lichess dev

[Event "Open Arena"] [Site "http://chess-academy.net/mxUFK6YZ"] [Date "2020.12.09"] [Round "-"] [White "kidman"] [Black "Ops_MS"] [Result "0-1"] [UTCDate "2020.12.09"] [UTCTime "17:16:53"] [WhiteElo "1423"] [BlackElo "1844"] [WhiteRatingDiff "-6"] [BlackRatingDiff "+8"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A28"] [Opening "English Opening: Four Knights System, Nimzowitsch Variation"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. e4 e5 2. Nf3 Nc6 3. c4? { (0.40 → -0.95) Mistake. Best move was Bb5. } (3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Bc5 7. Nc3 d6) 3... Nf6? { (-0.95 → 0.21) Mistake. Best move was Bc5. } (3... Bc5 4. a3 a5 5. Nxe5 Qh4 6. Nd3 Qxe4+ 7. Qe2 Qxe2+ 8. Bxe2 Nd4 9. Bd1 d6 10. O-O) 4. Nc3 { A28 English Opening: Four Knights System, Nimzowitsch Variation } d6? { (-0.33 → 0.75) Mistake. Best move was Bb4. } (4... Bb4 5. d3 d6 6. Be2 O-O 7. O-O a5 8. a3 Bc5 9. Be3 Bd7 10. h3 Re8 11. Nd5) 5. Nd5? { (0.75 → -1.02) Mistake. Best move was d4. } (5. d4) 5... Bg4?! { (-1.02 → -0.13) Inaccuracy. Best move was Nxe4. } (5... Nxe4 6. Be2 Be7 7. d4 O-O 8. O-O Nf6 9. Be3 a5 10. a3 Ng4 11. b4 axb4 12. axb4) 6. Ng5?? { (-0.13 → -9.78) Blunder. Best move was Be2. } (6. Be2) 6... Bxd1 7. Kxd1 Nxd5 8. exd5?! { (-9.44 → -10.02) Inaccuracy. Best move was cxd5. } (8. cxd5 Qxg5 9. dxc6 bxc6 10. d3 Qg6 11. Be3 f5 12. f3 c5 13. Rc1 Be7 14. Rc3 f4) 8... Qxg5 9. dxc6 bxc6 10. d4 Qg4+ 11. f3 Qxd4+ 12. Bd2 Qxb2 13. Rc1 Qxa2 14. Bd3 Be7 15. Re1 O-O 16. Rc2 Qa4 17. Re2 Rab8 18. Re1 h6 19. Ke2 c5 20. Rec1 Qd7 21. f4 exf4 22. Rg1 Qe6+ 23. Kd1 Rb1+ 24. Bc1?! { (-17.52 → Mate in 9) Checkmate is now unavoidable. Best move was Rc1. } (24. Rc1) 24... c6?! { (Mate in 9 → -13.42) Lost forced checkmate sequence. Best move was Qe3. } (24... Qe3 25. Be4 Rxc1+ 26. Rxc1 Qd4+ 27. Ke2 Qxe4+ 28. Kf1 Rb8 29. Re1 Qd3+ 30. Re2 Rb2 31. Rh1) 25. g3?! { (-13.42 → Mate in 10) Checkmate is now unavoidable. Best move was Re2. } (25. Re2 Rxc1+ 26. Kxc1 Qf6 27. Kc2 Rb8 28. Rb1 Rxb1 29. Kxb1 Qc3 30. Rxe7 Qxd3+ 31. Kb2 Qd2+) 25... Bg5?! { (Mate in 10 → -24.46) Lost forced checkmate sequence. Best move was Qe3. } (25... Qe3 26. Bf5 Qxg1+ 27. Ke2 f3+ 28. Kxf3 Rb3+ 29. Ke2 Bg5 30. Be4 Re8 31. Rc3 Rxc3 32. Bxg5) 26. gxf4 Bxf4 27. Rd2?! { (-28.01 → Mate in 9) Checkmate is now unavoidable. Best move was Rxg7+. } (27. Rxg7+ Kxg7) 27... Bxd2 28. Kxd2 Re8 29. Kc2 Rb7 30. Bb2?! { (-24.33 → Mate in 8) Checkmate is now unavoidable. Best move was h4. } (30. h4 d5) 30... d5?! { (Mate in 8 → -19.72) Lost forced checkmate sequence. Best move was Rxb2+. } (30... Rxb2+ 31. Kxb2 Qf6+ 32. Kb1 Qc3 33. Bc2 Qd2 34. Rg3 Re2 35. Rc3 Qxc3 36. Bh7+ Kxh7 37. h3) 31. Rxg7+?! { (-19.72 → Mate in 13) Checkmate is now unavoidable. Best move was Bxg7. } (31. Bxg7 f5 32. Bc3+ Kf8 33. Re1 Qg6 34. Rd1 Qg2+ 35. Rd2 Qg1 36. Rd1 Qxh2+ 37. Rd2 Qf4) 31... Kf8 32. Rh7?! { (-65.37 → Mate in 9) Checkmate is now unavoidable. Best move was cxd5. } (32. cxd5 Rxb2+) 32... dxc4 33. Rh8+ Ke7 34. Bxc4 Qxc4+ 35. Kb1 Rxb2+?! { (Mate in 3 → Mate in 3) Not the best checkmate sequence. Best move was Qc3. } (35... Qc3 36. Rxe8+ Kxe8 37. Ka2 Qxb2#) 36. Kxb2 Qd4+?! { (Mate in 3 → Mate in 4) Not the best checkmate sequence. Best move was Rxh8. } (36... Rxh8 37. Ka1 Rb8 38. h4 Qa4#) 37. Ka3 Qxh8?! { (Mate in 4 → Mate in 4) Not the best checkmate sequence. Best move was Rxh8. } (37... Rxh8 38. Kb3 Rb8+ 39. Kc2 Rb2+ 40. Kc1 Qd2#) 38. Ka4 Rb8 39. Ka5 Qa1# { Black wins by checkmate. } 0-1