Chess puzzle (Advantage)
Opening: Scotch_Game, Scotch_Game_Classical_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 bxc6 6. Nc3 Bb7 7. Qe2 Ne7
8. Be3 Bb6 9. O-O-O a5 10. Qd3 a4 11. f3 O-O *
Position (FEN): r2q1rk1/1bppnppp/1bp5/8/p3P3/2NQBP2/PPP3PP/2KR1B1R w - - 1 12
White to move.
Themes:  Opening  
Puzzle rating: 1535
Best move: Bxb6