lichess dev

[Event "Koltanowski Arena"] [Site "http://chess-academy.net/C5dQWlcP"] [Date "2026.02.05"] [Round "-"] [White "mihai9"] [Black "AntonLeshan"] [Result "0-1"] [UTCDate "2026.02.05"] [UTCTime "17:34:19"] [WhiteElo "1272"] [BlackElo "1278"] [WhiteRatingDiff "-11"] [BlackRatingDiff "+36"] [Variant "Standard"] [TimeControl "420+0"] [ECO "B02"] [Opening "Alekhine Defense"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. e4 Nf6?! { (0.12 → 0.93) Inaccuracy. Best move was e6. } { B02 Alekhine Defense } (1... e6 2. Nf3 d5 3. exd5 exd5 4. d4 Nf6 5. Bd3 Bd6 6. O-O) 2. Qf3? { (0.93 → -1.22) Mistake. Best move was e5. } (2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. Nf3 dxe5 6. Nxe5 N6d7) 2... d6? { (-1.22 → 0.30) Mistake. Best move was Nc6. } (2... Nc6 3. Nc3 e6 4. d4 Nxd4 5. Qd3 Nc6 6. Be3 Be7 7. O-O-O O-O 8. a3 d6 9. h3) 3. Bc4? { (0.30 → -0.75) Mistake. Best move was d4. } (3. d4 e5 4. Ne2 c6 5. Nbc3 Be7 6. h3 O-O 7. dxe5 dxe5 8. Ng3 c5 9. Bc4 Nc6) 3... Bg4? { (-0.75 → 0.75) Mistake. Best move was e6. } (3... e6) 4. Qg3? { (0.75 → -0.37) Mistake. Best move was Qb3. } (4. Qb3 e6 5. f3 d5 6. Be2 Bh5 7. g4 Bg6 8. h4 h5 9. g5 Nh7 10. Nc3 Nd7) 4... Nbd7? { (-0.37 → 0.88) Mistake. Best move was Nc6. } (4... Nc6 5. f3 Bd7 6. Ne2 Na5 7. d3 g6 8. Nbc3 Bg7 9. Bg5 h6 10. Be3 Nh5 11. Qh4) 5. f3?! { (0.88 → 0.30) Inaccuracy. Best move was Nc3. } (5. Nc3 e6 6. d4 d5 7. exd5 Bd6 8. Bf4 exd5 9. Bxd6 cxd6 10. Be2 Be6 11. O-O-O O-O) 5... Bh5 6. Qf4? { (0.91 → -1.16) Mistake. Best move was Nc3. } (6. Nc3 e6 7. Nge2 Bg6 8. O-O d5 9. exd5 Bd6 10. Qf2 exd5 11. Nxd5 O-O 12. Ne3 Nb6) 6... e5 7. Qg5?! { (-0.93 → -1.76) Inaccuracy. Best move was Qg3. } (7. Qg3) 7... h6?! { (-1.76 → -0.94) Inaccuracy. Best move was Be7. } (7... Be7 8. d3 O-O 9. Ne2 Bg6 10. Qd2 c6 11. Nbc3 b5 12. Bb3 a5 13. a3 Nc5 14. Ba2) 8. Qf5? { (-0.94 → -2.84) Mistake. Best move was Qg3. } (8. Qg3 Be7 9. h4 c6 10. Nc3 Qa5 11. Nge2 d5 12. exd5 cxd5 13. Bb5 O-O 14. d4 exd4) 8... Nc5? { (-2.84 → -1.43) Mistake. Best move was d5. } (8... d5 9. Bb3) 9. d4? { (-1.43 → -2.68) Mistake. Best move was Ne2. } (9. Ne2 Bg6 10. Qh3 d5 11. exd5 Bxc2 12. Bb5+ Nfd7 13. d4 Bd3 14. Nbc3 exd4 15. Nxd4 Bd6) 9... Na4?? { (-2.68 → 1.83) Blunder. Best move was Bg6. } (9... Bg6 10. Qh3 exd4 11. Ne2 d5 12. exd5 Nxd5 13. O-O Nb6 14. Bb3 Nxb3 15. cxb3 Nd5 16. Nf4) 10. dxe5 dxe5? { (1.22 → 4.21) Mistake. Best move was Bg6. } (10... Bg6 11. Bxf7+) 11. Qxe5+ Be7 12. Bg5?? { (4.75 → -4.19) Blunder. Best move was Bb5+. } (12. Bb5+) 12... hxg5 13. Qxg5?? { (-3.76 → -7.97) Blunder. Best move was Bb5+. } (13. Bb5+) 13... Ba3?? { (-7.97 → 2.67) Blunder. Best move was