Comments on: Why are most sudoku and crossword puzzles constructed with 180 degree rotational symmetry? http://easydaily.com/blog/why-are-most-sudoku-and-crossword-puzzles-constructed-with-180-degree-rotational-symmetry/ EasyDaily.com Thu, 09 Feb 2012 00:42:31 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: xwdguy http://easydaily.com/blog/why-are-most-sudoku-and-crossword-puzzles-constructed-with-180-degree-rotational-symmetry/comment-page-1/#comment-220 xwdguy Tue, 23 Jun 2009 04:44:09 +0000 http://easydaily.com/blog/why-are-most-sudoku-and-crossword-puzzles-constructed-with-180-degree-rotational-symmetry/#comment-220 For crossword puzzles, it is a requested standard for publication, like having no 2-letter entries and not having the black squares chop the puzzle into pieces (so the answer is: quality standard). I have seen some Spanish-language crosswords (crucigramas) that use mirror symmetry instead. I was tempted to do a book of asymmetrical crosswords when I had a chance just to say that I had. I don't have an answer for sudokus. Functionally, it really doesn't matter during construction. But it would look funny. For crossword puzzles, it is a requested standard for publication, like having no 2-letter entries and not having the black squares chop the puzzle into pieces (so the answer is: quality standard). I have seen some Spanish-language crosswords (crucigramas) that use mirror symmetry instead. I was tempted to do a book of asymmetrical crosswords when I had a chance just to say that I had.

I don’t have an answer for sudokus.

Functionally, it really doesn’t matter during construction. But it would look funny.

]]> By: bill http://easydaily.com/blog/why-are-most-sudoku-and-crossword-puzzles-constructed-with-180-degree-rotational-symmetry/comment-page-1/#comment-219 bill Sun, 21 Jun 2009 04:31:42 +0000 http://easydaily.com/blog/why-are-most-sudoku-and-crossword-puzzles-constructed-with-180-degree-rotational-symmetry/#comment-219 so they can get them on the stores faster so they can get them on the stores faster

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