“COOL” for Monday

I just posted today’s puzzle – rated “cool”. Remember, this is on “easy, cool, thinker, brain, iq, insane” scale. The difficulty is shown in the image along with the numeric indication of the difficulty. So this number can be used…

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Puzzle difficulty rating

As promised, I’ve implemented a difficulty rating system in my Perfect Sudoku software and from now on I will be publishing the level for each puzzle. I’d like to get some response from you on this – how do you…

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