▁any ▁active ▁player ▁hands ▁( dep ends ▁on ▁cas ino ▁rules ) ▁ ▁S urr ender ▁ ▁when ▁deal er ▁has ▁an ▁open ▁A ce ▁is ▁not ▁allowed ▁( dep ends ▁on ▁cas ino ▁rules ) ▁ ▁In sur ance ▁ ▁when ▁deal er ▁has ▁an ▁open ▁A ce ▁is ▁not ▁allowed ▁( dep ends ▁on ▁cas ino ▁rules ) ▁ ▁Power ▁double ▁If ▁the ▁player ' s ▁two - card ▁total ▁is ▁nine , ▁ten ▁or ▁eleven ▁( in ▁some ▁cas inos , ▁only ▁ten ▁and ▁eleven , ▁and ▁in ▁some ▁cas inos ▁soft ▁ 1 9 ▁and ▁ 2 0 ▁are ▁included ) ▁and ▁the ▁player ▁doubles , ▁the ▁player ▁has ▁the ▁option ▁of ▁disc arding ▁the ▁double - down ▁card ▁received ▁and ▁replacing ▁it ▁with ▁top ▁( un seen ) ▁card ▁from ▁the ▁sh oe . ▁The ▁player ▁can ▁not ▁replace ▁the ▁second ▁double ▁card . ▁This ▁option ▁increases ▁the ▁favor ability ▁of ▁dou bling ▁opportun ities . ▁Thus , ▁basic ▁strategy ▁for ▁Power ▁Black jack ▁includes ▁more ▁doubles ▁than ▁for ▁regular ▁black jack . ▁Furthermore , ▁a ▁player ▁needs ▁to ▁learn ▁the ▁additional ▁strategy ▁of ▁when ▁to ▁replace ▁the ▁first ▁double - down ▁card ▁to ▁take ▁maximum ▁advantage ▁of ▁this ▁rule ▁variation . ▁This ▁strategy ▁will ▁depend ▁on ▁the ▁player ' s ▁initial ▁total , ▁the ▁card ▁drawn , ▁and ▁the ▁deal er ' s ▁up ▁card . ▁ ▁Power ▁split ▁If ▁the ▁player ▁is ▁initially ▁de alt ▁a ▁fifteen ▁or ▁six teen ▁( in ▁some ▁cas inos ▁hard