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1. d4 Nf6 2. Bf4 c5 3. e3 Qb6 4. Nc3 cxd4 5. exd4 Qxb2 6. Nb5 Na6 7. a3 Nd5 8. Bc4 { I'm aware this was a blunder because of Nc3, but fortunately they didn't see it} 8... Nxf4 9. Rb1 Qxb1 10. Qxb1 Nxg2+ 11. Kf1 Nf4 12. Qc1 Ng6 13. Qe3 e6 14. Nf3 b6 15. Qe4 { This was the big mistake.} 15... Rb8 16. Nxa7 Bb7 17. Qe3 Bd6 18. Nb5 Bf4 19. Qc3 { This was another blunder, I had some hopes of creating discoveries against g7, but it ended up walking into a pin next move and the tactics worked against me because of it} 19... Rc8 20. Ne5 O-O 21. Nxd7 Bxh1 22. Nxf8 Nxf8 23. f3 { I had calculated this as trapping his bishop a few moves prior, not realising they had Bxh2... doh} 23... Bxh2 24. Qd3 Ng6 25.Nc3 Nf4 26. Qe4 Bg2+ 27. Kf2 Nc7 28. Bd3 f5 29. Qb7 Rd8 30. Qxb6 Bh3 31. Nb5 Nfd5 32. Qc6 Bf4 33. Nxc7 Nxc7 34. Bc4 Kf7 35. a4 Rxd4 36. Bb3 Rd2+ 37. Ke1 Rh2 38. Qd7+ Kg6 39. Bxe6 Rh1+ 40. Ke2 Rh2+ 41. Ke1 Bg3+ 42. Kd1 Rh1+ 43. Ke2 Bf1+ 44. Ke3 f4+ 45. Ke4 Nxe6 46. Qxe6+ Kh5 47. Qf5+ Kh6 48. Qe6+ g6 49. Qf6 Bh3 50.Qf8+ Kh5 51. Qg7 Bf5+ 52. Ke5 Re1+ 53. Kf6 Bh4+ 54. Kf7 Re7+ 55. Kg8 Be6+ 56.Kxh7 Rxg7+ 57. Kxg7 g5 58. a5 Bd5 59. a6 Bxf3 60. a7 Ba8 61. c4 f3 62. c5 f2 63. c6 Bxc6 64. Kf6 f1=Q+ 65. Ke5 Ba8 0-1
I've been trying to break 1700 on rapid for a while now. I just played this game where I was winning, but threw my advantage away on move 15. 15. Qe4 was the big mistake. I was winning up until then. I played it quickly as it just felt natural, stopping his bishop from fianchettoing. I knew that he had very little moves. He can't move the knight on a6, the knight on g6 can only go to e2, he can only move the dark-squared bishop to e2 and can't move the light-squared bishop. I assumed I could just take the a7 pawn when he moved his rook (I couldn't obviously), but after looking at it I understand why, as it develops his dark-squared. The thing is that the computer gives h4 as the best move here, and I don't really know why. I'm assuming it's to try and creates weaknesses on the kingside, but how are you supposed to know when to do that, and why is it better?