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. f3 e6 7. Bc4 Nbd7 8. O-O
Nc5 9. Be3 b5 10. Bd3 Be7 11. Nc6 Qc7 12. Nxe7 Qxe7 13. Bxc5 dxc5 14. a3 c4 15.
e5 cxd3 16. exf6 Qxf6 17. Qxd3 O-O 18. Rad1 Qe7 19. Rfe1 Bd7 *
Position (FEN): r4rk1/3bqppp/p3p3/1p6/8/P1NQ1P2/1PP3PP/3RR1K1 w - - 5 20
White to move.
Themes:  Middlegame  
Puzzle rating: 1001
Best move: Qxd7