There's a little more information in this Reddit thread [1]. In it someone references an earlier work by Jason Zimba [2]. [1] https://www.reddit.com/r/math/co

There's a little more information in this Reddit thread [1]. In it someone references an earlier work by Jason Zimba [2]. [1] https://www.reddit.com/r/math/comments/11zptjo/an_impossible_proof_of_pythagoras_by_two_high/ https://www.reddit.com/r/math/comments/11zptjo/an_impossible... [2] https://forumgeom.fau.edu/FG2009volume9/FG200925.pdf https://forumgeom.fau.edu/FG2009volume9/FG200925.pdf