Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Nxc6 bxc6 7. Bg5 Nf6 8.
Qd2 O-O 9. Bh6 d6 10. Bxg7 Kxg7 11. O-O-O a5 12. a4 Rb8 13. f3 Qb6 14. b3 Ba6
15. h4 Bxf1 16. Rdxf1 Qb4 17. g4 d5 18. h5 d4 19. hxg6 Qa3+ 20. Kd1 Qa1+ 21.
Ke2 Qxc3 22. Qh6+ Kh8 23. g7+ Kg8 24. gxf8=Q+ Rxf8 25. Rc1 Rd8 26. e5 d3+ 27.
cxd3 Qxd3+ 28. Kf2 Qd4+ 29. Qe3 Qxe3+ 30. Kxe3 Nd5+ 31. Kf2 Nf4 32. Rxc6 Nd3+
33. Kg3 Nxe5 34. Rch6 Rd3 35. Rxh7 Rxf3+ 36. Kg2 Rxb3 37. Rh8+ Kg7 38. R1h7+
Kf6 39. Ra8 Nxg4 40. Ra6+ e6 41. Rxa5 Ra3 42. Ra7 Ne3+ 43. Kg1 Ra1+ 44. Kf2
Ng4+ 45. Ke2 Ra2+ 46. Ke1 Ra1+ 47. Kd2 Ra2+ 48. Kc1 Ra1+ 49. Kb2 Re1 50. Raxf7+
Ke5 51. Rh5+ Kd6 52. a5 Re2+ 53. Ka3 Re3+ 54. Kb4 Re4+ 55. Kb5 Ne5 56. Ra7 Nc6
57. Ra6 *
Position (FEN): 8/8/R1nkp3/PK5R/4r3/8/8/8 b - - 10 57
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 815
Best move: Rb4#