Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bg5 Bg7 7. Qd2 Nc6 8.
Bb5 Bd7 9. O-O-O Nxd4 10. Bxd7+ Nxd7 11. Bh6 Bxh6 12. Qxh6 e5 13. Qg7 Qf6 14.
Qxf6 Nxf6 15. f4 Nxe4 16. Nxe4 O-O 17. Nxd6 Ne2+ 18. Kb1 Nxf4 19. Nxb7 Nxg2 20.
Rd2 Nf4 21. Rf1 Rab8 22. Nd6 Rfd8 23. Ne4 Rxd2 24. Nxd2 Rd8 25. Nc4 h5 26. Nxe5
Rd2 27. h4 Ng2 28. Kc1 Re2 29. Nxf7 Ne3 30. Rf3 Rxc2+ 31. Kb1 Re2 32. a3 Nf5
33. Ng5 Nxh4 34. Rc3 Nf5 35. Rc7 Re7 36. Rc6 Kg7 37. Ne6+ Kh6 38. b4 h4 39. Nf4
Re1+ 40. Kb2 Kg5 41. Ne6+ Kh5 42. Nf4+ Kg5 43. Ne6+ Kh6 44. Nf4 Nd4 45. Rxg6+
Kh7 46. Rg4 Nf3 47. Nh5 h3 48. Nf6+ Kh6 49. Rg3 Re2+ 50. Ka1 Ng5 51. Ng4+ Kh5
52. Nf6+ Kh4 *
Position (FEN): 8/p7/5N2/6n1/1P5k/P5Rp/4r3/K7 w - - 10 53
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 971
Best move: Rg4#