I find this Jehova Strategy to "play main lines and learn a moderate amount of theory" very easy in a good sence!
I find out that Andoid App Chess Reportoire (
chessrepertoire.com/) says the same ”We have created opening reportoire based on main line as white. All you have to do is to choose 1.e4, 1.d4 or 1.Nf3/1.c4. With black you choose your defence against the same moves and also as black we have choosen main lines”
But I do prefere to choose my lines according to what I like rather than to what some books says regardless of how well a move score in master games or according to oracle Houdini engine or whatever. Ofcourse I would be dump to not look at the sources but in the end I want to build an opening reportoire that is according to my likings and put together both in a logical and intresting ways.
I want to ask people at this forum about the depth to go in each line? Yes, we have no right or wrong answer. It depends on what one want. As I see it one wants to have an opening reportoire with moves that are posible to be played in a lifetime. Sounding dumb, I know. But I have no other way to describe this but let my try again...
I want to cut of each line at the time when going further in these lines would be to go to deeply into this line then one has bigger holes to fill in other opening variations. Im talking about I Quot comparing number of moves (you can see them in Complexity function) between openings. But... its also a reason why some openings gets played more often. So one cant have a fixed Quot.
The tools Im thinking about to use is a big database like Mega Database (from Chessbase). Also I bee afraid of going deeper at the time we have less than 100 moves played in the position. This is also a way to define the cut of point. At the start even less than 1.000 moves in pos. Would be a signal to cut.
Thanks for listening! Looking forward to replay.