Chess puzzle (Advantage)
Opening: Italian_Game, Italian_Game_Giuoco_Pianissimo
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. Nc3 a6 6. Bg5 h6 7. Bh4 g5 8. Bg3
d6 9. h3 Nh5 10. Bh2 Nf4 11. Bxf4 exf4 12. Qd2 Ne5 13. Nxe5 dxe5 14. O-O-O Be6
15. Bxe6 fxe6 16. Rhg1 Qd4 17. Rdf1 O-O-O 18. Ne2 Qa4 19. a3 Bb4 *
Position (FEN): 2kr3r/1pp5/p3p2p/4p1p1/qb2Pp2/P2P3P/1PPQNPP1/2K2RR1 w - - 1 20
White to move.
Themes:  Middlegame  
Puzzle rating: 1130
Best move: Qxb4