I agree that the rule of HAVING to use both dice when possible, is a very basic rule and it needs to be implemented here. I have already run into this situation 3 times on my part, and made the legal move. I dont ALWAYS watch my opponents' moves so I can't really say for sure how many times it has come up on that end. IYT DOES make sure this rule is followed. New games are great, but having the ones we have be correct is more important, in my opinion.