Here is a very special chess game of mine with brief annotations against a player rated 200 above me.
1. d4 g6 2. e4 Bg7 3. Nf3 d5 4. exd5 Qxd5 5. Nc3 Qd8 6. Bg5 Nf6 7. Bc4 O-O
Black should have continued 3. Nf3 d6: by now I am in control of the board.
8. O-O e6 9. Ne4 h6 10. Nxf6+ Bxf6 11. Bxh6 Bg7 12. Qd2 c5 13. c3 Re8 14. Bd3 cxd4 15. Bxg7 Kxg7 16. cxd4 Nc6 17. Bb5 a6
Possibly my only mistake, allowing black to gain some momentum through my indecisiveness with the dark-squared bishop.
18. Be2 Rh8 19. Rfd1 Ne7 20. Qc3 Nd5 21. Qb3 Nf4 22. Rd2 b5 23. Qe3 Nd5 24. Qe5+ f6 25. Qe4 Ra7 26. Rc1 Bb7 27. Qxe6 Re8
Note that black's light-squared bishop has remained undeveloped up to this point.
28. Qg4 Bc8 29. Qg3 Rh8 30. Bd3 Rh6 31. Nh4 Ne7 32. Bb1 g5 33. Nf3 Bf5 34. Bxf5 Nxf5 35. Qg4 Kg6 36. Rc5 Qd7 37. Qe4 Rc7
Black's knight is a goner.
38. Rd5 Qc8 39. g4 Rc1+ 40. Kg2 Kg7 41. Rxf5 Qc7 42. d5 Ra1
If black can bring his queen down to c1 he can steal a checkmate.
43. Rc2 Qd6 44. Rc6 Qd8 45. Qe6 Rd1 46. Rxg5+ fxg5
This beautiful move creates a multitude of variations, all of which end with checkmate.
47. Qxh6+ Kf7 48. Nxg5+ Ke7 49. Qe6+ Kf8 50. Qf7# 1-0