Chess puzzle (Crushing)
Opening: Benoni_Defense, Benoni_Defense_Old_Benoni
Moves: 1. d4 c5 2. d5 d6 3. c4 g6 4. Nc3 Bg7 5. e4 Nd7 6. Nf3 Ngf6 7. Bd3 O-O 8. O-O
a6 9. a4 b6 10. h3 Rb8 11. Bf4 Qc7 12. Qd2 Ne5 13. Nxe5 dxe5 14. Bh6 Bd7 15.
Bxg7 Kxg7 16. f4 Ne8 17. f5 Nd6 18. Qg5 f6 19. Qf4 *
Position (FEN): 1r3r2/2qbp1kp/pp1n1pp1/2pPpP2/P1P1PQ2/2NB3P/1P4P1/R4RK1 b - - 1 19
Black to move.
Themes:  Middlegame  
Puzzle rating: 996
Best move: exf4