Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. Nc3 d5 3. g3 Nf6 4. Bg2 c6 5. d3 Bb4 6. Bd2 O-O 7. f4 d4 8. Nce2
Bxd2+ 9. Qxd2 c5 10. Nf3 Nc6 11. O-O Re8 12. Nh4 Bd7 13. f5 exf5 14. Nxf5 Bxf5
15. Rxf5 Re5 16. Raf1 Rxf5 17. Rxf5 Nd7 18. Qf4 f6 19. g4 Nde5 20. g5 fxg5 21.
Rxg5 Ng6 22. Qf5 Qe7 23. Nf4 Nxf4 24. Qxf4 Rf8 25. Qg3 Nd8 26. e5 Ne6 27. Bd5
g6 28. Qg4 Re8 29. Qg2 b6 30. Rg4 Kg7 31. Qh3 Nc7 32. Rh4 Rh8 33. Bc4 b5 34.
Bb3 a5 35. a4 b4 36. Re4 Qg5+ 37. Qg2 Qc1+ 38. Qf1 Qg5+ 39. Kh1 Rf8 40. Qe1 Qh5
41. Qg3 Rf3 42. Qg4 Rf1+ 43. Kg2 Qxg4+ 44. Rxg4 Rb1 45. Re4 Rxb2 46. e6 Kf6 47.
e7 Ne8 48. Re2 Rb1 49. Re6+ Kf5 50. Rc6 Re1 51. Rxc5+ Kf6 52. Rxa5 Rxe7 53. Rd5
Re2+ 54. Kg3 Re3+ 55. Kg4 h5+ 56. Kh4 Ng7 57. Rxd4 *
Position (FEN): 8/6n1/5kp1/7p/Pp1R3K/1B1Pr3/2P4P/8 b - - 0 57
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 817
Best move: g5#