Oklahoma Indian casino had this game for many years- 6d, h17, das, rsa, early surrender on dealer Ace, late surrender otherwise. Low stakes. decent penetration. usually only one or two tables open. House advantage was something like 0.02%
I played for a few years and I never saw a player taking early surrender correctly. 9 out of 10 players never took early surrender. The few that did were not correct.
Even without checking a reference calculator, this just seems obvious and intuitive. If the dealer has an ace and you have a stiff, you are much better to take half back and call it done.
I guess the fact that so few players were taking advantage of rule is why it lasted so long. Wish I would have taken more advantage when it was available.
According to most recent, CBJN, I don't believe there are any ESR games remaining.


