Chess puzzle (Advantage)
Opening: Scotch_Game, Scotch_Game_Classical_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Bxd4 6. Bxd4 Nf6 7. Nc3 O-O
8. Be2 d6 9. O-O a6 10. Bf3 Be6 11. a3 h6 12. Qd2 Bg4 *
Position (FEN): r2q1rk1/1pp2pp1/p1np1n1p/8/3BP1b1/P1N2B2/1PPQ1PPP/R4RK1 w - - 2 13
White to move.
Themes:  Middlegame  
Puzzle rating: 1390
Best move: Bxf6