lichess dev

[Event "Koltanowski Arena"] [Site "http://chess-academy.net/C0hfVf7w"] [Date "2025.03.06"] [Round "-"] [White "B144I"] [Black "toma123"] [Result "1-0"] [UTCDate "2025.03.06"] [UTCTime "17:25:48"] [WhiteElo "1092"] [BlackElo "1327"] [WhiteRatingDiff "+205"] [BlackRatingDiff "-194"] [Variant "Standard"] [TimeControl "600+0"] [ECO "B00"] [Opening "Owen Defense"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. e4 b6?! { (0.12 → 0.84) Inaccuracy. Best move was e6. } { B00 Owen Defense } (1... e6 2. Nf3 d5 3. exd5 exd5 4. d4 Nf6 5. Bd3 Bd6 6. O-O) 2. d3?! { (0.84 → 0.01) Inaccuracy. Best move was d4. } (2. d4 Bb7 3. Bd3 Nf6 4. Nc3 e6 5. Nge2 d5 6. exd5 Nxd5) 2... Bb7 3. Nf3 e6 4. Ne5? { (0.26 → -0.77) Mistake. Best move was Be2. } (4. Be2 d6) 4... Bd6?! { (-0.77 → -0.01) Inaccuracy. Best move was c5. } (4... c5) 5. Nc4?! { (-0.01 → -0.52) Inaccuracy. Best move was Nf3. } (5. Nf3 c5 6. g3 Be7 7. Bg2 d6 8. O-O Nf6 9. b3 O-O 10. Re1 Nc6 11. Nbd2 Qc7) 5... Ba6? { (-0.52 → 1.64) Mistake. Best move was Be7. } (5... Be7 6. Ne3 Nf6 7. e5 Ng8 8. d4 d6 9. Bb5+ Nd7 10. exd6 Bxd6 11. O-O a6 12. Be2) 6. Ne3? { (1.64 → 0.23) Mistake. Best move was Nxd6+. } (6. Nxd6+) 6... Nc6?! { (0.23 → 0.78) Inaccuracy. Best move was Ne7. } (6... Ne7 7. g3) 7. b3? { (0.78 → -0.44) Mistake. Best move was g3. } (7. g3 Nh6) 7... Be5? { (-0.44 → 0.74) Mistake. Best move was Nge7. } (7... Nge7 8. d4) 8. c3 Na5? { (0.16 → 1.35) Mistake. Best move was Bf4. } (8... Bf4 9. a4) 9. Ng4?! { (1.35 → 0.55) Inaccuracy. Best move was b4. } (9. b4 Nc6) 9... Bd6?! { (0.55 → 1.10) Inaccuracy. Best move was Nc6. } (9... Nc6) 10. Bb2? { (1.10 → 0.06) Mistake. Best move was b4. } (10. b4) 10... Bf4? { (0.06 → 1.79) Mistake. Best move was f5. } (10... f5) 11. b4?! { (1.79 → 0.81) Inaccuracy. Best move was g3. } (11. g3 Bd6) 11... Nc6? { (0.81 → 1.96) Mistake. Best move was h5. } (11... h5 12. g3) 12. Na3? { (1.96 → 0.93) Mistake. Best move was b5. } (12. b5 h5) 12... Ne5 13. Nxe5?! { (1.40 → 0.67) Inaccuracy. Best move was g3. } (13. g3) 13... Bxe5 14. Nc4? { (1.23 → -0.98) Mistake. Best move was g3. } (14. g3) 14... Bf4? { (-0.98 → 1.67) Mistake. Best move was Bxc4. } (14... Bxc4 15. dxc4 a5 16. b5 h5 17. g3 h4 18. Bg2 Qf6 19. Qd3 g5 20. O-O-O d6 21. Qe3) 15. Qf3? { (1.67 → 0.33) Mistake. Best move was g3. } (15. g3 Bg5 16. Bg2 Nh6 17. O-O O-O 18. Qe2 c5 19. Nd6 Be7 20. b5 Bxd6 21. bxa6 f6) 15... Bg5?! { (0.33 → 1.10) Inaccuracy. Best move was Bh6. } (15... Bh6 16. a4 Bxc4 17. dxc4 Qg5 18. Qe2 Nf6 19. g3 e5 20. h4 Qg6 21. a5 Qxe4 22. Qxe4) 16. Ne5? { (1.10 → -0.06) Mistake. Best move was a4. } (16. a4) 16... Qe7?! { (-0.06 → 0.88) Inaccuracy. Best move was Nh6. } (16... Nh6) 17. c4?? { (0.88 → Mate in 3) Checkmate is now unavoidable. Best move was a4. } (17. a4) 17... Qxb4+ 18. Kd1 Qxb2?? { (Mate in 1 → Mate in 2) Lost forced checkmate sequence. Best move was Qd2#. } (18... Qd2#) 19. Qxf7+ Kd8 20. Qf8# { White wins by checkmate. } 1-0