Chess puzzle (Advantage)
Opening: Ruy_Lopez, Ruy_Lopez_Exchange_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O Bd6 6. d4 Bg4 7. dxe5 Bxf3 8.
Qxf3 Bxe5 9. h3 Qf6 10. Qxf6 Bxf6 11. Bf4 *
Position (FEN): r3k1nr/1pp2ppp/p1p2b2/8/4PB2/7P/PPP2PP1/RN3RK1 b kq - 1 11
Black to move.
Themes:  Middlegame  
Puzzle rating: 1089
Best move: Bxb2