Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Delayed_Alapin
Moves: 1. e4 c5 2. Nf3 d6 3. c3 e5 4. d4 cxd4 5. cxd4 exd4 6. Nxd4 Nf6 7. Nc3 g6 8.
Bg5 Bg7 9. f3 Qa5 10. Bb5+ Nbd7 11. Bxd7+ Bxd7 12. O-O *
Position (FEN): r3k2r/pp1b1pbp/3p1np1/q5B1/3NP3/2N2P2/PP4PP/R2Q1RK1 b kq - 1 12
Black to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1258
Best move: Qxg5