Chess puzzle (Advantage)
Opening: Bishops_Opening, Bishops_Opening_Berlin_Defense
Moves: 1. e4 e5 2. Bc4 Nf6 3. d3 d5 4. exd5 Nxd5 5. Qf3 Be6 6. Nc3 Bb4 7. Ne2 Nc6 8.
Bd2 Bxc3 9. bxc3 Qd7 10. O-O O-O-O 11. a4 Bg4 12. Bxd5 *
Position (FEN): 2kr3r/pppq1ppp/2n5/3Bp3/P5b1/2PP1Q2/2PBNPPP/R4RK1 b - - 0 12
Black to move.
Themes:  Middlegame  
Puzzle rating: 1028
Best move: Bxf3