Chess puzzle (Checkmate)
Moves: 1. b3 c5 2. Bb2 Nc6 3. Nf3 d6 4. e3 Nf6 5. d4 g6 6. dxc5 dxc5 7. Qxd8+ Nxd8 8.
Bxf6 exf6 9. Bb5+ Bd7 10. Bxd7+ Kxd7 11. Nc3 Ne6 12. O-O-O+ Kc6 13. Nd5 Bg7 14.
c4 Rad8 15. Kc2 f5 16. h4 h5 17. g3 a6 18. Ng5 Nxg5 19. hxg5 b5 20. Ne7+ Kc7
21. Nd5+ Kb7 22. a4 bxc4 23. bxc4 Kc6 24. Rb1 Rb8 25. a5 Be5 26. Rhd1 Bd6 27.
Nb6 Rhd8 28. Rd5 Bc7 29. Rbd1 Bxb6 30. axb6 Rxd5 31. Rxd5 Rxb6 32. Rd8 Rb7 33.
Ra8 Kb6 34. Kb3 Rd7 35. Rb8+ Ka5 36. Rf8 Rb7+ 37. Kc3 Ka4 38. Rc8 Rb3+ 39. Kc2
Ra3 40. Rxc5 Ra2+ 41. Kc3 Rxf2 42. Rc6 Rf3 *
Position (FEN): 8/5p2/p1R3p1/5pPp/k1P5/2K1PrP1/8/8 w - - 2 43
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 637
Best move: Rxa6#