robots and mazes: 3 sensors?

Question

i am making this robot for school that has 3 sensors to detect a line, one in the middle for the line that he is currently following and 2 to detect junctions. We made this path of lines sort of a maze and the assignment is to find an algoritm that solves the maze. One group has it easy and has colored junctions, our group needs to find a way to do it with 3 line sensors, anny ideas annyone?

Answer 1

At a junction, always turn left consistently or right consistently. If a dead-end, turn 180°