Chess puzzle (Checkmate)
Opening: French_Defense, French_Defense_Exchange_Variation
Moves: 1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Nc6 5. c3 Bd6 6. Nf3 h6 7. O-O Nge7 8. h3
Be6 9. a3 Qd7 10. Re1 g5 11. Ne5 Bxe5 12. dxe5 O-O-O 13. Be3 Nxe5 14. Bxa7 Nxd3
15. Qxd3 b6 *
Position (FEN): 2kr3r/B1pqnp2/1p2b2p/3p2p1/8/P1PQ3P/1P3PP1/RN2R1K1 w - - 0 16
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 640
Best move: Qa6#