1 definition by "Donald Trump's Hair" Fetish

Originating from the youtube account Numberphile, Doing a parker square means that you have attempt to do something but didn't quite achieve accomplishing it.
Matt: Hey Brady, I solved this sodoku puzzle !
Brady: You repeat numbers in all the columns and rows.
Matt: It still sort of counts.
Brady: Face it Matt, this is a parker square sudoku.
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