Chess puzzle (Checkmate)
Opening: French_Defense, French_Defense_Wing_Gambit
Moves: 1. e4 e6 2. Nf3 d5 3. e5 c5 4. b4 Nc6 5. a3 cxb4 6. axb4 Nxb4 7. c3 Nc6 8. d4
Bd7 9. Bd3 f6 10. O-O fxe5 11. Nxe5 g6 12. Nxg6 hxg6 13. Bxg6+ Ke7 14. Bg5+ Nf6
15. Qf3 Bg7 16. Nd2 Qc7 17. Bf4 Qd8 18. c4 Nxd4 *
Position (FEN): r2q3r/pp1bk1b1/4pnB1/3p4/2Pn1B2/5Q2/3N1PPP/R4RK1 w - - 0 19
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1629
Best move: Qa3#