Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Kramnik_Variation
Moves: 1. e4 c5 2. Nf3 e6 3. c4 Nc6 4. Nc3 d6 5. d4 cxd4 6. Nxd4 Bd7 7. Bd3 *
Position (FEN): r2qkbnr/pp1b1ppp/2npp3/8/2PNP3/2NB4/PP3PPP/R1BQK2R b KQkq - 2 7
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 828
Best move: Nxd4