Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Open
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. O-O Qc7 8. f4
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Position (FEN): r1b1kb1r/1pqp1ppp/p1n1pn2/8/3NPP2/2N5/PPP1B1PP/R1BQ1RK1 b kq - 0 8
Black to move.
Themes:  Opening  
Puzzle rating: 1452
Best move: Nxd4