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/
Twins in a Window
Back to basics 4 - Search Path
Compute a dot product of two vectors x and y
Find the biggest empty box
2048 Next Move
Find the stride of the longest skip sequence
Spot the rectangle (Part 2)
Rotate and display numbered tile
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