Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Winawer_Variation
Moves: 1. d4 e6 2. e4 d5 3. Nc3 Bb4 4. Bd3 Nc6 5. Nf3 dxe4 6. Bxe4 Nf6 7. Bd3 Nxd4 *
Position (FEN): r1bqk2r/ppp2ppp/4pn2/8/1b1n4/2NB1N2/PPP2PPP/R1BQK2R w KQkq - 0 8
White to move.
Themes:  Opening  
Puzzle rating: 1394
Best move: Nxd4