Chess puzzle (Checkmate)
Moves: 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d3 c6 5. Bd2 Qc7 6. Nf3 e5 7. Qe2 Nd7 8.
O-O-O Ngf6 9. d4 Bd6 10. dxe5 Nxe5 11. Nxe5 Bxe5 12. f4 Bg4 13. Qe3 Bxd1 14.
Nxd1 O-O 15. fxe5 Ng4 16. Qg3 Nxe5 17. Bf4 Rfe8 18. Bd3 Nxd3+ 19. cxd3 Qd8 20.
h4 Re6 21. h5 g6 22. hxg6 Rxg6 23. Qh3 Qf6 24. Qxh7+ Kf8 25. Qh8+ Qxh8 26.
Rxh8+ Rg8 27. Rh7 Rxg2 28. Bd6+ Kg8 29. Rh3 Rd8 30. Be7 Rd5 31. Bf6 Kf8 32. d4
Rf5 33. Be5 Rf1 34. Rd3 Ke7 35. d5 cxd5 36. Rc3 Ke6 37. Bd4 b6 38. Re3+ Kd6 39.
Rd3 f5 40. Rh3 Re2 41. Rh6+ Ke7 42. Rh7+ Kd6 43. Rh6+ Kd7 44. Rh7+ Kc6 45. Bc3
d4 46. Bd2 a5 47. Rh6+ Kc5 48. b3 Rg2 49. Rh8 Rgg1 50. Rc8+ Kb5 51. a4+ Ka6 52.
Kb2 Rxd1 53. Bc1 Rg2+ 54. Kb1 f4 55. Rc7 f3 56. b4 f2 *
Position (FEN): 8/2R5/kp6/p7/PP1p4/8/5pr1/1KBr4 w - - 0 57
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 910
Best move: b5#