Chess puzzle (Checkmate)
Moves: 1. h4 d5 2. h5 h6 3. d4 Bf5 4. e3 Nf6 5. Bd3 e6 6. f3 c5 7. c3 Nc6 8. g4 Bxd3
9. Qxd3 Qb6 10. Ne2 Bd6 11. a3 a6 12. b4 cxb4 13. axb4 Qc7 14. Kf2 O-O 15. Nd2
Ne7 16. Nf1 Nh7 17. Bd2 Ng5 18. Nfg3 Rac8 19. f4 Nh7 20. b5 axb5 21. Qxb5 f5
22. gxf5 Nxf5 23. Nxf5 Rxf5 24. Rag1 Ng5 25. Ng3 Rf7 26. Ke2 Nh7 27. Qd3 Nf6
28. Rb1 Nd7 29. Rb2 Nb6 30. Rhb1 Nc4 31. Rxb7 Qxb7 32. Rxb7 Rxb7 33. Qg6 Re7
34. e4 Ra8 35. e5 Ba3 36. f5 exf5 37. Nxf5 Rb7 38. Nxh6+ Kh8 39. Nf7+ Kg8 40.
Ng5 Rab8 41. Qh7+ Kf8 42. Qh8+ Ke7 43. Qxg7+ Kd8 44. Ne6+ Kc8 45. Qg8+ Kd7 46.
Qf7+ Kc6 47. Qg6 Kb5 48. Nf4 Ka5 49. Nxd5 Rb2 50. Qc6 Rxd2+ 51. Ke1 *
Position (FEN): 1r6/8/2Q5/k2NP2P/2nP4/b1P5/3r4/4K3 b - - 1 51
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 792
Best move: Rb1#