Image:Sudoku Analysis.gif

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Sudoku_Analysis.gif‎ (558 × 64 pixels, file size: 3 KB, MIME type: image/gif)

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[edit] Summary

This image demonstrates partial elimination of a row using Analysis in Sudoku. It is written in superscript notation, with all possible values for the squares as the superscripts. There are three squares in the row which contain a combination of three possible numbers only: 4, 6, or 8. If 4, 6, or 8 were written in any square where they're red, it would be impossible to complete the squares where they're blue. Therefore, the numbers in red can be erased.

Another way of analysis would be to look at the black numbers. The third square from the left contains the numbers 1 and 9. The last square on the right contains the number 1 and 9. No other squares contain the number 1 and 9 therefore, these two squares must contain either 1 or 9 and all other numbers (the red ones) can be removed as candidates.

[edit] Licensing

I, the copyright holder of this work, hereby grant the permission to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.

File history

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	Date/Time	Dimensions	User	Comment
current	19:19, 1 March 2007	558×64 (3 KB)	Sarysa (Talk \| contribs)	(Better version than previous, since 9 could be pinned without using the method described.)
	19:05, 1 March 2007	558×64 (3 KB)	Sarysa (Talk \| contribs)	(This image demonstrates partial elimination of a row using Analysis in Sudoku. It is written in subscript notation, with all possible values for the squares as the subscripts. There are three squares in the row which contain only two (could be three) of t)