i think the benoni covers positions where white plays d4 and replies d5 to c5. now black can play c5 on move 1 or later so there's a lot of variance here.
with 1 e4 e6 2 d4 c5 (or similarly 1 e4 c5 2 d4 e6 but a rarer move order) you invite a benoni, but one where white hasn't played c4 yet and he doesn't have to, and also where white hasn't played nf3 yet meaning he can play f4 first at some point.
if you are looking to cover all sensible setups for white here, you have a lot to digest. another concern is the very little room for error you have in the benoni, so it will not be forgiving of learning curves as much as other lines. it might frustrate you to get crushed by just making a few inaccurate moves.
if you still want to learn it, i don't object. just make sure to try and improve other areas of your game that have more overall utility like tactical play and endgame play, so that you can more effectively use what you learn from opening study.
Hello,
I was interested in learning more about the opening e4, e6, d4, c5. I know it can transition into different sicilians, but I was more interested in learning more about its entrance into the franco-benoni.
One part that has been difficult is that the majority of benoni openings that I can find involve having a e4 / d5 pawn structure rather than a the pawn structure that opens from the franco-benoni (mainly c4 / d5).
I was wondering if anyone had advice to find some general lines to help, or advice to differentiate the differences between the benoni openings.
Thank you!