Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Open
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qa5+ 5. Nc3 Nf6 6. Bd3 *
Position (FEN): r1b1kb1r/pp1ppppp/2n2n2/q7/3NP3/2NB4/PPP2PPP/R1BQK2R b KQkq - 4 6
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 897
Best move: Nxd4