Chess puzzle (Advantage)
Opening: Vienna_Game, Vienna_Game_Other_variations
Moves: 1. e4 e5 2. Nc3 d6 3. d4 Nd7 4. dxe5 Nxe5 5. Bf4 Be7 6. Bc4 *
Position (FEN): r1bqk1nr/ppp1bppp/3p4/4n3/2B1PB2/2N5/PPP2PPP/R2QK1NR b KQkq - 3 6
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 796
Best move: Nxc4