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Puzzles (3 cohencoins award for each match):

Puzzle YF2MQ: 470

Puzzle 3G0Df: 999999999

GM Nathan4 (1339) +8
FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/YQE51mVj"] [Date "2026.01.31"] [White "Nathan4"] [Black "Robbie3"] [Result "1-0"] [UTCDate "2026.01.31"] [UTCTime "00:27:23"] [WhiteElo "1339"] [BlackElo "1240"] [WhiteRatingDiff "+8"] [BlackRatingDiff "-8"] [WhiteTitle "GM"] [BlackTitle "NM"] [Variant "Standard"] [TimeControl "420+2"] [ECO "C42"] [Opening "Russian Game"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 e5 2. Nf3 Nf6 3. Nxe5 { C42 Russian Game } Bd6? { (0.69 → 2.00) Mistake. d6 was best. } (3... d6 4. Nf3) 4. Nf3? { (2.00 → 0.86) Mistake. Nc4 was best. } (4. Nc4 Nxe4) 4... Nxe4 5. Bd3 Nf6 6. O-O O-O 7. Nc3?! { (0.37 → -0.17) Inaccuracy. c4 was best. } (7. c4) 7... b6?! { (-0.17 → 0.62) Inaccuracy. Re8 was best. } (7... Re8 8. Be2 Bf8 9. d4 d5 10. Re1 Bf5 11. Bd3 Rxe1+ 12. Nxe1 Bg6 13. Ne2 Nbd7 14. c3) 8. Be4?! { (0.62 → -0.27) Inaccuracy. Re1 was best. } (8. Re1 Bb7 9. Bf1 Re8 10. Rxe8+ Nxe8 11. d4 h6 12. Nb5 Bf8 13. c4 d5 14. cxd5 Bxd5) 8... Nxe4 9. Nxe4 Ba6?! { (-0.31 → 0.45) Inaccuracy. Bb4 was best. } (9... Bb4 10. Re1 d5 11. Nc3 Nc6 12. a3 Bd6 13. d3 Bg4 14. h3 Bxf3 15. Qxf3 Nd4 16. Qd1) 10. d3 Be7 11. Bg5?! { (0.00 → -0.51) Inaccuracy. Re1 was best. } (11. Re1 Nc6 12. d4 d5 13. Ng3 Qd7 14. Bf4 f6 15. h4 Rae8 16. h5 Rf7 17. Nh4 Bf8) 11... d5?! { (-0.51 → 0.11) Inaccuracy. Bxg5 was best. } (11... Bxg5 12. Nexg5) 12. Bxe7 Qxe7 13. Nc3 c6?! { (0.01 → 0.56) Inaccuracy. Qd7 was best. } (13... Qd7) 14. Qe2?! { (0.56 → 0.00) Inaccuracy. Re1 was best. } (14. Re1 Qd6) 14... Qxe2 15. Nxe2 Re8 16. Ned4?! { (0.33 → -0.43) Inaccuracy. Rfe1 was best. } (16. Rfe1 Kf8 17. Nf4 Rxe1+ 18. Rxe1 Nd7 19. a4 Bb7 20. a5 bxa5 21. Ra1 a4 22. Rxa4 a5) 16... c5 17. Nf5 d4 18. c4?? { (-0.49 → -4.55) Blunder. Rfe1 was best. } (18. Rfe1 Nc6 19. a3 Kf8 20. Kf1 Rxe1+ 21. Kxe1 Bc8 22. Ng3 Be6 23. Ng5 Bd5 24. Nxh7+ Kg8) 18... Bc8?? { (-4.55 → -0.60) Blunder. dxc3 was best. } (18... dxc3 19. Rfe1 Nc6 20. bxc3 Bxd3 21. Ne3 Rad8 22. h4 Kf8 23. Red1 Be2 24. Rxd8 Nxd8 25. h5) 19. Nd6 Rd8 20. Nxc8 Rxc8 21. Rfe1 Nc6 22. a3 Rd8 23. b4?! { (0.22 → -0.48) Inaccuracy. Ne5 was best. } (23. Ne5 Nxe5 24. Rxe5 f6 25. Re7 Kf8 26. Rb7 Rdb8 27. Rc7 Rc8 28. Rd7 Rd8 29. Rxd8+ Rxd8) 23... cxb4 24. axb4?? { (-0.62 → -2.31) Blunder. Ne5 was best. } (24. Ne5) 24... Nxb4 25. Ra4?? { (-2.59 → -6.82) Blunder. Re7 was best. } (25. Re7 Nxd3) 25... Nc6?? { (-6.82 → -0.90) Blunder. Nxd3 was best. } (25... Nxd3 26. Rb1 Nc5 27. Ra2 d3 28. Nd2 Re8 29. Ra3 Re2 30. Rd1 Rae8 31. Kf1 a5 32. Nb3) 26. Ne5?? { (-0.90 → -2.80) Blunder. Rb1 was best. } (26. Rb1) 26... Nxe5?? { (-2.80 → -0.49) Blunder. Re8 was best. } (26... Re8 27. f4 f6 28. Nf3 Rxe1+ 29. Nxe1 Kf7 30. Nc2 Ke6 31. Ra2 Kd6 32. Rb2 Rb8 33. Kf2) 27. Rxe5 Re8?? { (-0.33 → 1.30) Blunder. Rd7 was best. } (27... Rd7 28. g4) 28. Rxe8+?? { (1.30 → -1.95) Blunder. Rxa7 was best. } (28. Rxa7 Kf8 29. Rxe8+ Rxe8 30. Kf1 Re7 31. Ra8+ Re8 32. Ra1 Re6 33. Rb1 Ke8 34. Rb5 Kd7) 28... Rxe8 29. g3 b5?? { (-2.00 → 1.18) Blunder. Re7 was best. } (29... Re7 30. Kg2) 30. cxb5 Rb8? { (1.25 → 2.55) Mistake. g5 was best. } (30... g5 31. Rxa7 Re1+ 32. Kg2 Rb1 33. Ra5 g4 34. b6 Rxb6 35. Rg5+ Rg6 36. Rd5 Kg7 37. Rxd4) 31. Rxa7 Rxb5?? { (2.54 → Mate in 2) Checkmate is now unavoidable. Kf8 was best. } (31... Kf8 32. Ra5 Ke7 33. Kg2 Kd6 34. Kf3 Rb7 35. Ra6+ Kc5 36. b6 h5 37. Ra5+ Kb4 38. Rxh5) 32. Ra8+ Rb8 33. Rxb8# { White wins by checkmate. } 1-0
Computer analysisMove timesCrosstableFEN & PGN
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