Chess puzzle (Advantage)
Moves: 1. e4 d5 2. exd5 Nf6 3. d4 Qxd5 4. Nc3 Qd8 5. h3 Nc6 6. Nf3 b6 7. Bf4 Bb7 8.
Nb5 Nd5 9. Bg3 a6 10. Na3 e6 11. c3 Bxa3 12. bxa3 Nxc3 13. Qd2 Nd5 14. Bd3 O-O
15. Ng5 h6 16. Nh7 Re8 17. O-O Nxd4 18. Rfe1 Nf6 19. Nxf6+ Qxf6 20. Be5 Qd8 *
Position (FEN): r2qr1k1/1bp2pp1/pp2p2p/4B3/3n4/P2B3P/P2Q1PP1/R3R1K1 w - - 2 21
White to move.
Themes:  Middlegame  
Puzzle rating: 1493
Best move: Bxd4