Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 d6 3. d4 Bg4 4. dxe5 Nc6 5. exd6 Bxd6 6. h3 Bh5 7. Bc4 Nf6 8.
O-O O-O 9. Nc3 Ne5 10. Be2 Bg6 11. Nxe5 Bxe5 12. Bg5 Qxd1 13. Raxd1 Bxc3 14.
bxc3 Nxe4 15. Bd2 Rad8 16. Bd3 Nc5 17. Bxg6 fxg6 18. Be3 Ne4 19. Bd4 b6 20. f3
Nf6 21. Rfe1 c5 22. Bxf6 gxf6 23. Rxd8 Rxd8 24. Re7 a5 25. Rb7 Rd6 26. Kf2 a4
27. Ke3 c4 28. Re7 h5 29. Re4 b5 30. Rd4 Re6+ 31. Re4 Rd6 32. Rd4 Rc6 33. Rd5
Rb6 34. Kd4 Kf7 35. Kc5 Rb8 36. Kb4 Re8 37. Rxb5 Re1 38. Kxc4 Re2 39. Rb2 Rxg2
40. Kb4 Rg3 41. Kxa4 Rxf3 42. c4 Rf4 43. Kb5 g5 44. a4 g4 45. hxg4 hxg4 46. a5
g3 47. c3 Rf2 48. Rb1 g2 49. Rg1 Rb2+ 50. Ka6 Ke7 51. Ka7 Kd7 52. a6 Kc7 53. c5
f5 54. Ka8 Ra2 55. a7 Re2 56. Rb1 g1=Q 57. Rxg1 *
Position (FEN): K7/P1k5/8/2P2p2/8/2P5/4r3/6R1 b - - 0 57
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 947
Best move: Re8#