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I am proud to annonce you my latest book Super Sudoku Challenge 2 16x16
This is a long awaited sequel of the popular Super Sudoku Challenge 1. The lovers of Super Sudoku will be pleased by the 100 new puzzles contain in this book divided into four levels of difficulty. YOu could find this book on amazon : Super Sudoku Challenge 2. And in case you have missed the first one : Super Sudoku Challenge 1, don't worry, it is still available.
I hope you will love it. !!!
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This month, this website has reached its three years of existence. At the beginning I did not know how long it would last. But last month I renewed with my provider for another year, so I guess I will be here for more time than I had expected
In case it could interest you, since the beginning I have published 450 articles in English and French. I have provided you 1021 puzzles !!!.
And I have many more other kind of puzzle to present you I hope to have enough time to show my new stuff. My goal for this 4th year is to publish some new books. I intend to finish my section about the rules of Suguru and …
Cheer and I want to thank you for your interest If you have any comment plesase let me know.
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Just to let you know that I have included the PDF files of the examples showed in Rules of Spark Sudoku. This is more convenient for trying the puzzles.
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Just to let you know that I have added new content to Rules of Suguru. In fact I added new strategies for solving the most difficult Suguru , by the same occasion I have changed the form of this article. This is just the begining, I will add more technics soon. I will eventually offer you these kind of Suguru in Innoludic. I intend to write a book on how to solve the extreme Suguru, if I find the time and the courage to undertake this task.
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GOAL
This technic let you determine the right candidate.
CONDITION
If a cell has n candidates and n neighboring cells pertaining to an another and same region and the neigboring cells have the same candidates than the original cell plus an another candidate. (It is very important that this other candidate appears only once in the neighboring cells).
RESULT
Then this other candidate must be elected in one of the neighboring cell else if this candidate does not appears it would produce an illegal sitation because the original cell will have no valid candidates (in fact the original cell will have 0 candidate).
Example
From the Suguru at the figure 1 with the basic technics we arrive at this situation (fig 2).
To be able to progress you need to apply the election. The original cell B5 has two candidates: 1 and 4 and also two neighboring cells C4 and C6. These two neighboring cells have together the same candidates that the original cell ( 1 and 4) plus an other candidate 5. So based on this rule C4 must have 5.
Why
If the candidate 5 were not present in C4 then C4 would have 4 and C6 1, thus the original cell B5 will have no candidate.
With that you could find the solution (fig 3).
You could try by yourself with this example Suguru election.pdf.
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