Chess puzzle (Crushing)
Opening: Philidor_Defense, Philidor_Defense_Other_variations
Moves: 1. e4 e5 2. Nf3 d6 3. Bc4 Bg4 4. c3 Nc6 5. Qb3 Qf6 *
Position (FEN): r3kbnr/ppp2ppp/2np1q2/4p3/2B1P1b1/1QP2N2/PP1P1PPP/RNB1K2R w KQkq - 3 6
White to move.
Themes:  Opening  
Puzzle rating: 1643
Best move: Qxb7