lichess dev

[Event "Open Arena"] [Site "http://chess-academy.net/RJ4Vst71"] [Date "2020.12.14"] [Round "-"] [White "nectarie"] [Black "Stefansah"] [Result "1-0"] [UTCDate "2020.12.14"] [UTCTime "17:38:22"] [WhiteElo "1239"] [BlackElo "972"] [WhiteRatingDiff "+7"] [BlackRatingDiff "-8"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A40"] [Opening "Queen's Pawn"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. d4 { A40 Queen's Pawn } f6? { (0.15 → 1.90) Mistake. Best move was d5. } (1... d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Bb4 5. Bg5 O-O 6. e3) 2. e4 e5? { (1.18 → 2.38) Mistake. Best move was e6. } (2... e6) 3. dxe5?! { (2.38 → 1.44) Inaccuracy. Best move was Bc4. } (3. Bc4 exd4 4. Nf3 Nc6 5. O-O Nge7 6. Nxd4 Nxd4 7. Qxd4 Nc6 8. Qd1 h5 9. Be3 Ne5) 3... fxe5?? { (1.44 → 8.12) Blunder. Best move was Nc6. } (3... Nc6) 4. g4?? { (8.12 → -0.66) Blunder. Best move was Qh5+. } (4. Qh5+ g6 5. Qxe5+ Qe7 6. Qxh8 Qf7 7. Qe5+ Qe7 8. Qxe7+ Nxe7 9. Nc3 Nbc6 10. Bg5 d6) 4... Bb4+?! { (-0.66 → 0.22) Inaccuracy. Best move was d5. } (4... d5 5. exd5 Nf6 6. h3 Qxd5 7. Qxd5 Nxd5 8. Ne2 Nc6 9. Bg2 Be6 10. Nbc3 Ncb4 11. O-O) 5. c3?! { (0.22 → -0.55) Inaccuracy. Best move was Bd2. } (5. Bd2) 5... Bc5 6. a4? { (0.23 → -1.05) Mistake. Best move was Nd2. } (6. Nd2) 6... Be3?? { (-1.05 → 5.42) Blunder. Best move was Nf6. } (6... Nf6) 7. Bxe3 Qh4? { (4.87 → 6.38) Mistake. Best move was d5. } (7... d5 8. Qxd5 Qxd5 9. exd5 Nf6 10. Nf3 Nxd5 11. Nbd2 Nxe3 12. fxe3 Nc6 13. Bc4 Bxg4 14. Rg1) 8. Nf3 Qe7 9. c4 Qd6? { (5.80 → 7.97) Mistake. Best move was d6. } (9... d6 10. h3 Nf6 11. Nc3 Be6 12. Nd5 Qd7 13. Qb3 c6 14. Nxf6+ gxf6 15. O-O-O Na6 16. Be2) 10. Qxd6 cxd6 11. b4? { (7.95 → 6.27) Mistake. Best move was Nc3. } (11. Nc3 Ne7) 11... d5? { (6.27 → 7.97) Mistake. Best move was Na6. } (11... Na6 12. b5) 12. cxd5 d6 13. Bh3? { (7.68 → 5.61) Mistake. Best move was h3. } (13. h3 Na6) 13... g5? { (5.61 → 8.39) Mistake. Best move was Na6. } (13... Na6 14. Na3) 14. O-O?! { (8.39 → 7.78) Inaccuracy. Best move was Na3. } (14. Na3 Nf6) 14... Be6? { (7.78 → 13.06) Mistake. Best move was Nf6. } (14... Nf6 15. Rc1 Na6 16. b5 Nb4 17. Nxg5 Rg8 18. Kf1 a6 19. Ne6 Bxe6 20. dxe6 Nxe4 21. Rc4) 15. dxe6 Ke7 16. Bxg5+ Kxe6 17. Rd1 h6 18. Be3 Nf6 19. g5+ Kf7 20. gxf6 Kxf6 21. Rxd6+ Ke7 22. Rd5 Kf6 23. Rxe5 Kg6 24. Re6+ Kf7?! { (27.33 → Mate in 9) Checkmate is now unavoidable. Best move was Kg7. } (24... Kg7 25. Bd4+) 25. Ne5+ Kg8 26. Re8+?! { (Mate in 5 → Mate in 8) Not the best checkmate sequence. Best move was Re7. } (26. Re7 Rh7 27. Be6+ Rf7 28. Rxf7 Nc6 29. Re7+ Kh8 30. Ng6#) 26... Kg7 27. Re7+ Kf6 28. Rxb7?! { (Mate in 7 → 18.82) Lost forced checkmate sequence. Best move was Rf7+. } (28. Rf7+ Kxe5 29. Nc3 Rg8+ 30. Kf1 Rg4 31. Bxg4 h5 32. f4+ Kd6 33. Rd1+ Kc6 34. b5#) 28... Kxe5 29. Rb5+ Kxe4?! { (18.28 → Mate in 4) Checkmate is now unavoidable. Best move was Kd6. } (29... Kd6 30. e5+) 30. Nd2+?! { (Mate in 4 → Mate in 4) Not the best checkmate sequence. Best move was Ra3. } (30. Ra3 Rg8+ 31. Bg2+ Rxg2+ 32. Kxg2 a5 33. f3#) 30... Kd3 31. Ra3+?! { (Mate in 4 → Mate in 4) Not the best checkmate sequence. Best move was Bf1+. } (31. Bf1+ Kc3 32. Rc5+ Kxb4 33. Rb5+ Kc3 34. Rc1#) 31... Ke2 32. Rc5?! { (Mate in 2 → Mate in 4) Not the best checkmate sequence. Best move was Bg4+. } (32. Bg4+ Ke1 33. Ra1#) 32... Ke1 33. Ra1+ Ke2 34. Bg4+?! { (Mate in 1 → Mate in 1) Not the best checkmate sequence. Best move was Bf1#. } (34. Bf1#) 34... Kd3 35. Rd5+?! { (Mate in 1 → Mate in 3) Not the best checkmate sequence. Best move was Ra3#. } (35. Ra3#) 35... Kc2 36. Rc5+ Kb2 37. Rb1+?! { (Mate in 1 → Mate in 3) Not the best checkmate sequence. Best move was Bd4#. } (37. Bd4#) 37... Ka3 38. Rc3+?! { (Mate in 3 → Mate in 3) Not the best checkmate sequence. Best move was Rb3+. } (38. Rb3+ Ka2 39. Rc2+ Ka1 40. Bd4#) 38... Kxa4 39. Ra1+ Kxb4 40. Rc4+?! { (Mate in 1 → Mate in 3) Not the best checkmate sequence. Best move was Rb3#. } (40. Rb3#) 40... Kb5 41. Rb1+ Ka6 42. Ra4# { White wins by checkmate. } 1-0