I can�t seem to find much info on rules at casinos for Dealer-Player ties involving BJ and 21(non-BJ) or on the resulting house edge with these rules. In Blackjack Attack by Schlesinger, Table 4.1 shows that BJ and 21(non BJ) tie frequencies are 0.22% and 0.52%. What�s not clear is impact of tie rules on house edge. For example, what is the impact on house edge with no peek on dealer 10 up when considering double downs and splits ( > 0.22%/2?). It would seem to be greater than 0.11%. Similarly, if dealer wins tied 21 ( non BJ), is the edge 0.52% or greater due to splits and doubles? It seems I�ve seen some of these rules in play at Indian casinos in SoCal. Any insight is greatly appreciated.