Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Kan_Variation
Moves: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 d6 6. Bd3 Qc7 7. O-O Nf6 8. Kh1
Be7 9. f4 Qb6 10. a4 Bd7 11. Nb3 Nc6 12. a5 Qc7 13. f5 b5 14. Be3 Qb7 15. fxe6
fxe6 16. Nd4 e5 17. Nxc6 Bxc6 18. Nd5 Bxd5 19. exd5 Qxd5 *
Position (FEN): r3k2r/4b1pp/p2p1n2/Pp1qp3/8/3BB3/1PP3PP/R2Q1R1K w kq - 0 20
White to move.
Themes:  Middlegame  
Puzzle rating: 1826
Best move: Rxf6