Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Yates_Variation
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Bd3 *
Position (FEN): r1bqkb1r/pp2pppp/2np1n2/8/3NP3/2NB4/PPP2PPP/R1BQK2R b KQkq - 4 6
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 1010
Best move: Nxd4