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. Bc4 e5 7. Nf3 Qc7 8. O-O
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Position (FEN): rnb1kb1r/1pq2ppp/p2p1n2/4p3/2B1P3/2N2N2/PPP2PPP/R1BQ1RK1 b kq - 3 8
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 922
Best move: Qxc4