Qd5+ was best. } (37... Qd5+ 38. Ke2 Re8+ 39. Kf1 Qd1+ 40. Kg2 Qg4+ 41. Kf1 Qxh3+ 42. Kg1 Rb8 43. f4 Rb2 44. Bd2) 38. Nxg5?! { (-14.80 → Mate in 8) Checkmate is now unavoidable. Bc7 was best. } (38. Bc7 Qd5+) 38... Qxh2?! { (Mate in 8 → -68.07) Lost forced checkmate sequence. Qd5+ was best. } (38... Qd5+ 39. Kc2 Qxa5 40. Nf3 Rc8+ 41. Kd3 Qd5+ 42. Nd4 Qe4+ 43. Kd2 Qxd4+ 44. Ke1 Rc2 45. Kf1) 39. Nxh7?! { (-68.07 → Mate in 8) Checkmate is now unavoidable. Bb6 was best. } (39. Bb6 Qd6+) 39... Qxh7?! { (Mate in 8 → -69.53) Lost forced checkmate sequence. Qxf2+ was best. } (39... Qxf2+ 40. Kd3 Kxh7 41. Kc4 Rc8+ 42. Kb3 Qd4 43. Bb4 Qc4+ 44. Ka3 Rb8 45. Kb2 Rxb4+ 46. Ka3) 40. Bd8?! { (-69.53 → Mate in 7) Checkmate is now unavoidable. f3 was best. } (40. f3 Qe7) 40... Rxd8 41. Ke3 Qh3+ 42. Kf4 Qf1 43. Kxf5 Qxf2+ 44. Kg4 d5 45. Kh3 d4 46. Kg4 d3 47. Kh3 d2 48. Kg4 d1=Q+ 49. Kh3 Qf4 50. Kg2 Qd3 51. Kg1 Qfd2 52. Kh1 Qb1# { Black wins by checkmate. } 0-1