Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Normal_Variation
Moves: 1. e4 e6 2. d4 b6 3. c4 d6 4. Nc3 Bb7 5. Bf4 Be7 6. Nf3 Nf6 7. Bd3 Nbd7 8. O-O
O-O 9. Re1 Re8 10. e5 Bxf3 *
Position (FEN): r2qr1k1/p1pnbppp/1p1ppn2/4P3/2PP1B2/2NB1b2/PP3PPP/R2QR1K1 w - - 0 11
White to move.
Themes:  Opening  
Puzzle rating: 1109
Best move: Qxf3