c6. } (13... c6 14. Qd2 Qb6 15. Nc3 Qxb2 16. Rb1 Qxc3 17. Qxc3 Nxc3 18. Rxb7 Bd6 19. Ne2 Nxe2 20. Bxe2) 14. Qxg7?? { (2.67 → -9.27) Blunder. Best move was Nxa3. } (14. Nxa3) 14... Bb4+? { (-9.27 → -8.26) Mistake. Best move was Rg8. } (14... Rg8 15. Qxg8+ Nxg8 16. Nxa3 Nxb2 17. Be2 Qg5 18. Nb5 O-O-O 19. Kf1 Qc5 20. Rb1 Qxc2 21. Na3) 15. c3? { (-8.26 → -10.59) Mistake. Best move was Nc3. } (15. Nc3 Rg8 16. Qxg8+ Nxg8 17. Bb5+ c6 18. Bxa4 Qa5 19. Ne2 Qxa4 20. O-O-O Qa5 21. h4 Nf6) 15... Bf8?? { (-10.59 → 2.26) Blunder. Best move was Rg8. } (15... Rg8 16. Qxg8+ Nxg8 17. cxb4 Nxb2 18. Na3 Qd6 19. Be2 Qxb4+ 20. Kf1 Qxa3 21. g4 Bg6 22. h4) 16. Qxf7+?? { (2.26 → -18.10) Blunder. Best move was Qxh8. } (16. Qxh8 Nxb2 17. Nd2 Qe7 18. e5 Qxe5+ 19. Ne4 Ke7 20. Be2 Bg6 21. Qxf6+ Qxf6 22. Nxf6 Kxf6) 16... Bxf7 17. Bxf7+ Kxf7 18. e5 Nd5 19. c4 Ne3 20. Ke2?! { (-24.96 → Mate in 6) Checkmate is now unavoidable. Best move was Nc3. } (20. Nc3) 20... Nxc4?! { (Mate in 6 → -31.48) Lost forced checkmate sequence. Best move was Qd1+. } (20... Qd1+ 21. Kf2 Qf1+ 22. Kxe3 Bc5+ 23. Kf4 Qxc4+ 24. Kg5 Rag8+ 25. Kf5 Rh5#) 21. Nh3 Nxe5 22. f4?! { (-20.41 → Mate in 6) Checkmate is now unavoidable. Best move was Rd1. } (22. Rd1 Qe8) 22... Ng6?! { (Mate in 6 → -22.08) Lost forced checkmate sequence. Best move was Qd3+. } (22... Qd3+ 23. Ke1 Rxh3 24. Rf1 Re3+ 25. Kf2 Bc5 26. Kg1 Rf3+ 27. Kh1 Rxf1#) 23. f5?! { (-22.08 → Mate in 8) Checkmate is now unavoidable. Best move was Rd1. } (23. Rd1 Qe8+) 23... Nh4?! { (Mate in 8 → -24.59) Lost forced checkmate sequence. Best move was Qe8+. } (23... Qe8+ 24. Kf1 Qb5+ 25. Kf2 Bc5+ 26. Ke1 Rae8+ 27. Kd1 Qe2+ 28. Kc1 Be3+ 29. Nd2 Qxd2+ 30. Kb1) 24. Rd1?! { (-24.59 → Mate in 9) Checkmate is now unavoidable. Best move was Nd2. } (24. Nd2 Nxg2) 24... Nxg2?! { (Mate in 9 → -15.23) Lost forced checkmate sequence. Best move was Qe8+. } (24... Qe8+ 25. Kf1 Qb5+ 26. Kf2 Bc5+ 27. Kg3 Rag8+ 28. Ng5+ Rxg5+ 29. Kf4 Qc4+ 30. Rd4 Qxd4+ 31. Kxg5) 25. Rxd8 Rxd8 26. b3?! { (-12.11 → Mate in 7) Checkmate is now unavoidable. Best move was Ng5+. } (26. Ng5+ Kf6) 26... Rxh3 27. bxa4 Rxh2?! { (Mate in 5 → Mate in 5) Not the best checkmate sequence. Best move was Nf4+. } (27... Nf4+ 28. Ke1 Rxh2 29. Nc3 Bc5 30. Nd5 Rxd5 31. Rc1 Rh1#) 28. Nc3 Re8+?! { (Mate in 5 → Mate in 11) Not the best checkmate sequence. Best move was Nh4+. } (28... Nh4+ 29. Kf1 Rdd2 30. Ne2 Nf3 31. Re1 Bc5 32. a3 Rf2#) 29. Kd3 Rh3+ 30. Kc2 Ne3+ 31. Kd3 Bb4 32. Nb5 Rd8+?! { (Mate in 4 → Mate in 5) Not the best checkmate sequence. Best move was Nc2+. } (32... Nc2+ 33. Kc4 Re5 34. Nd6+ cxd6 35. f6 Rc3#) 33. Ke2 Rd2+ 34. Ke1 Rh1# { Black wins by checkmate. } 0-1