Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Ragozin_Defense
Moves: 1. d4 Nf6 2. c4 d5 3. Nf3 e6 4. Nc3 Bb4 5. Bg5 h6 6. Bh4 b6 *
Position (FEN): rnbqk2r/p1p2pp1/1p2pn1p/3p4/1bPP3B/2N2N2/PP2PPPP/R2QKB1R w KQkq - 0 7
White to move.
Themes:  Middlegame  
Puzzle rating: 1074
Best move: Qa4+