Chess puzzle (Checkmate)
Opening: Queens_Gambit_Accepted, Queens_Gambit_Accepted_Other_variations
Moves: 1. d4 d5 2. c4 dxc4 3. Nc3 a6 4. e4 Nc6 5. Bxc4 Qxd4 6. Be3 Qxc4 7. Nd5 Bg4 *
Position (FEN): r3kbnr/1pp1pppp/p1n5/3N4/2q1P1b1/4B3/PP3PPP/R2QK1NR w KQkq - 2 8
White to move.
Themes:  Opening Mate in 1 
Puzzle rating: 937
Best move: Nxc7#