Chess puzzle (Checkmate)
Opening: Scotch_Game, Scotch_Game_Other_variations
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nxd4 5. Qxd4 Nf6 6. Bc4 c5 7. Qd3 Qe7 8.
Nc3 a6 9. Bg5 b5 10. Nd5 Qxe4+ 11. Qxe4+ Nxe4 *
Position (FEN): r1b1kb1r/3p1ppp/p7/1ppN2B1/2B1n3/8/PPP2PPP/R3K2R w KQkq - 0 12
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 871
Best move: Nc7#