Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Rubinstein_Variation
Moves: 1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bd7 5. Bc4 Bc6 6. Qd3 f5 *
Position (FEN): rn1qkbnr/ppp3pp/2b1p3/5p2/2BPN3/3Q4/PPP2PPP/R1B1K1NR w KQkq - 0 7
White to move.
Themes:  Opening  
Puzzle rating: 2038
Best move: Ng5