Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Four_Knights_Variation
Moves: 1. e4 c5 2. Nc3 e6 3. Nf3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Bg5 Be7 7. Qf3 *
Position (FEN): r1bqk2r/pp1pbppp/2n1pn2/6B1/3NP3/2N2Q2/PPP2PPP/R3KB1R b KQkq - 4 7
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 930
Best move: Nxd4