[Event "challenge Colmar Echecs 2"] [Site "https://lichess.org/gyYxHBUW"] [Date "2021.01.29"] [White "Ecueil"] [Black "OMEGA2900"] [Result "1-0"] [UTCDate "2021.01.29"] [UTCTime "19:45:46"] [WhiteElo "2006"] [BlackElo "2247"] [WhiteRatingDiff "+12"] [BlackRatingDiff "-11"] [Variant "Standard"] [TimeControl "300+3"] [ECO "A04"] [Opening "Zukertort Opening: Polish Defense"] [Termination "Normal"] [Annotator "lichess.org"] 1. Nf3 b5?! { (0.17 → 0.94) Inaccuracy. Nf6 was best. } { A04 Zukertort Opening: Polish Defense } (1... Nf6 2. c4 c6 3. Nc3 d5 4. e3 e6 5. Be2 Nbd7 6. Qc2) 2. e4 a6 3. g3 Bb7 4. Bg2? { (0.48 → -1.07) Mistake. d3 was best. } (4. d3 d6 5. Bg2 e6 6. O-O Nf6 7. b4 Be7 8. Nbd2 O-O) 4... Bxe4 5. O-O Nf6 6. Re1 Bb7 7. d4 d6 8. b3 g6 9. Bb2 Bg7 10. c4 O-O 11. Nbd2?! { (-0.98 → -1.65) Inaccuracy. d5 was best. } (11. d5) 11... c5? { (-1.65 → -0.12) Mistake. e6 was best. } (11... e6) 12. d5?! { (-0.12 → -0.90) Inaccuracy. Qe2 was best. } (12. Qe2 Qb6 13. Qxe7 Nbd7 14. Qe2 Rae8 15. Qd3 cxd4 16. Bxd4 Nc5 17. Rxe8 Rxe8 18. Re1 Rxe1+) 12... Nh5 13. Qc2 Bc8 14. Nh4?! { (-0.35 → -1.09) Inaccuracy. Bxg7 was best. } (14. Bxg7 Nxg7) 14... Bf5?? { (-1.09 → 1.19) Blunder. Nd7 was best. } (14... Nd7) 15. Nxf5 Bxb2?? { (1.41 → 4.85) Blunder. gxf5 was best. } (15... gxf5 16. cxb5) 16. Nxe7+ Kg7? { (4.73 → 9.05) Mistake. Qxe7 was best. } (16... Qxe7) 17. Qxb2+ Nf6 18. g4 h6 19. h4 Re8 20. g5 Nd7 21. gxf6+ Nxf6 22. Nc6 Qd7 23. Ne4 Qf5 24. Nxf6 Qxf6 25. Qxf6+ Kxf6 26. Rxe8 Rxe8 27. Kf1 Kf5 28. Re1 Ra8 29. Re7 f6 30. Re6 bxc4 31. bxc4 a5 32. Rxd6?! { (Mate in 3 → 12.86) Lost forced checkmate sequence. Ne7+ was best. } (32. Ne7+ Kg4 33. Re4+ Kh5 34. Bf3#) 32... a4?! { (12.86 → Mate in 6) Checkmate is now unavoidable. g5 was best. } (32... g5 33. Re6 gxh4 34. Bh3+ Kg6 35. d6 Kf7 36. d7 a4 37. d8=Q Rxd8 38. Nxd8+ Kg7 39. Ra6) 33. Rd8?! { (Mate in 6 → 11.36) Lost forced checkmate sequence. Bh3+ was best. } (33. Bh3+ Ke4 34. Ke2 Rf8 35. Re6+ Kf4 36. Ne7 Rg8 37. d6 f5 38. Nd5#) 33... Ra6 34. Ne7+ Ke5 35. Nxg6+ Kd4 36. d6 Kxc4 37. d7 Rd6 38. Nf8 Kc3 39. Rc8 c4 40. d8=Q Rxd8 41. Rxd8 Kb2 42. Rc8 c3?! { (15.69 → Mate in 9) Checkmate is now unavoidable. f5 was best. } (42... f5 43. Bd5) 43. Bd5?! { (Mate in 9 → 11.09) Lost forced checkmate sequence. Ke2 was best. } (43. Ke2 f5 44. Bd5 f4 45. Kd3 c2 46. Rxc2+ Ka3 47. Kc3 h5 48. Rc1 f3 49. Be4 Kxa2) 43... c2 44. Nd7 c1=Q+ 45. Rxc1 Kxc1 46. Nxf6 a3?! { (18.27 → Mate in 10) Checkmate is now unavoidable. Kd2 was best. } (46... Kd2 47. Ne4+) 47. Ng8 h5 48. f4 Kd2 49. f5 Ke3 50. f6 Kd4 51. Bb3 Ke5 52. f7 Kf4 53. f8=Q+ Kg3 54. Qf7 Kg4 55. Nh6+ Kxh4 56. Qg6 Kh3 57. Kf2 { Black resigns. } 1-0