Chess puzzle (Checkmate)
Moves: 1. f4 d5 2. g3 e6 3. Bg2 Nf6 4. Nf3 a6 5. d3 b5 6. O-O Bb7 7. a4 c6 8. a5 Nbd7
9. Bd2 c5 10. e3 Be7 11. Nc3 O-O 12. b3 Rc8 13. Re1 Nb8 14. Ne5 Nc6 15. g4 Nxa5
16. g5 Ne8 17. h4 Nc6 18. Ng4 d4 19. Ne4 dxe3 20. Bxe3 Qc7 21. h5 Nd4 22. h6 g6
23. Ra2 Bxe4 24. Bxe4 Nd6 25. Rxa6 N6f5 26. Bc1 Bd6 27. Ne5 Bxe5 28. fxe5 Qxe5
29. Qg4 Qg3+ 30. Qxg3 Nxg3 31. Bb7 Rb8 32. Ra7 Nge2+ 33. Kf2 Nxc1 34. Rxc1 Nf5
35. Kf3 Rfd8 36. Be4 Nd4+ 37. Ke3 b4 38. Kd2 Re8 39. Rf1 Rf8 40. Rc7 Rbc8 41.
Rfxf7 Rxc7 42. Rxc7 Rf2+ 43. Ke1 Rxc2 44. Rg7+ Kf8 45. Rxh7 Nxb3 46. Rb7 Rh2
47. Bxg6 Nd4 48. Rf7+ Kg8 49. h7+ Kh8 50. Rf8+ Kg7 *
Position (FEN): 5R2/6kP/4p1B1/2p3P1/1p1n4/3P4/7r/4K3 w - - 3 51
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1666
Best move: Rg8#