Chess puzzle (Checkmate)
Moves: 1. d4 e6 2. c4 d5 3. Nc3 c5 4. Bf4 Qb6 5. Qc2 cxd4 6. Na4 Bb4+ 7. Bd2 Bxd2+ 8.
Qxd2 Qa6 9. b3 dxc4 10. Qxd4 cxb3 11. axb3 Nc6 12. Qxg7 Qa5+ 13. Qc3 Qxc3+ 14.
Nxc3 Bd7 15. Nb5 O-O-O 16. Nd6+ Kb8 17. Nxf7 Nf6 18. Nxh8 Rxh8 19. e3 Nb4 20.
Rc1 e5 21. Nf3 e4 22. Ne5 Be6 23. Bc4 Bxc4 24. Rxc4 Nd3+ 25. Nxd3 exd3 26. Kd2
Rd8 27. f3 Nd5 28. Rd4 Kc8 29. e4 Nf4 30. Rxd8+ Kxd8 31. g3 Ne6 32. Kxd3 Kc7
33. Rc1+ Kb6 34. b4 Kb5 35. Rb1 h5 36. f4 a5 37. bxa5+ Kxa5 38. Rxb7 Nc5+ 39.
Kc4 Nxb7 40. e5 Kb6 41. Kd5 Kc7 42. h3 Kd7 43. g4 hxg4 44. hxg4 Nd8 45. f5 Ke7
46. g5 Nf7 47. g6 Nh6 48. f6+ Kf8 49. e6 Ng4 50. e7+ Ke8 51. Ke6 Nh6 52. f7+
Nxf7 *
Position (FEN): 4k3/4Pn2/4K1P1/8/8/8/8/8 w - - 0 53
White to move.
Themes: Advanced Pawn, Attacking f2 or f7 Endgame Mate in 1 
Puzzle rating: 522
Best move: gxf7#