▁early . ▁Instead , ▁it ▁simply ▁moves ▁the ▁bishop ▁to ▁ 6 8 ▁allowing ▁the ▁king ▁to ▁move ▁into ▁the ▁Fort ress ▁castle ▁in ▁subsequent ▁moves . ▁The ▁position ▁continues ▁with ▁Black ' s ▁N - 3 7 , ▁B - 6 4 , ▁and ▁P - 2 6 . ▁While ▁it ▁is ▁tradition ally ▁said ▁in ▁sh og i ▁that ▁Fort ress ▁is ▁a ▁position ▁in ▁which ▁" Black ▁dec ides ▁the ▁position ▁while ▁White ▁de als ▁with ▁it ," ▁in ▁this ▁strategy ▁this ▁is ▁intention ally ▁revers ed . ▁ ▁It ▁can ▁be ▁said ▁that ▁the ▁way ▁of ▁thinking ▁is ▁that ▁with ▁the ▁P - 2 6 ▁push , ▁the ▁Nak ah ara ▁style ▁B - 6 8 ▁move ▁is ▁handed ▁over . ▁▁ ▁Just ▁like ▁in ▁the ▁Kat ō ▁sub vari ation ▁of ▁the ▁S - 3 7 ▁variation , ▁when ▁the ▁attitude ▁is ▁decided ▁ahead ▁of ▁time , ▁the ▁main ▁point ▁of ▁the ▁Mor ish ita ▁system ▁is ▁for ▁Black ▁to ▁wait ▁to ▁see ▁the ▁oppon ent ' s ▁attitude ▁before ▁dec iding ▁on ▁one . ▁With ▁the ▁right ▁silver ▁on ▁S - 4 8 ▁cast ling ▁the ▁king ▁becomes ▁the ▁priority , ▁and ▁depending ▁on ▁White ' s ▁strategy , ▁typically ▁S - 5 7 ▁and ▁then ▁S 5 7 - 6 8 ▁can ▁be ▁used , ▁or ▁altern atively ▁the ▁kn ight ▁will ▁be ▁jump ed ▁to ▁N - 3 7 ▁( this ▁is ▁also ▁called ▁Knight - 3 7 ▁strategy ) ▁and ▁the ▁ro ok ▁moved