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. Bg5 e6 7. Bc4 b5 8. Bb3
Be7 9. O-O O-O 10. f4 Qb6 11. Kh1 Bb7 12. e5 dxe5 13. fxe5 Nc6 14. exf6 Nxd4
15. fxe7 Rfe8 16. Bf6 gxf6 17. Qg4+ Kh8 18. Rxf6 *
Position (FEN): r3r2k/1b2Pp1p/pq2pR2/1p6/3n2Q1/1BN5/PPP3PP/R6K b - - 0 18
Black to move.
Themes:  Middlegame  
Puzzle rating: 1674
Best move: Rg8