Taking Sudoku Seriously: The Math Behind the World's Most Popular Pencil Puzzle by Jason Rosenhouse & Laura Taalman

Author:Jason Rosenhouse & Laura Taalman [Rosenhouse, Jason & Taalman, Laura]
Language: eng
Format: epub
Tags: General, Mathematics, Logic, Games, History & Philosophy, Sudoku, Recreations & Games
ISBN: 9780199756568
Publisher: Oxford University Press
Published: 2012-01-19T00:00:00+00:00

Which Shidoku squares are fixed under the action of this symmetry? Put that way, the answer obviously is that none of them are fixed. What we really need to know is how many squares are fixed up to permutation of the symbols. Said another way, we need to know how many Shidoku squares have the property that after performing this column-swapping symmetry there is some relabeling of symbols that will return us to the original square. Let’s start by finding just one:

Puzzle 35: Burnside’s Shidoku Column Swap.

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