Chess puzzle (Checkmate)
Opening: Four_Knights_Game, Four_Knights_Game_Spanish_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. Nxe5 Nxb5 6. Nxb5 Nxe4 7. Qh5 g6
8. Nxg6 fxg6 9. Qe5+ Qe7 10. Qxh8 Nc3+ 11. Kf1 Qe2+ 12. Kg1 *
Position (FEN): r1b1kb1Q/pppp3p/6p1/1N6/8/2n5/PPPPqPPP/R1B3KR b q - 4 12
Black to move.
Themes:  Middlegame Back Rank Mate, Mate in 1 
Puzzle rating: 760
Best move: Qd1#