Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Alapin_Variation
Moves: 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. Na3 a6 5. Bc4 Qd6 6. Nf3 b5 7. Be2 Nf6 8. O-O
Bb7 9. Nc2 g6 10. d4 cxd4 11. Ncxd4 Bg7 12. h3 O-O 13. Qb3 Nbd7 14. Be3 Nc5 15.
Qb4 Qc7 16. Nxb5 axb5 17. Bxc5 *
Position (FEN): r4rk1/1bq1ppbp/5np1/1pB5/1Q6/2P2N1P/PP2BPP1/R4RK1 b - - 0 17
Black to move.
Themes:  Middlegame  
Puzzle rating: 1787
Best move: Nd5