You are standing in a Heptagonal room (has seven sides). Each side of the heptagon has a closed door, totaling four white doors and three black doors. In front of each door is a guard. Four of the guards will always tell the truth, and the other three will always lie.
No two black doors are adjacent to each other.
You know that there are two liars standing in front of two white doors.
You are allowed to ask three yes-or-no questions to three, two, or only one of them (as you like).
The treasure is behind one of these seven doors.
What are you going to ask to find the treasure?
You are not allowed to ask more than one guard at a time.