Editing 74: Su Doku
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==Explanation== | ==Explanation== | ||
− | {{w | + | {{incomplete}} |
+ | {{w|Su Doku}} (Japanese for "Single number", and now usually written as "Sudoku") is a type of number puzzle, in which the player must place digits in a matrix field in the correct order. | ||
− | + | [[Randall Munroe|Randall]] presents just a {{w|binary}} Su Doku puzzle. A normal Su Doku is "decimal" like our normal counting system (ten digits) counting from zero to nine. | |
− | The title text appears to reference a series of published | + | The joke is that binary system has only two digits (0 and 1), and therefore binary Su Doku puzzles would be infinitely easy and thus pointless. The puzzle in the comic would be completed by filling 0 in the top-left and 1 in the bottom-left empty box. The only other possible grid would have the 0s and 1s swapped. This fulfills the criteria of having no repeated digits in any row or column, although digits would repeat in the 4x4 grid. So a 4x4 binary Su Doku can not be solved. |
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+ | The title text appears to reference a series of published Su Doku puzzle books called the "Martial Arts Sudoku". The difficulty of each book is denoted by a belt color, with each color representing a certain skill level. This colored belts were adopted from the sport {{w|Judo}}. | ||
==Transcript== | ==Transcript== | ||
− | :[A square divided into | + | :[A square divided into 2x2 squares, the top-right one has an 1 in it, the bottom-right one has a 0, the two left ones are empty.] |
:Binary Su Doku | :Binary Su Doku | ||
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+ | ==Trivia== | ||
+ | Some Su Doku puzzles use the {{w|hexidecimal}} system with 16 digits (0-9 and A-F) and a 16x16 grid for more difficulty. | ||
{{comic discussion}} | {{comic discussion}} | ||
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