ENHC is the explanation for ES on more than two cards. You can surrender on two or more cards. No surrender after split or double.You actually surrender less than normal on the first two cards due to the option to surrender later. On two cards I don't ES against 5,6 or 7. I can't calculate how much this rule adds to my game and other strategy changes if any?
Thanks, H
Almost too good to be true, in fact. I'd urge you not to publish the name of the casino on an open board. You can get some information on ES from Basic Blackjack by Wong. You can order the book from this site.
Email might be a better route for this conversation.