SPOTTING YOUR OWN WEAKNESSES
You can use that same technique for spotting your own weaknesses in
the openings. What you discover might surprise you; the first time I did
this with my own games, it sure shocked me.
Do a database search for your games with the White pieces and merge
them into a tree. Do the same for your games as Black. Open each tree
and look at the numbers (it's one of the few times that you can actually
take a tree's statistics at face value); look for openings in which you score
very poorly. You should go back and study some basic ideas in those
openings, and maybe a couple of main variations to reinforce those ideas.
The you should reload the program's comprehensive opening tree and
step through your games using those “bad” openings; in games where
you deviated in the opening, the moves in large tree will show you what
you should have played.
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