Chess puzzle (Advantage)
Opening: Queens_Gambit_Accepted, Queens_Gambit_Accepted_Central_Variation
Moves: 1. d4 d5 2. c4 dxc4 3. e4 Nc6 4. Bxc4 Qxd4 5. Qb3 Na5 *
Position (FEN): r1b1kbnr/ppp1pppp/8/n7/2BqP3/1Q6/PP3PPP/RNB1K1NR w KQkq - 2 6
White to move.
Themes: Attacking f2 or f7 Opening  
Puzzle rating: 1644
Best move: Bxf7+