Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Mengarini_Variation
Moves: 1. e4 c5 2. a3 d6 3. b4 cxb4 4. axb4 Nf6 5. f3 Qb6 6. c3 Nc6 7. d4 d5 8. e5 Nd7
9. Ne2 e6 10. Na3 Be7 11. Bd2 O-O 12. Nf4 Nd8 13. Bd3 f6 14. exf6 Bxf6 15. Qc2
g6 16. O-O e5 *
Position (FEN): r1bn1rk1/pp1n3p/1q3bp1/3pp3/1P1P1N2/N1PB1P2/2QB2PP/R4RK1 w - - 0 17
White to move.
Themes:  Middlegame  
Puzzle rating: 1511
Best move: Nxd5