Chess puzzle (Crushing)
Opening: Sicilian_Defense, Sicilian_Defense_Keres_Variation
Moves: 1. e4 c5 2. Ne2 d6 3. Ng3 Nf6 4. Bc4 e6 5. O-O Nc6 6. a3 Be7 7. Ba2 O-O 8. d3
d5 9. f4 Qb6 10. Kh1 Rd8 11. e5 Nd7 12. c3 d4 13. Qe2 f6 14. Nd2 fxe5 15. Bxe6+
Kh8 16. Nc4 Qb3 17. Nf5 Nf6 18. fxe5 Bxe6 19. Nxe7 Nxe7 *
Position (FEN): r2r3k/pp2n1pp/4bn2/2p1P3/2Np4/PqPP4/1P2Q1PP/R1B2R1K w - - 0 20
White to move.
Themes:  Middlegame  
Puzzle rating: 1239
Best move: exf6