Chess puzzle (Crushing)
Opening: Italian_Game, Italian_Game_Classical_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 d6 5. O-O Bg4 6. Qb3 Qf6 *
Position (FEN): r3k1nr/ppp2ppp/2np1q2/2b1p3/2B1P1b1/1QP2N2/PP1P1PPP/RNB2RK1 w kq - 4 7
White to move.
Themes:  Opening  
Puzzle rating: 1601
Best move: Qxb7