Chess puzzle (Advantage)
Opening: Philidor_Defense, Philidor_Defense_Exchange_Variation
Moves: 1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Bd7 5. c4 Nc6 6. Nc3 Nf6 7. Bd3 *
Position (FEN): r2qkb1r/pppb1ppp/2np1n2/8/2PNP3/2NB4/PP3PPP/R1BQK2R b KQkq - 4 7
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 1232
Best move: Nxd4