Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Albin_Countergambit
Moves: 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Bb4+ 6. Nbd2 Qe7 7. a3 Ba5 8. b4
Nxe5 9. Nxe5 Qxe5 10. bxa5 Qxa5 11. Bg2 Nf6 12. O-O O-O 13. Nb3 Qc3 14. Qxd4
Qxd4 *
Position (FEN): r1b2rk1/ppp2ppp/5n2/8/2Pq4/PN4P1/4PPBP/R1B2RK1 w - - 0 15
White to move.
Themes:  Middlegame  
Puzzle rating: 683
Best move: Nxd4