Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 Nf6 5. Nc3 Bb4 6. Bd2 O-O 7. O-O-O Re8
8. Bc4 Na5 9. Bd3 d6 10. a3 Bc5 11. Qg3 Nc6 12. Bg5 Bd4 13. Nge2 h6 14. Bxh6
Nh5 15. Qf3 g6 16. g4 Ng7 17. h3 Qf6 18. Qxf6 Bxf6 19. Nd5 Bd8 20. f4 Be6 21.
Nec3 Nb8 22. f5 Bxd5 23. exd5 Bf6 24. fxg6 Bxc3 25. gxf7+ Kxf7 26. bxc3 Nd7 27.
c4 Ne5 28. Rhf1+ Kg8 29. g5 Rf8 30. Kd2 Rxf1 31. Rxf1 Rf8 32. Rxf8+ Kxf8 33.
Ke3 Kf7 34. h4 Nh5 35. Be2 Ng7 36. h5 Nf5+ 37. Ke4 Ng3+ 38. Ke3 Nf5+ 39. Kd2 b6
40. g6+ Kf6 41. Bf4 Ng7 42. h6 Kxg6 43. hxg7 Kxg7 44. Bxe5+ dxe5 45. Ke3 Kf6
46. Ke4 a6 47. Bg4 a5 48. a4 c6 49. d6 c5 50. d7 Ke7 51. Kxe5 Kd8 52. Kd5 b5
53. axb5 a4 54. b6 a3 55. Kd6 a2 56. b7 a1=Q *
Position (FEN): 3k4/1P1P4/3K4/2p5/2P3B1/8/2P5/q7 w - - 0 57
White to move.
Themes: Advanced Pawn Endgame Mate in 1 Promotion
Puzzle rating: 816
Best move: b8=Q#