Chess puzzle (Advantage)
Opening: Zukertort_Opening, Zukertort_Opening_Queens_Gambit_Invitation
Moves: 1. Nf3 e6 2. d4 Be7 3. e4 Nf6 4. e5 Nd5 5. c4 Nb6 6. Bd3 Bb4+ 7. Nbd2 h6 8. O-O
O-O 9. Ne4 d5 10. exd6 cxd6 11. a3 d5 12. axb4 dxe4 13. Bxe4 Nxc4 14. Bf4 a6
15. Qe2 Nd6 16. Bd3 Nc6 17. b5 Ne7 18. bxa6 bxa6 *
Position (FEN): r1bq1rk1/4npp1/p2np2p/8/3P1B2/3B1N2/1P2QPPP/R4RK1 w - - 0 19
White to move.
Themes:  Middlegame  
Puzzle rating: 1714
Best move: Bxd6