Is there any trick to open the locked topic where the user dnt have powers ?
or any trick to get the source of the topic which is locked ?
are you referring to hidden content ? locked topic's content should be already available !
I mean how can I get the source of the topic which is locked
^ do you mean user doesn't have viewing permission to the locked topic ?
^ if there is such trick then that would be a bug in the MyBB permissions system ..