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Puzzles (3 cohencoins award for each match):

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/RTost5Dx"] [Date "2025.11.04"] [White "AVACODOISNOTATOMATO"] [Black "Drew"] [Result "0-1"] [UTCDate "2025.11.04"] [UTCTime "00:19:32"] [WhiteElo "1489"] [BlackElo "1642"] [WhiteRatingDiff "-8"] [BlackRatingDiff "+6"] [WhiteTitle "IM"] [BlackTitle "GM"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A40"] [Opening "Modern Defense"] [Termination "Time forfeit"] [Annotator "cohenchessclub.com"] 1. d4 g6 { A40 Modern Defense } 2. Bf4?! { (0.74 → 0.14) Inaccuracy. e4 was best. } (2. e4 d6 3. Nf3 Bg7 4. h3 Nf6 5. Nc3 O-O 6. Bd3 e5 7. dxe5 dxe5 8. Nxe5 Nxe4) 2... Bg7 3. Nf3 c5 4. e3 d6 5. Nc3 Nd7 6. Qd2?! { (0.32 → -0.26) Inaccuracy. Be2 was best. } (6. Be2) 6... Ngf6 7. O-O-O?! { (-0.11 → -1.09) Inaccuracy. h3 was best. } (7. h3 a6) 7... O-O?! { (-1.09 → -0.26) Inaccuracy. O-O was best. } (7... O-O) 8. Bc4?? { (-0.26 → -1.94) Blunder. h4 was best. } (8. h4 Qa5) 8... a6 9. h4?! { (-1.74 → -2.89) Inaccuracy. Bd5 was best. } (9. Bd5 e6) 9... h5?! { (-2.89 → -1.93) Inaccuracy. b5 was best. } (9... b5) 10. g3? { (-1.93 → -4.01) Mistake. Bd5 was best. } (10. Bd5 Nb6) 10... b5 11. Bb3? { (-3.92 → -7.23) Mistake. Bd5 was best. } (11. Bd5 Rb8 12. dxc5 Nxc5 13. Be5 b4 14. Bxf6 Bxf6 15. Ne4 Nxe4 16. Bxe4 Qa5 17. Kb1 Bg4) 11... c4 12. Bxc4 bxc4 13. Ng5 Nh7?! { (-7.84 → -5.34) Inaccuracy. Rb8 was best. } (13... Rb8) 14. Nge4?! { (-5.34 → -8.07) Inaccuracy. g4 was best. } (14. g4 Ndf6) 14... f5 15. Ng5 e5?? { (-6.57 → -1.17) Blunder. Nxg5 was best. } (15... Nxg5 16. Bxg5) 16. Nxh7?? { (-1.17 → -6.11) Blunder. dxe5 was best. } (16. dxe5 Nxg5) 16... Kxh7 17. Bg5 Bf6?? { (-6.76 → -3.22) Blunder. Qe8 was best. } (17... Qe8 18. f3) 18. dxe5 Bxg5?! { (-3.68 → -2.28) Inaccuracy. Nxe5 was best. } (18... Nxe5 19. e4) 19. hxg5?! { (-2.28 → -3.03) Inaccuracy. hxg5 was best. } (19. hxg5) 19... Nxe5 20. f4 Nf3?? { (-2.66 → 3.21) Blunder. Ng4 was best. } (20... Ng4 21. e4) 21. Qd5 Nxg5? { (3.76 → 7.56) Mistake. Rb8 was best. } (21... Rb8 22. Qxf3) 22. Qxa8 Ne4 23. Qc6 Nxg3 24. Rhg1 Ne2+?! { (6.03 → 9.37) Inaccuracy. h4 was best. } (24... h4 25. Rxd6) 25. Nxe2 Rf6 26. Qxc4 Be6 27. Qxa6 Qc7 28. Rxd6 Bc4 29. Rd7+ Qxd7 30. Qxf6 Qe8 31. Nd4?? { (10.38 → 0.29) Blunder. Kd2 was best. } (31. Kd2 Qf7 32. Qxf7+ Bxf7 33. Nd4 Bd5 34. a4 h4 35. b4 Kh6 36. a5 h3 37. Rg3 Bg2) 31... Qxe3+ 32. Kd1 Qxg1+ 33. Kd2 Qf2+ 34. Kc3 Bxa2?? { (0.80 → 2.68) Blunder. Bg8 was best. } (34... Bg8 35. Qe7+) 35. Qf7+?? { (2.68 → -62.64) Blunder. Qe7+ was best. } (35. Qe7+ Kg8) 35... Bxf7 36. b4?! { (-74.01 → Mate in 11) Checkmate is now unavoidable. Nb3 was best. } (36. Nb3 Qxf4) 36... Qxf4 { Black wins on time. } 0-1
Computer analysisMove timesCrosstableFEN & PGN
Reconnecting