Snake Bites in the Fog
(Published on 22. October 2026, 02:48 by catyay)
• Normal 4x4 Sudoku rules apply.
• German Whisper Line: Adjacent digits along a green line must have a difference of at least 2.
• Renban: Digits along a magenta line form a set of consecutive non-repeating digits.
• Even Digits: A grey square indicates an even number.
• Fog: The board is partially covered in fog. Placing a digit correctly will lift the fog around it.
My first puzzle.
I was never able to stay interested in Sudoku for long, but recently Sudoku Variants have gotten me super hooked. I'd like to make something more bigger, interesting, and challenging next time.
Cheers!
Solution code: Last Row
Comments
on 26. October 2026, 15:21 by WvdWest
0:51
on 23. October 2026, 17:45 by catyay
Forgot to state that the grey square indicates an even digit. Apologies everyone!
on 22. October 2026, 19:20 by ppdswiss
The grey square denotes an Even Digit and this needs to be added to the ruleset otherwise there are two possible solutions
Otherwise, well done on your first sudoku!
on 22. October 2026, 18:37 by fishsaltyak
Missing rule
on 22. October 2026, 16:02 by logistician
What does the grey square mean?
on 22. October 2026, 14:36 by NeeBats
Nice ! But I considered R1C1 to be even because of the grey square but it's not listed in the rules... Can you solve it without this clue ?
on 22. October 2026, 13:56 by philolologue
1:45 for me :) very nice
on 22. October 2026, 12:36 by Myfyr MJ
Very nice and extremely easy :)
on 22. October 2026, 07:08 by NicolajN
What is the purpose of the gray square in the top left corner? If it symbolize an even digit it should be in the rules.
on 22. October 2026, 02:52 by catyay
fixed typo
