Chess puzzle (Checkmate)
Moves: 1. b3 Nf6 2. Bb2 g6 3. e4 Bg7 4. e5 Nd5 5. c4 Nb6 6. d4 d6 7. f4 O-O 8. h4 dxe5
9. fxe5 c5 10. d5 Bf5 11. h5 N8d7 12. Nf3 Qc7 13. Nbd2 Nxe5 14. hxg6 fxg6 15.
Qc1 e6 16. Nh4 exd5 17. Nxf5 Rxf5 18. Be2 Re8 19. Kd1 dxc4 20. Nxc4 Nexc4 21.
Bxc4+ Nxc4 22. Qxc4+ Qf7 23. Qxf7+ Rxf7 24. Bxg7 Kxg7 25. Rc1 b6 26. Rc2 Ref8
27. Re1 Rf1 28. Rxf1 Rxf1+ 29. Ke2 Rf7 30. Kd3 h5 31. Kc4 g5 32. Kb5 g4 33. a4
Kg6 34. a5 Rf6 35. Ka6 h4 36. Kxa7 bxa5 37. Rc4 Kg5 38. Rxc5+ Rf5 39. Rc2 h3
40. gxh3 gxh3 41. Ka6 Kg4 42. Rc4+ Kg3 43. Rc3+ Kg2 44. Rc2+ Rf2 45. Rc8 h2 46.
Rg8+ Kf1 47. Rh8 Kg1 48. Kxa5 h1=Q 49. Rxh1+ Kxh1 50. b4 Kg2 51. b5 Kf3 52. b6
Ke4 53. b7 Rb2 54. Ka6 Kd5 55. Ka7 Kc6 56. b8=Q *
Position (FEN): 1Q6/K7/2k5/8/8/8/1r6/8 b - - 0 56
Black to move.
Themes:  Endgame, Queen and Rook Endgame Mate in 1 
Puzzle rating: 1340
Best move: Ra2#