Chess puzzle (Advantage)
Opening: Philidor_Defense, Philidor_Defense_Other_variations
Moves: 1. e4 e5 2. Nf3 d6 3. Nc3 Bg4 4. Be2 Bxf3 5. Bxf3 c5 6. Nd5 Nf6 7. d3 Nxd5 8.
exd5 Be7 9. c4 Bg5 10. Bxg5 Qxg5 11. Qa4+ Nd7 12. b4 O-O *
Position (FEN): r4rk1/pp1n1ppp/3p4/2pPp1q1/QPP5/3P1B2/P4PPP/R3K2R w KQ - 1 13
White to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 871
Best move: Qxd7