Chess puzzle (Checkmate)
Opening: Philidor_Defense, Philidor_Defense_Other_variations
Moves: 1. e4 e5 2. Nf3 d6 3. Bc4 Be7 4. d4 Nc6 5. dxe5 Nxe5 6. Nxe5 dxe5 7. Qf3 Nf6 8.
Bg5 Bg4 9. Qb3 *
Position (FEN): r2qk2r/ppp1bppp/5n2/4p1B1/2B1P1b1/1Q6/PPP2PPP/RN2K2R b KQkq - 5 9
Black to move.
Themes:  Opening Mate in 1 
Puzzle rating: 1190
Best move: Qd1#