Chess puzzle (Checkmate)
Opening: Scandinavian_Defense, Scandinavian_Defense_Other_variations
Moves: 1. e4 d5 2. Qf3 Nf6 3. exd5 Nxd5 4. Bc4 Nf6 5. d3 h6 6. Bf4 e6 7. Nd2 Bd6 8.
Be3 Nc6 9. O-O-O O-O 10. Ne4 Nxe4 11. dxe4 Ne5 12. Qe2 Nxc4 13. Qxc4 Qf6 14.
Qe2 b6 15. Qg4 Bb7 16. f3 Rad8 17. Nh3 Ba3 18. bxa3 *
Position (FEN): 3r1rk1/pbp2pp1/1p2pq1p/8/4P1Q1/P3BP1N/P1P3PP/2KR3R b - - 0 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1026
Best move: Qa1#