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. a4 Nc6 7. Bc4 e6 8. Be3
Be7 9. O-O O-O 10. f4 Qc7 11. f5 e5 12. Nf3 Nb4 13. Bb3 Bd7 14. Qe1 h6 15. Qg3
Kh7 16. Qh4 Nfd5 17. Qe1 Nxe3 18. Qxe3 d5 19. Nxd5 *
Position (FEN): r4r2/1pqbbppk/p6p/3NpP2/Pn2P3/1B2QN2/1PP3PP/R4RK1 b - - 0 19
Black to move.
Themes:  Middlegame  
Puzzle rating: 1612
Best move: Nxd5