Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Three_Knights_Variation
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Nc6 5. Bg5 Be7 6. e3 O-O 7. cxd5 Nxd5 8.
Bxe7 Qxe7 9. e4 Nb6 10. a3 Qf6 11. e5 Qd8 12. Bd3 Nxd4 *
Position (FEN): r1bq1rk1/ppp2ppp/1n2p3/4P3/3n4/P1NB1N2/1P3PPP/R2QK2R w KQ - 0 13
White to move.
Themes:  Opening  
Puzzle rating: 1396
Best move: Nxd4