Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. Nf3 Be7 3. d4 d6 4. Bd3 Nd7 5. Bf4 f5 6. exf5 exf5 7. Bxf5 Ndf6 8.
Bd3 Bg4 9. Nbd2 Nd5 10. Bg3 Qd7 11. c3 Ngf6 12. Qb3 Qe6+ 13. Kd1 O-O-O 14. Re1
Qf7 15. Kc2 h6 16. Nh4 Be6 17. Rxe6 g5 18. Bf5 Kb8 19. Ng6 Rhe8 20. Nxe7 Rxe7
21. Rxe7 Qxe7 22. Bd3 Nf4 23. Bf1 N4d5 24. Qc4 Qd7 25. Re1 Nb6 26. Qe6 Qa4+ 27.
Kb1 Nfd5 28. h4 Nf4 29. Bxf4 gxf4 30. Qe7 Rc8 31. g3 Nd5 32. Qe6 Qa5 33. Nb3
Nxc3+ 34. bxc3 Qxc3 35. Rc1 Qb4 36. Bh3 Rf8 37. Qe7 Rh8 38. Qxc7+ Ka8 39. Qc8+
Rxc8 *
Position (FEN): k1r5/pp6/3p3p/8/1q1P1p1P/1N4PB/P4P2/1KR5 w - - 0 40
White to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 600
Best move: Rxc8#