Chess puzzle (Advantage)
Opening: Italian_Game, Italian_Game_Anti-Fried_Liver_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 h6 4. d4 exd4 5. Nxd4 Nxd4 6. Qxd4 d6 7. O-O Nf6 8.
Nc3 g6 9. Nd5 Bg7 10. Nxf6+ Bxf6 11. Qd5 Be6 12. Qd3 Qe7 13. Re1 Bxc4 14. Qxc4
O-O-O 15. Be3 Kb8 16. a4 Bxb2 17. Rab1 Ba3 18. Qa6 c5 19. Rxb7+ *
Position (FEN): 1k1r3r/pR2qp2/Q2p2pp/2p5/P3P3/b3B3/2P2PPP/4R1K1 b - - 0 19
Black to move.
Themes:  Middlegame  
Puzzle rating: 1014
Best move: Qxb7