Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Advance_Variation
Moves: 1. e4 e6 2. d4 d5 3. e5 c5 4. Nf3 c4 5. Nc3 Nc6 6. Bg5 Be7 7. h4 h6 8. Bxe7
Ngxe7 9. Be2 Nf5 10. Qd2 a6 11. a3 Qb6 12. O-O-O Nfxd4 *
Position (FEN): r1b1k2r/1p3pp1/pqn1p2p/3pP3/2pn3P/P1N2N2/1PPQBPP1/2KR3R w kq - 0 13
White to move.
Themes:  Middlegame  
Puzzle rating: 1094
Best move: Nxd4