Chess puzzle (Checkmate)
Opening: Russian_Game, Russian_Game_Stafford_Gambit
Moves: 1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nc6 4. Nxc6 dxc6 5. Nc3 Bc5 6. h3 h5 7. d3 O-O 8.
Bg5 Re8 9. Bxf6 Qxf6 10. f3 Qh4+ 11. Ke2 *
Position (FEN): r1b1r1k1/ppp2pp1/2p5/2b4p/4P2q/2NP1P1P/PPP1K1P1/R2Q1B1R b - - 2 11
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1111
Best move: Qf2#