[Event "Nova Scotia Open"] [Site "https://lichess.org/study/9FYQ1QDg/qP3XZPLc"] [Date "2019.05.13"] [White "Elfred Duray"] [Black "Roger Langen"] [Result "0-1"] [WhiteElo "1833"] [BlackElo "2092"] [Variant "Standard"] [ECO "B02"] [Opening "Alekhine Defense: Two Pawns Attack"] [Annotator "https://lichess.org/@/countersparks"] [StudyName "Langen Nova Scotia Open 2019"] [ChapterName "Elfred Duray - Roger Langen"] [Source "https://lichess.org/study/9FYQ1QDg/qP3XZPLc"] [Orientation "black"] 1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. Nc3 c5 { 4...d6 is best } 5. a4 d6 { Now 5...d5 is best } 6. a5 N6d7 7. exd6 exd6 { 7...Ne5! is strong, giving a pawn for play } 8. Nd5 Nf6 { 8...Nc6 is more direct } 9. Qe2+ Be6 { 9...Be7 is better } 10. d3 { 10 Nf4 is indicated } 10... Nc6 11. Nf3 Be7 12. Nxe7 Qxe7 13. Bg5 O-O 14. g3 Rfe8 { After 14...Rfe8 - White's blocked kingside development is suddenly a problem } 15. Be3 Bg4 16. Bg2 Nd4 { 16...d5! first is necessary } 17. Qd1 Nxf3+ { 17...Nd5! is the computer move, clearing the f6 square for the Queen, and maintaining a strong advantage. Black's last two moves have let White off the hook. } 18. Bxf3 Bxf3 19. Qxf3 Qd7 { 19...Nd7 is good } 20. O-O Ng4 21. Kg2 Ne5 { 21...Qc6! is better } 22. Qd5 Qc6 23. Qxc6 Nxc6 24. Bf4 Re6 { 24...Rad8 is accurate } 25. Rfe1 Rae8 26. Kf1 Kf8 27. Rxe6 Rxe6 28. Re1 Ke7 29. Bd2 Rxe1+ 30. Bxe1 Ke6 31. Bc3 f6 32. Ke2 d5 33. b3 h5 { 33...d4 intending 34...g5 is better } 34. f4 d4 35. Bd2 g6 36. Kf3 f5 37. Ke2 Kd6 38. Kd1 Kc7 { With 38...Kc7, Black offered a draw / 45 ab was required. Thinking he can break through on the kingside, White drops a pawn on the queenside. The error was made after long thought. } 39. Kc2 Nb4+ 40. Bxb4 cxb4 41. Kd2 Kc6 42. h3 Kc5 43. Ke2 Kc6 44. Kf3 b6 45. a6 b5 46. g4 h4 47. g5 Kb6 48. Ke2 Kxa6 49. Kd2 Kb6 50. Kc2 bxc4 { 50...a5! is simpler } 51. bxc4 Ka5 52. Kb3 a6 53. Kb2 { 53 c5 is a better try but still loses } 53... Ka4 54. Ka2 a5 55. Kb2 b3 56. c5 Kb5 57. Kxb3 Kxc5 58. Ka4 Kb6 59. Kb3 Kb5 60. Ka3 a4 { After 60...a4, the light finally dawned. My opponent gave me a look and resigned a move later. } 61. Ka2 Kb4 { Note: My opponent, a Filipino entrepreneur in Halifax, was a point behind me going into this round. A win would have helped him share first place, which is why he declined the draw. } 0-1