Yes, Polarbear, dysgraphia too. What a good memory! Thanks for all your replies. I think this is feeling right. He is a pretty advanced tournament player with a lot of experience, and he studies tactics every day. He is almost 11, so the little kid inconsistency explanation is starting to sound less convincing. I do think it is the retrieval/automaticity/procedural learning deficit. This is really encouraging to have an explanation and therefore a strategy.
He was at the state championship this past weekend. He won against a player rated 900, then dropped a game against someone rated 200. This is not happening to his teammates, so I figured there had gone something...
Thanks!
