Image:Sudoku Analysis.gif

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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 numbers 1 and 9. No other squares contain the numbers 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.

Licensing

GFDL 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.)
revert 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)

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