Chess puzzle (Checkmate)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Levitsky_Attack
Moves: 1. d4 d5 2. Bg5 f6 3. Bh4 c5 4. dxc5 Nh6 5. e4 Qa5+ 6. Nc3 dxe4 7. f3 Nc6 8.
fxe4 Bg4 9. Qd2 Rd8 10. Qe3 e5 11. Bf2 Nd4 12. h3 *
Position (FEN): 3rkb1r/pp4pp/5p1n/q1P1p3/3nP1b1/2N1Q2P/PPP2BP1/R3KBNR b KQk - 0 12
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 649
Best move: Nxc2#