Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Knight_Variation
Moves: 1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. Qe2+ Be7 5. d4 Nf6 6. Bg5 O-O 7. Bxf6 Bxf6
8. Qd2 Re8+ 9. Be2 Bg4 10. Qf4 Bxf3 11. Qxf3 Bxd4 12. Nc3 c6 13. O-O-O a5 *
Position (FEN): rn1qr1k1/1p3ppp/2p5/p2p4/3b4/2N2Q2/PPP1BPPP/2KR3R w - - 0 14
White to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1016
Best move: Rxd4