Chess puzzle (Checkmate)
Opening: Benko_Gambit_Declined, Benko_Gambit_Declined_Bishop_Attack
Moves: 1. d4 Nf6 2. c4 c5 3. d5 b5 4. Bg5 d6 5. Nc3 b4 6. Nb5 a6 7. Qa4 Bb7 *
Position (FEN): rn1qkb1r/1b2pppp/p2p1n2/1NpP2B1/QpP5/8/PP2PPPP/R3KBNR w KQkq - 2 8
White to move.
Themes: Double Check Opening Mate in 1 
Puzzle rating: 572
Best move: Nc7#