I had another "aha!" about this subject that I thought I would share here in case someone finds this thread in the future who has a similar question. DS started playing chess when he was 5, and was almost immediately good at it, winning many tournaments easily when he was 6. At that point, chess was largely about spatial relationships -- a strength for dyslexics. At his current level, chess involves more procedural memory -- memorizing complex openings, and tactics and such. This is a weakness for dyslexics.
So actually, his inconsistent chess performance makes a lot of sense when considered from this angle.
I am really hopeful that we can help him "overlearn" the chess strategies he needs so that he can continue to enjoy playing and competing -- and learn some valuable life lessons into the bargain. Thanks again.
