Chess puzzle (Advantage)
Opening: Philidor_Defense, Philidor_Defense_Exchange_Variation
Moves: 1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Be7 5. Bc4 Nf6 6. Qf3 O-O 7. Bg5 c5 8.
Ne2 Bg4 9. Qe3 Be6 10. Bxe6 fxe6 11. Nbc3 Ng4 12. Qd2 *
Position (FEN): rn1q1rk1/pp2b1pp/3pp3/2p3B1/4P1n1/2N5/PPPQNPPP/R3K2R b KQ - 3 12
Black to move.
Themes:  Middlegame  
Puzzle rating: 1061
Best move: Bxg5