Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Closed
Moves: 1. e4 c5 2. Nc3 Nc6 3. Bc4 Nd4 4. Nf3 e6 5. d3 a6 6. Be3 b5 7. Bxd4 *
Position (FEN): r1bqkbnr/3p1ppp/p3p3/1pp5/2BBP3/2NP1N2/PPP2PPP/R2QK2R b KQkq - 0 7
Black to move.
Themes:  Opening  
Puzzle rating: 838
Best move: cxd4