Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Bf4 Nf6 3. e3 Bf5 4. Bd3 Bxd3 5. Qxd3 e6 6. h3 c6 7. Nf3 Bd6 8.
Bxd6 Qxd6 9. Ne5 Nbd7 10. Nxd7 Qxd7 11. Nd2 O-O 12. c3 Rfe8 13. O-O e5 14. dxe5
Rxe5 15. Nf3 Re7 16. Rad1 Ne4 17. c4 Nf6 18. cxd5 Qxd5 19. Qa3 Qe4 20. Rd4 Qe6
21. Rfd1 Rd7 22. Rxd7 Nxd7 23. Qb4 Nb6 24. a4 Qc4 25. Qe7 Qxa4 26. Rd8+ Rxd8 *
Position (FEN): 3r2k1/pp2Qppp/1np5/8/q7/4PN1P/1P3PP1/6K1 w - - 0 27
White to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 469
Best move: Qxd8#