Chess puzzle (Checkmate)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Mason_Variation
Moves: 1. d4 d5 2. Bf4 Bf5 3. e3 Nc6 4. c4 Nf6 5. a3 e6 6. Nc3 Bd6 7. Bxd6 Qxd6 8. c5
Qe7 9. Bd3 Ne4 10. f3 Qh4+ 11. Kf1 *
Position (FEN): r3k2r/ppp2ppp/2n1p3/2Pp1b2/3Pn2q/P1NBPP2/1P4PP/R2Q1KNR b kq - 2 11
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1243
Best move: Qf2#