I announced this one when I posted my first Outside Sudoku puzzle: it’s a non consecutive Outside Sudoku. Even though it looks like a regular Sudoku puzzle, you must follow one extra rule: two touching numbers must not be consecutive.
Outside Non/Consecutive Sudoku for Monday, January 18, 2010 – Difficulty: THINKER.
(click to download or rightclick to save the image)
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sudoku variants and other puzzle books 
To see the solution to this puzzle click here
4 Comments
These Outside Sudokus are great. When will we get more?
DJ,
I love the Outside Sudoku variants.
I solve all the 3 of them in this site and it was very challengeable and enjoyable.
Each of them needs different technics to solve.
Donna, you’ll get some more TODAY (Jan 21)! 🙂
There is another noncons outside on the Sudoku variants page.
nice one! Thank you 😉
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[…] it. I might start including them on the Daily Sudoku page, of course in some variant version (the nonconsecutive outside sudoku type looks particularly […]