Blind Alley: The Game of Mazes (1983)

"This game is somewhat similar to Milton Bradley's Pathfinder; it also has each player create a maze and then try to solve the opponent's maze by moving through it and being told when walls are encountered. However, in Blind Alley the wall pieces come in a variety of shapes, each of which is a different color. When your piece hits a wall you are told what color it is, which may enable you to make deductions about where other walls are based on the shape of the piece. Information-marking walls are provided in the maze wall colors to allow easy tracking. "