Chess puzzle (Checkmate)
Opening: Russian_Game, Russian_Game_Stafford_Gambit
Moves: 1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nc6 4. Nxc6 dxc6 5. e5 Ne4 6. d4 h5 7. Bc4 Bg4 8.
f3 Qh4+ 9. Kf1 *
Position (FEN): r3kb1r/ppp2pp1/2p5/4P2p/2BPn1bq/5P2/PPP3PP/RNBQ1K1R b kq - 2 9
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 815
Best move: Qf2#