Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Bc4 Nf6 3. Qf3 Nc6 4. c3 d6 5. h3 Be6 6. Bb5 Qd7 7. d3 a6 8. Ba4 b5
9. Bc2 d5 10. Bg5 Be7 11. Bxf6 Bxf6 12. Nd2 d4 13. c4 bxc4 14. Nxc4 O-O 15. a3
Rfb8 16. Rb1 Bxc4 17. dxc4 Na5 18. Qd3 Qc6 19. b3 Nb7 20. b4 Nd6 21. c5 Nb5 22.
Ba4 Qb7 23. Rc1 c6 24. Nf3 Nc3 25. O-O Nxa4 26. Qb3 Nxc5 27. Rxc5 Qc7 28. Rfc1
Rb6 29. Qa4 Rc8 30. Nh2 h6 31. Ng4 Rb5 32. Nxf6+ gxf6 33. Rxc6 Qxc6 34. Rxc6
Rxc6 35. Kf1 d3 36. Ke1 Rc1+ 37. Kd2 Rc2+ 38. Kxd3 Rxf2 39. Qxa6 Rb8 40. Qd6
Ra8 41. Ke3 Rxg2 42. Qxf6 *
Position (FEN): r5k1/5p2/5Q1p/4p3/1P2P3/P3K2P/6r1/8 b - - 0 42
Black to move.
Themes:  Endgame, Queen and Rook Endgame Mate in 1 
Puzzle rating: 1292
Best move: Rxa3#