Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Albin_Countergambit
Moves: 1. d4 d5 2. c4 e5 3. Nc3 Bb4 4. cxd5 exd4 5. Qa4+ Bd7 *
Position (FEN): rn1qk1nr/pppb1ppp/8/3P4/Qb1p4/2N5/PP2PPPP/R1B1KBNR w KQkq - 2 6
White to move.
Themes: Hanging Piece Opening  
Puzzle rating: 1223
Best move: Qxb4