Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nf3 Bd6 5. Bg3 Nc6 6. c3 Bd7 7. Nbd2 Qe7 8. Bd3
Bxg3 9. hxg3 O-O-O 10. a4 e5 11. dxe5 Nxe5 12. Nxe5 Qxe5 13. Nf3 Qe7 14. b4 Ne4
15. Qc2 f5 16. Nd4 g5 17. b5 Nc5 18. Bxf5 Bxf5 19. Qxf5+ Kb8 20. a5 Rdf8 21.
Qc2 Ne4 22. O-O h5 23. Qb2 g4 24. Nc6+ bxc6 25. bxc6+ Kc8 26. Qb7+ Kd8 *
Position (FEN): 3k1r1r/pQp1q3/2P5/P2p3p/4n1p1/2P1P1P1/5PP1/R4RK1 w - - 3 27
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 584
Best move: Qa8#