author: unknown

We are presented with a maze with a green and red square. Solving the maze, we find a unique path:

We can now use the clue in the title, 'turnabout', to encode the path as

lrllrllr lrrrllrr llrlllll lrrlrllr
lrrrlrll llrlllll lrrllrrl lrrllllr
lrrlrllr lrrrllrl llrlllll lrrrllll
lrrlrrll lrrllllr lrrrrllr llrrrrrr

Where l is left and r is right. Replacing l's with 0 and r's with 1, and assuming an ASCII encoding, we obtain the message: Is it fair play?