Chess puzzle (Checkmate)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Other_variations
Moves: 1. d4 f6 2. e4 d6 3. Nc3 Nc6 4. Bc4 e6 5. Be3 Nge7 6. Qh5+ g6 7. Qh3 f5 8. exf5
exf5 9. Nge2 f4 10. Qf3 d5 11. Nxd5 fxe3 *
Position (FEN): r1bqkb1r/ppp1n2p/2n3p1/3N4/2BP4/4pQ2/PPP1NPPP/R3K2R w KQkq - 0 12
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1531
Best move: Nf6#