lichess dev

[Event "Monthly UltraBullet Arena"] [Site "http://chess-academy.net/VLpEDHKr"] [Date "2025.11.02"] [Round "-"] [White "Yoshi"] [Black "Stockfish17NNUE"] [Result "0-1"] [UTCDate "2025.11.02"] [UTCTime "15:18:54"] [WhiteElo "1559"] [BlackElo "1820"] [WhiteRatingDiff "-43"] [BlackRatingDiff "+32"] [Variant "Standard"] [TimeControl "15+0"] [ECO "A43"] [Opening "Old Benoni Defense"] [Termination "Time forfeit"] [Annotator "chess-academy.net"] 1. d4 c5?! { (0.15 → 0.92) Inaccuracy. Best move was d5. } { A43 Old Benoni Defense } (1... d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Bb4 5. Bg5 O-O 6. e3) 2. Bf4? { (0.92 → -0.70) Mistake. Best move was d5. } (2. d5 Nf6) 2... cxd4 3. Bg3? { (-0.21 → -1.66) Mistake. Best move was c3. } (3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 d6 6. e4 e5 7. Be3 Nf6 8. Bc4 Be7 9. O-O O-O) 3... Nf6?! { (-1.66 → -0.69) Inaccuracy. Best move was Qb6. } (3... Qb6) 4. Qxd4?! { (-0.69 → -1.19) Inaccuracy. Best move was Nf3. } (4. Nf3) 4... d5?! { (-1.19 → -0.62) Inaccuracy. Best move was Nc6. } (4... Nc6) 5. Qd1 Nc6?! { (-1.10 → -0.60) Inaccuracy. Best move was Qb6. } (5... Qb6 6. Nd2 Qxb2 7. e3 e6 8. Ngf3 Be7 9. c4 O-O 10. cxd5 Nxd5 11. Qc1 Qxc1+ 12. Rxc1) 6. e3?! { (-0.60 → -1.49) Inaccuracy. Best move was Nf3. } (6. Nf3) 6... e6?! { (-1.49 → -0.59) Inaccuracy. Best move was h5. } (6... h5 7. Nf3) 7. c3?! { (-0.59 → -1.46) Inaccuracy. Best move was Nd2. } (7. Nd2 Be7) 7... Bb4?? { (-1.46 → 4.22) Blunder. Best move was Bd6. } (7... Bd6 8. Nf3 O-O 9. Bxd6 Qxd6 10. c4 Qb4+ 11. Qd2 Qc5 12. Nc3 dxc4 13. O-O-O b5 14. Qd6) 8. cxb4 Ne4?! { (3.69 → 4.61) Inaccuracy. Best move was Nxb4. } (8... Nxb4 9. Nc3) 9. Nc3?! { (4.61 → 4.11) Inaccuracy. Best move was b5. } (9. b5) 9... Nxg3 10. hxg3 Nxb4 11. Bd3?! { (4.38 → 3.74) Inaccuracy. Best move was Nf3. } (11. Nf3 h6) 11... Nc2+?? { (3.74 → 9.36) Blunder. Best move was Bd7. } (11... Bd7 12. Rxh7 Rxh7 13. Bxh7 Qb6 14. Qd2 O-O-O 15. O-O-O g6 16. Nf3 Qc7 17. a3 Na2+ 18. Kb1) 12. Qxc2?! { (9.36 → 8.64) Inaccuracy. Best move was Bxc2. } (12. Bxc2 Qf6 13. Bxh7 Bd7 14. Qg4 b5 15. Nf3 a5 16. O-O-O O-O-O 17. Bd3 b4 18. Rxh8 Rxh8) 12... O-O? { (8.64 → Mate in 4) Checkmate is now unavoidable. Best move was h6. } (12... h6) 13. Qd1? { (Mate in 4 → 8.54) Lost forced checkmate sequence. Best move was Bxh7+. } (13. Bxh7+ Kh8 14. Bg8+ Qh4 15. Rxh4+ Kxg8 16. Qh7#) 13... Kh8? { (8.54 → Mate in 4) Checkmate is now unavoidable. Best move was g6. } (13... g6 14. Qd2) 14. Bb1? { (Mate in 4 → 9.27) Lost forced checkmate sequence. Best move was Rxh7+. } (14. Rxh7+ Kg8 15. Rh8+ Kxh8 16. Qh5+ Kg8 17. Qh7#) 14... f5 15. Qc2?! { (9.73 → 8.96) Inaccuracy. Best move was Nf3. } (15. Nf3 Qb6 16. Qd2 d4 17. exd4 a6 18. Bd3 Qd6 19. O-O-O Kg8 20. Rh4 b5 21. Rdh1 h6) 15... g6 16. g4 Qf6?! { (9.05 → 9.60) Inaccuracy. Best move was Rg8. } (16... Rg8 17. Nge2 Rg7 18. gxf5 gxf5 19. Qd2 e5 20. e4 d4 21. exf5 Qa5 22. f6 Rf7 23. Qh6) 17. gxf5 exf5?! { (9.32 → 10.16) Inaccuracy. Best move was Qxf5. } (17... Qxf5 18. Nf3) 18. Qxf5?? { (10.16 → -5.63) Blunder. Best move was Nxd5. } (18. Nxd5 Qg7 19. Nf4 Bd7 20. Nf3 Rac8 21. Qd2 Rf6 22. Ng5 h5 23. Bc2 Rb6 24. Nxg6+ Qxg6) 18... Qxf5?? { (-5.63 → 6.51) Blunder. Best move was Bxf5. } (18... Bxf5) 19. Bxf5 Bxf5 20. g4? { (6.42 → 4.28) Mistake. Best move was Nge2. } (20. Nge2 Be6) 20... Be4? { (4.28 → 6.31) Mistake. Best move was Bxg4. } { Black wins on time. } (20... Bxg4 21. Nge2 Kg7 22. Nd4 Rf7 23. Nxd5 Raf8 24. Rh2 Rd7 25. Nb4 Re8 26. Kd2 Be6 27. Nd3) 0-1