test cases imply that the question title should be "spot the square"
I added a rectangular (non-square) test case. Thanks for the note.
This is a good answer. I changed the test suite so that you wouldn't have to deal with logical input matrices. Sorry about that!
This code is referenced in the following blog post: http://blogs.mathworks.com/community/2015/01/19/robot-game-playing-in-matlab-part-2/
Count from 0 to N^M in base N.
Back to basics 10 - Max Float
02 - Vector Variables 5
Placing Beads Neatly in a Box
Determine the Result of a Move in Reversi
Is It a Snake?
Find an inscribed square on a closed curve
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