My son has recently started playing chess at school, and
we have Lego Chess at home for him to practice with. I was
curious just how strong the Lego Chess program is: it has
a 'difficulty' setting that runs from 0% to 100%, but I was
wondering if anybody knew roughly what its ELO rating
was.

I tried scratching about on Google, but couldn't find
anything there, so if anybody can point me at a
site with the information, or can even just tell me, I'd
be grateful.