Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Marshall_Defense
Moves: 1. d4 d5 2. c4 Nf6 3. Nc3 c6 4. cxd5 cxd5 5. Nf3 Bf5 6. Bg5 h6 7. Bh4 g5 8. Bg3
e6 9. Ne5 Bd6 10. Qa4+ Nbd7 *
Position (FEN): r2qk2r/pp1n1p2/3bpn1p/3pNbp1/Q2P4/2N3B1/PP2PPPP/R3KB1R w KQkq - 4 11
White to move.
Themes:  Middlegame  
Puzzle rating: 1256
Best move: Nxd7