Chess puzzle (Advantage)
Opening: Zukertort_Opening, Zukertort_Opening_Wade_Defense
Moves: 1. e4 d6 2. Nf3 Bg4 3. Be2 c6 4. d4 Nd7 5. O-O Ngf6 6. Nc3 g6 7. Bg5 Qa5 8. a3
*
Position (FEN): r3kb1r/pp1npp1p/2pp1np1/q5B1/3PP1b1/P1N2N2/1PP1BPPP/R2Q1RK1 b kq - 0 8
Black to move.
Themes:  Middlegame  
Puzzle rating: 1231
Best move: Bxf3