Chess puzzle (Advantage)
Opening: Scotch_Game, Scotch_Game_Other_variations
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nxd4 5. Qxd4 d6 6. Bc4 Nf6 7. Nc3 Be7 8.
O-O O-O 9. Be3 Be6 10. Nd5 c5 11. Qd3 a6 12. f4 b5 13. Nxe7+ Qxe7 14. Bd5 c4
15. Qe2 Bxd5 16. exd5 Nxd5 17. Rf3 f5 18. Re1 Rae8 19. Qf2 Nb4 *
Position (FEN): 4rrk1/4q1pp/p2p4/1p3p2/1np2P2/4BR2/PPP2QPP/4R1K1 w - - 4 20
White to move.
Themes:  Middlegame  
Puzzle rating: 1635
Best move: Bd2