Chess puzzle (Crushing)
Opening: Van_Geet_Opening, Van_Geet_Opening_Reversed_Nimzowitsch
Moves: 1. Nc3 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe4+ Be7 5. Bg5 Nf6 6. O-O-O *
Position (FEN): r1bqk2r/ppppbppp/2n2n2/6B1/4Q3/2N5/PPP1PPPP/2KR1BNR b kq - 6 6
Black to move.
Themes:  Opening  
Puzzle rating: 523
Best move: Nxe4