Nautigal, that's very true. And he doesn't have tantrums about other games or anything in life- just chess. I know he plays at school during lunch, perhaps one of the teachers have said something.

I did also wonder if it's because he doesn't think my husband should be able to beat him; I think my son thinks he smarter than my husband. I rarely win (LOL) against my son, so it's okay because mostly lose.