Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Bc5 3. Bc4 Nc6 4. O-O d6 5. d3 Bg4 6. h3 h5 7. c3 Nf6 8. Nbd2
Qd7 9. b4 Bb6 10. a4 a6 11. b5 axb5 12. Bxb5 Bxh3 13. gxh3 Qxh3 14. Ng5 Qd7 15.
Bc4 d5 16. exd5 Nxd5 17. Qf3 f6 18. Bxd5 fxg5 19. c4 O-O-O 20. Re1 Nd4 21.
Bxb7+ Kb8 22. Qe4 Rhf8 23. Ba8 c6 24. a5 Bc7 25. Bxc6 Nxc6 26. Rb1+ Ka7 27. Nf3
Bxa5 28. Be3+ Ka6 29. Ra1 Qc7 30. Reb1 g4 31. Rb6+ Qxb6 32. Bxb6 Kxb6 33. Qe3+
Nd4 34. Nxe5 Rfe8 35. Rb1+ Kc5 36. Qg5 Kd6 37. Nf7+ Kc7 38. Nxd8 Rxd8 39. Qe5+
Kc8 40. Rb8+ Kd7 41. Rb7+ Kc6 42. Qe6+ Kxb7 43. Qe7+ Kc8 44. Qxg7 Nf3+ 45. Kg2
Rxd3 46. Qg6 Rd1 47. Qf5+ Kb7 48. Qxa5 *
Position (FEN): 8/1k6/8/Q6p/2P3p1/5n2/5PK1/3r4 b - - 0 48
Black to move.
Themes:  Endgame Hook Mate, Mate in 1 
Puzzle rating: 997
Best move: Rg1#