Colored Circles
(Published on 20. September 2023, 22:42 by Prof.Dori)
Colored Circles
This puzzle does include both versions with colors and without colors, which second option is to make more accessible for colorblind people.
Rules:
Normal sudoku rules apply. The digit in a colored circle indicates exactly how many times that digit appears in a circle of that color. Eg: a 5 in a green circle indicates that there are exactly five 5s in green circles. However, 8 of the circles are naughty; these don’t obey the circle rule. Eg: a 5 in a naughty green circle indicates that there are NOT exactly five 5s in green circles. On every row, column and box contain exactly one naughty circle.
Solution code: Row 3 followed by row 7.
Comments
on 21. December 2023, 20:58 by damasosos92
Very good interactions! Thank you for pointing me out of this puzzle!
on 14. October 2023, 16:29 by yuanbangod
good
on 25. September 2023, 20:56 by yttrio
A great use of the circle counting rule set!
on 22. September 2023, 21:44 by Fool on Hill
What a lovely idea, nicely executed and solved beautifully once I realised what was going on.
on 21. September 2023, 17:53 by marty_sears
Dorlir, this was a pleasure to test for you. Possibly the most inventive use of the circle counting rule I have seen yet.
This is a real work of art; aesthetically clean and beautiful, but also a wealth of logical gems lie buried beneath the surface. Working out several 'rules', things that must be true, are really fun... particularly regarding restrictions on naughtiness. The solve path has a surprising amount of variety too.
It took me a while but it all flowed smoothly, apart from one sneaky step, which had me stuck for a while.
Finishing this off was immensely satisfying... well done, an astonishing bit of work.
