Chess puzzle (Crushing)
Opening: Queens_Gambit_Accepted, Queens_Gambit_Accepted_Other_variations
Moves: 1. d4 d5 2. c4 dxc4 3. Nc3 Nf6 4. e4 Bg4 5. Nf3 e6 6. Bxc4 Bb4 7. Qa4+ c6 *
Position (FEN): rn1qk2r/pp3ppp/2p1pn2/8/QbBPP1b1/2N2N2/PP3PPP/R1B1K2R w KQkq - 0 8
White to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1235
Best move: Qxb4