[Event "KSK-Advents-Challenge No2"] [Site "https://lichess.org/NJc5KvwP"] [Date "2020.12.18"] [White "nickzerstoerer"] [Black "Checker525"] [Result "0-1"] [UTCDate "2020.12.18"] [UTCTime "18:30:01"] [WhiteElo "1805"] [BlackElo "2028"] [WhiteRatingDiff "-4"] [BlackRatingDiff "+2"] [Variant "Standard"] [TimeControl "300+0"] [ECO "B30"] [Opening "Sicilian Defense: Old Sicilian"] [Termination "Time forfeit"] [Annotator "lichess.org"] 1. e4 c5 2. Nf3 Nc6 { B30 Sicilian Defense: Old Sicilian } 3. Bc4 e6 4. O-O Nge7?! { (-0.17 → 0.56) Inaccuracy. Nf6 was best. } (4... Nf6 5. d3 d5 6. Bb5 Qb6 7. Bxc6+ Qxc6 8. e5 Nd7 9. c4) 5. d3?! { (0.56 → -0.05) Inaccuracy. d4 was best. } (5. d4 cxd4 6. Nxd4 Ng6 7. Be3 Be7 8. c3 O-O 9. Qh5 Qa5) 5... g6 6. Nc3 Bg7 7. Be3? { (-0.28 → -1.72) Mistake. Bb3 was best. } (7. Bb3 O-O 8. Be3 Nd4 9. Bf4 d5 10. Nxd4 cxd4 11. Ne2 dxe4) 7... d6?! { (-1.72 → -0.64) Inaccuracy. d5 was best. } (7... d5 8. exd5 exd5 9. Nxd5 Nxd5 10. Bxc5 Be6 11. c3 h6 12. Re1) 8. Qd2? { (-0.64 → -1.84) Mistake. Re1 was best. } (8. Re1 O-O 9. Bb3 a6 10. a4 Nd4 11. Bxd4 cxd4 12. Ne2 Nc6) 8... Nd4? { (-1.84 → -0.38) Mistake. d5 was best. } (8... d5 9. Bh6) 9. Bxd4 cxd4 10. Nb5 Qb6?? { (-0.38 → 1.50) Blunder. Nc6 was best. } (10... Nc6 11. c3) 11. a4 a6 12. a5 Qc5 13. b4 Qc6 14. Nbxd4 Qd7 15. c3 O-O 16. Nb3?! { (1.62 → 0.86) Inaccuracy. Rfe1 was best. } (16. Rfe1 Qc7 17. Bb3 Bd7 18. h3 Rac8 19. Rac1 Rb8 20. Qe3 b6 21. axb6 Qxb6 22. Ra1 Rfc8) 16... d5? { (0.86 → 2.49) Mistake. Qc7 was best. } (16... Qc7) 17. exd5 exd5 18. Nc5 Qc7 19. Ba2 Bg4 20. Qe2?? { (1.20 → -1.63) Blunder. Nd4 was best. } (20. Nd4 Bxd4) 20... Rfe8?? { (-1.63 → 2.65) Blunder. Bxc3 was best. } (20... Bxc3 21. Rab1) 21. d4 Nf5?! { (2.27 → 3.45) Inaccuracy. Bd7 was best. } (21... Bd7) 22. Qd3 Rad8 23. h3 Bxf3 24. Qxf3 h5 25. Bxd5 Nh4 26. Qg3 Qxg3 27. Bxf7+?? { (3.97 → 0.58) Blunder. fxg3 was best. } (27. fxg3) 27... Kxf7 28. fxg3+ Kg8?? { (0.49 → 5.24) Blunder. Nf5 was best. } (28... Nf5 29. Nxb7 Rd5 30. Kh2 Re3 31. Rf3 Rxf3 32. gxf3 Bh6 33. Nc5 Bd2 34. Ne4 Nxd4 35. cxd4) 29. gxh4 Re2?! { (5.30 → 7.09) Inaccuracy. Re3 was best. } (29... Re3 30. Na4) 30. Nxb7 Rde8 31. Nc5 Bh6 32. Nxa6 Be3+ 33. Kh1 Bd2 34. c4 Kg7 35. Ra2 Bc3 36. Rxe2 Rxe2 37. c5 Bxd4 38. c6 Be5 39. c7 Rd2?! { (10.62 → Mate in 8) Checkmate is now unavoidable. Rc2 was best. } (39... Rc2 40. b5) 40. c8=Q Rd6 41. Qb7+ Kh6 42. b5?! { (Mate in 7 → 14.18) Lost forced checkmate sequence. Qe7 was best. } (42. Qe7 Rd5 43. Nc5 Rxc5 44. bxc5 Bf6 45. Qxf6 Kh7 46. Qe7+ Kh6 47. Qf8+ Kh7 48. Rf7#) 42... Bg3?! { (14.18 → Mate in 7) Checkmate is now unavoidable. Rf6 was best. } (42... Rf6 43. Rb1) 43. Nc5 Rd8 44. Rf7?? { (Mate in 6 → Mate in 2) Lost forced checkmate sequence. Ne6 was best. } (44. Ne6 Be5 45. Nxd8 Bf6 46. Nf7+ Kh7 47. Ng5+ Kg8 48. Qh7+ Kf8 49. Qf7#) 44... Rh8?? { (Mate in 2 → Mate in 4) Lost forced checkmate sequence. Rd1+ was best. } (44... Rd1+ 45. Rf1 Rxf1#) 45. Rf1?! { (Mate in 4 → 145.97) Lost forced checkmate sequence. Rg7 was best. } (45. Rg7 Be5 46. Ne6 Bf6 47. Qf7 Bxg7 48. Qxg7#) 45... Rg8?! { (145.97 → Mate in 5) Checkmate is now unavoidable. Re8 was best. } (45... Re8 46. Ne4) 46. Ne6 Be5 47. Qc6 Bh8 48. Qc1+ Kh7 49. Qg5 Bd4 50. Nf8+ Kg7 51. Ne6+ Kh7 52. Rf7+ Rg7 { Black wins on time. } 0-1