Rules
Normal sudoku rules apply.
The grid is covered in fog. Placing a correct digit will clear the fog from that cell and potentially from other cells somewhere in the grid. No guessing is required.
Along green lines, adjacent digits differ by at least 5.
Along pink lines, digits form a consecutive sequence in any order.
Along red lines, digits must alternate between odd and even.
Along orange lines, adjacent digits differ by at least 4.
Black dots join cells whose digits are in a 1:2 ratio. Not all dots are given.
Solution code: Column 6
on 24. December 2025, 08:13 by grrz
Merry Christmas everyone!
on 19. December 2025, 11:42 by Fra314
Merry Christmas!
on 15. December 2025, 13:08 by Snookerfan
Merry Christmas to you too, Nico, and thanks for the puzzle!
on 12. December 2025, 08:11 by Ganbatte
A fun puzzle, thank you! This was a challenge for me and I can only do 1-star puzzles.
on 10. December 2025, 19:12 by sujoyku
Thank you for this fun puzzle, NicoD! Merry Christmas to you as well!
on 10. December 2025, 17:44 by hardline35
Excellent fog puzzle. Thank you!
| Difficulty: | ![]() |
| Rating: | 94 % |
| Solved: | 219 times |
| Observed: | 1 times |
| ID: | 000QHL |
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