Chess puzzle (Checkmate)
Opening: Russian_Game, Russian_Game_Italian_Variation
Moves: 1. e4 e5 2. Bc4 Nf6 3. Nf3 Nxe4 4. Nxe5 Qf6 5. Qf3 Qxe5 6. Qxf7+ Kd8 7. O-O Bd6
8. f4 Qd4+ 9. Kh1 Nf2+ 10. Kg1 Nh3+ 11. Kh1 Qg1+ 12. Rxg1 *
Position (FEN): rnbk3r/pppp1Qpp/3b4/8/2B2P2/7n/PPPP2PP/RNB3RK b - - 0 12
Black to move.
Themes:  Opening Mate in 1, Smothered Mate 
Puzzle rating: 939
Best move: Nf2#