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Old 2021-07-21, 21:12   #15
Viliam Furik
 
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"Viliam Furík"
Jul 2018
Martin, Slovakia

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Quote:
Originally Posted by Till View Post
Thanks, my 77-year old, sudoku-addicted mother will love it
You can google some n=4 grids for her, that's an even bigger challenge. I attached one such grid.
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