This, the way it works is, when you find either a room with a brazier or a room with a room, stop, find an exit that is 90 degrees to the one you entered from. Then continue strait,counting rooms in that new direction until you have to turn again. Turn another 90 degrees (same as the 1st you chose, so If you turned Left in the brazier/rune room you turn left again.) The Rune and the Braziers make a "perfect" rectangle/square. So if you find the Red rune in a room, turned left walked 6 rooms before you had to turn, then 4 rooms and find the Red Brazier, you then turn left again walk 6 more rooms, turn left then walk 4 rooms... poof Red Rune again.