lichess dev

[Event "Koppel Arena"] [Site "http://chess-academy.net/DeFog7Xe"] [Date "2026.01.24"] [Round "-"] [White "David_2014"] [Black "RomanSereda"] [Result "0-1"] [UTCDate "2026.01.24"] [UTCTime "17:50:14"] [WhiteElo "1327"] [BlackElo "1672"] [WhiteRatingDiff "-4"] [BlackRatingDiff "+3"] [Variant "Standard"] [TimeControl "420+0"] [ECO "A40"] [Opening "Horwitz Defense"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. d4 e6 { A40 Horwitz Defense } 2. Qd3? { (0.38 → -0.97) Mistake. Best move was e4. } (2. e4 d5 3. exd5 exd5 4. Nf3 Nf6 5. Bd3 c5 6. O-O c4) 2... Qf6? { (-0.97 → 1.02) Mistake. Best move was d5. } (2... d5) 3. Qf3? { (1.02 → -1.48) Mistake. Best move was e4. } (3. e4 Nc6 4. Nf3 d5 5. Nc3 Bd7 6. h4 dxe4 7. Nxe4 Qg6 8. h5 Qf5 9. c3 h6) 3... Qxd4 4. e3? { (-0.61 → -1.97) Mistake. Best move was e4. } (4. e4) 4... Qf6? { (-1.97 → -0.64) Mistake. Best move was Qb6. } (4... Qb6 5. e4) 5. c3? { (-0.64 → -1.91) Mistake. Best move was Nc3. } (5. Nc3) 5... Qxf3?! { (-1.91 → -1.40) Inaccuracy. Best move was d5. } (5... d5 6. Nd2) 6. gxf3?! { (-1.40 → -2.08) Inaccuracy. Best move was Nxf3. } (6. Nxf3 b6 7. Be2 Bb7 8. c4 Be7 9. Nc3 Nf6 10. O-O O-O 11. Nd2 d6 12. b3 a5) 6... Nc6 7. Ne2 Na5?! { (-1.89 → -0.96) Inaccuracy. Best move was d5. } (7... d5 8. Nd2 g6 9. f4 Bg7 10. h4 Nf6 11. b3 O-O 12. Bg2 e5 13. c4 e4 14. Ba3) 8. e4?! { (-0.96 → -1.58) Inaccuracy. Best move was Nd2. } (8. Nd2 Nc6) 8... Nc4?! { (-1.58 → -0.84) Inaccuracy. Best move was Ne7. } (8... Ne7 9. Bf4 d6 10. Nd2 e5 11. Be3 g6 12. f4 Nac6 13. O-O-O Bg7 14. fxe5 Nxe5 15. f4) 9. Bh3? { (-0.84 → -2.38) Mistake. Best move was Nd4. } (9. Nd4) 9... Ne5 10. Bf1? { (-2.10 → -3.73) Mistake. Best move was Bg2. } (10. Bg2) 10... Nxf3+ 11. Kd1 Ne5? { (-3.91 → -2.62) Mistake. Best move was Nf6. } (11... Nf6) 12. h4? { (-2.62 → -3.93) Mistake. Best move was Kc2. } (12. Kc2 Bc5) 12... h6? { (-3.93 → -2.52) Mistake. Best move was Nf6. } (12... Nf6 13. Bg2 b6 14. f4 Neg4 15. e5 Nd5 16. Rg1 h5 17. c4 Nge3+ 18. Bxe3 Nxe3+ 19. Kd2) 13. Rg1? { (-2.52 → -3.58) Mistake. Best move was Kc2. } (13. Kc2 Nf6 14. Bf4 Nc6 15. Nd2 e5 16. Be3 d5 17. Bh3 Bxh3 18. Rxh3 dxe4 19. Ng3 Nd5) 13... g5? { (-3.58 → -2.11) Mistake. Best move was Nf6. } (13... Nf6 14. Bf4) 14. hxg5 hxg5 15. Rxg5 d6 16. Nf4? { (-2.10 → -3.75) Mistake. Best move was Rg2. } (16. Rg2) 16... Rh1?! { (-3.75 → -2.91) Inaccuracy. Best move was Nf6. } (16... Nf6) 17. Nd3?? { (-2.91 → -7.96) Blunder. Best move was Nd2. } (17. Nd2 Nf6 18. Rg3 Nxe4 19. Nxe4 Rxf1+ 20. Ke2 Rh1 21. Nf6+ Ke7 22. Ng8+ Kd7 23. b3 a5) 17... Nxd3 18. Bf4? { (-7.77 → -13.34) Mistake. Best move was Be3. } (18. Be3) 18... Rxf1+ 19. Kd2 Nxf4 20. Rg2 Rh1 21. Na3 Nxg2 22. Nc4 Nf4 23. Ne3 Rh2 24. Rg1 Rxf2+ 25. Ke1 Re2+ 26. Kf1 e5 27. Rg4?! { (-26.87 → Mate in 8) Checkmate is now unavoidable. Best move was Rxg8. } (27. Rxg8 Bh3+) 27... Bxg4 28. Nxg4 Rxe4?! { (Mate in 12 → -31.57) Lost forced checkmate sequence. Best move was Rxb2. } (28... Rxb2 29. Ke1 Rxa2 30. Ne3 Re2+ 31. Kd1 Rxe3 32. Kc2 Nf6 33. Kb2 Nxe4 34. c4 O-O-O 35. Ka2) 29. Nf2 Re3 30. Nd1 Rf3+ 31. Ke1 Ng2+ 32. Ke2 Rh3 33. Nf2 Nf4+ 34. Kf1 Rh2 35. Ng4 Rg2 36. Nf2?! { (-68.94 → Mate in 9) Checkmate is now unavoidable. Best move was Ne3. } (36. Ne3 Rxb2 37. a3 Ra2 38. a4 Ne7 39. c4 O-O-O 40. Ke1 Re2+ 41. Kd1 Rxe3 42. Kc2 Ra3) 36... e4?! { (Mate in 9 → -25.98) Lost forced checkmate sequence. Best move was Ne7. } (36... Ne7 37. Ke1 Nf5 38. c4 e4 39. Kd2 Rxf2+ 40. Kc3 Nd3 41. c5 Rxb2 42. Kc4 Bg7 43. Kd5) 37. Nh1?! { (-25.98 → Mate in 6) Checkmate is now unavoidable. Best move was Nh3. } (37. Nh3 Rg3) 37... e3 38. Nf2 Rxf2+ 39. Ke1 Ng2+?! { (Mate in 2 → Mate in 5) Not the best checkmate sequence. Best move was Nd3+. } (39... Nd3+ 40. Kd1 Rd2#) 40. Kd1 e2+?! { (Mate in 5 → Mate in 5) Not the best checkmate sequence. Best move was d5. } (40... d5 41. a4 e2+ 42. Kc2 e1=Q+ 43. Kb3 Qa1 44. c4 Qxb2#) 41. Kc1 e1=Q# { Black wins by checkmate. } 0-1