Chess puzzle (Checkmate)
Opening: Scandinavian_Defense, Scandinavian_Defense_Other_variations
Moves: 1. e4 d5 2. e5 Nc6 3. c3 Bf5 4. d4 f6 5. Nf3 fxe5 6. Nxe5 Nxe5 7. dxe5 e6 8.
Bd3 Bxd3 9. Qxd3 Bc5 10. Be3 Bxe3 11. fxe3 Ne7 12. O-O Qd7 13. b4 O-O-O 14. a4
Nc6 15. b5 Nxe5 16. Qd4 Nc4 17. Nd2 e5 18. Qxa7 Nxd2 *
Position (FEN): 2kr3r/Qppq2pp/8/1P1pp3/P7/2P1P3/3n2PP/R4RK1 w - - 0 19
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 770
Best move: Qa8#