Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Najdorf_Variation
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f3 Be7 8. Bc4
Qc7 9. Qd3 Nc6 10. O-O-O *
Position (FEN): r1b1k2r/1pq1bppp/p1nppn2/6B1/2BNP3/2NQ1P2/PPP3PP/2KR3R b kq - 6 10
Black to move.
Themes:  Middlegame  
Puzzle rating: 1955
Best move: Ne5