Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3 d6 6. c3 h6 7. a4 a6 8. Nbd2
O-O 9. h3 Be6 10. Bxe6 fxe6 11. b4 Ba7 12. Re1 Qe8 13. Ra2 Qh5 14. Nf1 Qg6 15.
Nh4 Qf7 16. Nf3 Nh5 17. Be3 Nf4 18. Bxf4 Qxf4 19. Ne3 Rf6 20. Nh2 Raf8 21. Qg4
Bxe3 22. Rxe3 g5 23. g3 Qxg4 24. Nxg4 Rg6 25. b5 Na5 26. bxa6 bxa6 27. Rb2 h5
28. Nh2 Rgf6 29. Re1 Nc6 30. Rb7 R8f7 31. Re2 Kg7 32. Nf1 d5 33. Nd2 g4 34. h4
Kf8 35. Nb3 Ke7 36. Nc5 Kd6 37. Nxa6 d4 38. c4 Rf3 39. Rd2 Na5 40. Rb5 Nc6 41.
Nb4 Ne7 42. Rb8 Kc5 43. a5 Nc8 44. Na6+ Kc6 45. Rxc8 Kb7 46. Rb8+ Kxa6 47. Rdb2
Ka7 48. R8b3 Ka6 49. c5 Rf8 50. c6 R8f7 51. Kf1 Rxg3 52. Rb8 Ka7 53. a6 Rxd3
54. R8b7+ Kxa6 55. Ra2+ Ra3 *
Position (FEN): 8/1Rp2r2/k1P1p3/4p2p/3pP1pP/r7/R4P2/5K2 w - - 2 56
White to move.
Themes: Hanging Piece Endgame, Rook Endgame Mate in 1 
Puzzle rating: 924
Best move: Rxa3#