The Benoni is not that strong of an opening for Black, compared to some other Indian Systems (e.g. King’s Indian, Queen’s Indian). White players are generally not that afraid of the Benoni. There are some particularly strong lines against the Benoni:
These variations are so fearsome for Black that many grandmasters will avoid them by only playing the “Delayed Benoni”. This means that Black delays the move “..c5” by a move, and only plays it after White has played Nf3, which rules out the f4 lines.
Anti-Indian Options for White
For other ideas about earlier transpositions, see the “Anti-Indian Variations”.