Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. Bc4 d6 4. d4 cxd4 5. Nxd4 Nf6 6. Bb5 Bd7 7. Bxc6 Bxc6 8.
Nxc6 bxc6 9. O-O Nxe4 10. Qf3 d5 11. Nc3 Nf6 12. Bf4 e6 13. Rad1 Bb4 14. a3 Ba5
15. b4 Bb6 16. Rfe1 O-O 17. Be5 Nd7 18. Bd6 Re8 19. Na4 e5 20. c4 Bd4 21. cxd5
cxd5 22. Qxd5 Nf6 23. Qc6 Rc8 24. Qa6 Rc2 25. Rf1 Re6 26. Qd3 Rxf2 27. Rxf2
Rxd6 28. Kf1 e4 29. Qb5 e3 30. Re2 Ne4 31. Qc4 Nd2+ 32. Rexd2 exd2 33. Rxd2
Qf6+ 34. Ke2 Qf2+ 35. Kd1 Qf6 36. Qc8+ Rd8 37. Qc7 Qf1+ 38. Kc2 Bf6 39. Rxd8+
Bxd8 *
Position (FEN): 3b2k1/p1Q2ppp/8/8/NP6/P7/2K3PP/5q2 w - - 0 40
White to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 679
Best move: Qxd8#