An Unknown Bit of Fog Fun
(Published on 8. June 2025, 00:05 by ebiggie)
RULE SET:
Normal Sudoku rules apply. Place the digits 1 through 9 in each row, column, and box.
ENTROPIC (PEACH): Any set of three sequential cells along a peach line must contain a low digit (1,2,3), middle digit (4,5,6) and high digit (7,8,9).
RENBAN (PURPLE): Digits along a purple Renban line must be a set of consecutive non-repeating digits, and may appear in any order.
UNKNOWN (GREY): There is one grey line in the puzzle and it's either a Renban or an Entropic line. It's up to the solver to determine which. There is only one solution.
KROPKI: Cells separated by a black dot are a 1:2 ratio. Cells separated by a white dot are consecutive. Not all dots are given.
DYNAMIC FOG: The grid is partially covered with fog. A correctly placed digit may potentially clear fog somewhere in the grid to reveal more clues. No guessing is required.
For our color blind friends:
Entropic lines are really thick. The line in box 6 is entropic.
Renban lines are a medium thickness.
The Unknown line is very thin.
Click the Link to Play: Sudokupad
Previous Fog Fun puzzles:
Link to: A Bit of Fog Fun
Link to: Another Bit of Fog Fun
Solution code: Please provide the digits from row 9 (left to right):
Comments
on 17. August 2025, 15:53 by TommiH
Wonderful puzzle, it felt very smooth and I really liked the a ha! from the ambiguous line.
on 17. July 2025, 01:12 by aliensfordonuts
Really lovely all the way until the end!
on 20. June 2025, 23:32 by Quizzmo
Really fun! Enjoyed it a lot. Thanks for setting
on 19. June 2025, 15:42 by Zarlino
Excellent puzzle, thank you for setting.
on 10. June 2025, 16:21 by FullDeck-Missing
Lovely bit of head-scratching paired with aha moments! The ambiguous line was good fun :)
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Wow, Thank you for the wonderful comment FullDeck-Missing! Glad you enjoyed the ambiguous line fun :)
on 9. June 2025, 01:18 by abihummel
I love that you always compliment the solvers in the solution message!
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and a big Thank you for your compliment abihummel! :)
on 8. June 2025, 12:27 by SudokuFan
Why did you say that there is only one solution? Didn't need to use uniqueness anywhere
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Hi SudokuFan, After modifying my original setting I decided to leave that in the rule set just to make it as clear as possible. You're absolutely right, there's no need to use uniqueness anywhere.
on 8. June 2025, 10:20 by sujoyku
Thank you for this fun puzzle, ebiggie! It is nicely approachable and interesting all the way to the end. Cool set-up and a very enjoyable finish!
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You're very welcome sujoyku, and Thank you for a very nice comment as always :)
on 8. June 2025, 10:13 by brightonsimon
Absolutely loved this one, great fun from start to finish! Thank you :-)
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You're most welcome brightonsimon, and glad you enjoyed the puzzle! :)
on 8. June 2025, 03:49 by NotSoMagnifique
One of my favorite kinds of puzzles - non-trivial but still solves smooth as butter!
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Thank you for the nice comment NotSoMagnifique :)
