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by Andrew Stuart
WARNING: This is the Weekly 'Unsolvable' Sudoku, rated above 'Extreme'.
This is currently unsolvable by my solver, except perhaps with trial and error strategies.
Using the solver will not help you. (much).

Changes March 2026

Due to the introduction of Forcing Nets many Weekly Unsolvable puzzles can now be solved. I have flagged all the Sudoku ones which are solvable. I am struggling to make any new ones so we'll have to see if the Weekly can continue. The point of the Weekly was to provoke discussion and new ideas, so that is progress. But my solution is unlikely to be optimal so alternatives are welcome.

Archive

Each week a new 'unsolvable' will be published and the previous will be accessible here from this archive section. If you like very tough puzzles, these are for you.
Share and Enjoy
Supporter Members have access to all these puzzles going back to number 1.

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Sunday 20-Nov-2016

... by: duderute

789134562
641529378
253867419

Saturday 12-Dec-2015

... by: Yusuf

essalam alykommon fre8re sid ahmed j'ai de9ja lu ce vous avez e9crie allah ma3ak et nous somme les e9lement de aibeinelda derrie8re vous pour toujourston fre8re Samir

Wednesday 12-Aug-2015

... by: itxklb

tmdhybb
Page created on 03-May-2011, last modified on 30-May-2024.
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