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. Be3 e5 7. Nb3 Be6 8. Be2
Be7 9. f4 exf4 10. Bxf4 d5 11. e5 Ne4 12. Qd3 Nxc3 13. Qxc3 Nc6 14. Nc5 Qa5 15.
Qxa5 Nxa5 16. Nxe6 fxe6 17. O-O-O O-O 18. h4 *
Position (FEN): r4rk1/1p2b1pp/p3p3/n2pP3/5B1P/8/PPP1B1P1/2KR3R b - - 0 18
Black to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1003
Best move: Rxf4