Quote Originally Posted by Akyron View Post
AD&D 1979 Gygax version. He tends to ramble but I can appreciate the clarifications.

You are correct and 2e appears remiss in neglecting that aspect of game balance where there is a chance of success and failure at the extreme ends of the die.

Thank you
FWIW this rule is implemented in Baldurs Gate etc.

I remember using it when I was playing 2e and I had no contact with rules pre 2e. So I either have taken it from Baldurs Gate or it does appear in my (german) printing of the AD&D 2e rules.