Chess puzzle (Advantage)
Opening: Scotch_Game, Scotch_Game_Scotch_Gambit
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 d6 5. Ng5 Ne5 6. Qxd4 Nxc4 7. Qxc4 Qd7 8.
O-O Nf6 9. Nc3 c6 10. Bf4 h6 11. e5 *
Position (FEN): r1b1kb1r/pp1q1pp1/2pp1n1p/4P1N1/2Q2B2/2N5/PPP2PPP/R4RK1 b kq - 0 11
Black to move.
Themes:  Middlegame  
Puzzle rating: 1955
Best move: hxg5