Fog, Deconstructed
(Published on 1. July 2023, 19:59 by jwsinclair)
Fill the grid with nine non-overlapping 3x3 square regions, such that each region contains the digits 1-9 once each and no digit repeats in any row or column.
Correctly entered digits clear the fog around them.
Cells outside regions do not contain digits.
Cages show the sum of their digits in the left-most cell of the highest row reached by the cage, and digits cannot repeat within a cage.
Cells with a shaded square must contain an even digit.
Cells with a shaded circle must contain an odd digit.
Play online
Thanks for solving and rating! If you or someone you know might enjoy a weekly set of puzzles that are pretty approachable by LMD standards (more so than this one, but sometimes not by much), check out Artisanal Sudoku. Primarily killer sudokus, often in combination with other rulesets.
Solution code: row 10, with an 'X' for any empty cells (11 characters)
Comments
on 14. May 2024, 09:14 by wuc
Awesome. One of my first cc. Hard but fair. Thx.
on 21. March 2024, 01:30 by Virux
WOW. just wow!
on 9. October 2023, 22:39 by cascadeshiker
Tough puzzle for me, with a consistent level of difficulty throughout. I really enjoyed it. I would have been lost without Simon's (of CTC fame) general discussion of commonalities in deconstruction puzzles.
on 3. September 2023, 17:30 by damasosos92
Probably one of the best FOW out there.
on 8. July 2023, 00:39 by SimplePurpleFrog
Absolutely stunning, thank you for a great puzzle.
on 4. July 2023, 15:28 by LehanLehan
This is so beautiful, thank you very much.
on 4. July 2023, 11:54 by Jorrr2
Very nice one, solid 3.5 stars for me at least. The only thing I don't like with fog puzzles is that you immediately know when a digit is wrong, which feels a bit like cheating (I had this once or twice in this puzzle).
on 4. July 2023, 10:59 by RubberMittens
I was very impressed with the part of the solution for the bottom right box and how it interacted with a couple other boxes.
on 3. July 2023, 23:11 by thoughtbyte
Fantastic puzzle. Thanks!
on 3. July 2023, 21:39 by Playmaker6174
Quite certainly one of the best FoW puzzles I've ever solved, though 3/5 diff is a real understatement for how consistent the solve is throughout.
I really like how the breakthroughs work in the first 4 rows using the fog, and the puzzle keeps being engaging till the very end :)
on 3. July 2023, 20:06 by dumediat
Very slick logic in this, enjoyable the entire way through. Thank you very much for sharing!
on 3. July 2023, 01:44 by Chefofdeath
Very nice puzzle! I enjoyed this a ton!!
on 2. July 2023, 21:49 by Christounet
Very fun deconstruction and cool logic involving the fog ! Thanks !
on 2. July 2023, 19:08 by jhow25
Just to clarify, each row and column does not necessarily have the digits 1 to 9, correct?
--
Correct. Any given row or column could have 9, 6, 3, or even 0 digits; there just can't be any repeats.
on 2. July 2023, 15:03 by HumanBirdsong
I think this is the hardest 3-star I’ve solved: it took me 46 minutes. Fantastic puzzle, as always, but probably 4-star for me.
--
Thanks, glad you liked it! I had it at 4/5 originally, but obviously it's out of my hands now.
on 2. July 2023, 09:40 by farodin64
Wunderful amazing puzzle, thanks for setting
on 2. July 2023, 06:25 by Lavender Gooms
Absolutely loved it. Incredible.
on 2. July 2023, 00:38 by Starlight
Loved this. It was really hard for me and not sure I did it the right way but I got there in the end. Love how the construction worked with the fog.
on 1. July 2023, 21:53 by jwsinclair
modified a clue because of a dumb oversight on my part
on 1. July 2023, 20:40 by Fool on Hill
This has some nice original deductions with good challenge throughout.
