Brain Fog
(Published on 28. February 2024, 11:07 by Scojo)
- Normal sudoku rules apply: Place the digits 1-9 once each in every row, column, and 3x3 box.
- Fog of War: Most of the grid is obscured by fog. Placing a correct digit will remove the fog surrounding that cell.
- Cipher: Each letter from A-J uniquely represents one of the digits 0-9. A two letter clue represents a two digit number which does not begin with 0.
- X-Sum: A clue outside the grid represents the sum of the digits in the first X cells seen from that clue, where X is the first cell seen.
- Killer: Digits in a cage do not repeat and sum to the total, which is given in the leftmost cell of the highest row of the cage.
Solve here if you would like a cipher key outside the grid that you can notate (Recommended). Only the cells inside the sudoku grid need to be filled to trigger answer check; anything outside can be filled or not without issue.
Solve here if you just want the sudoku grid without the cipher key.
Solution code: The letters associated with every digit of row J, from left to right.
Comments
on 26. August 2024, 21:09 by talldrinkofwater
Loved it! Such great interactions between the rules - definitely recommend using the cipher key, though I still managed to mix up digits and x-sums often.
My challenging solve aside, it’s a beautiful puzzle with so much great logic. Thanks for setting Socjo!
on 13. April 2024, 20:44 by Joanie
Beautiful! Incredible that someone was able to construct this. Brilliant brilliant brilliant
on 29. February 2024, 20:16 by Big Tiger
Boy, I couldn't even get the first digit ... I'll hope for a lesson from Simon soon.
on 29. February 2024, 19:22 by LehanLehan
Really nice cipher puzzle,thank you very much.
on 29. February 2024, 15:17 by SudokuFan
Downvoted because of complicated solution code
on 29. February 2024, 14:12 by cornflakes23
Great puzzle, very unique. Even the solution code is a riddle :)
on 29. February 2024, 11:01 by Lion Crow
That was fun. Thnx.
on 29. February 2024, 11:00 by Lion Crow
That was fun. Thnx.
on 28. February 2024, 22:59 by patinthehat48
awesome puzzle, great take on fog of war
on 28. February 2024, 22:31 by wuc
Loved it. Great logic. I love fog puzzles. Thx.
on 28. February 2024, 16:20 by zrbakhtiar
i don't know if it is intended. but i get a clue from solution code description
on 28. February 2024, 15:56 by yttrio
Really fun puzzle! Not too difficult, but still some very interesting logic needed, especially near the start of the puzzle.
on 28. February 2024, 15:21 by halakani
Entering the solution code was harder than the puzzle itself
on 28. February 2024, 15:17 by mathpesto
A lot of fun. Very cool ruleset and less tricky than it might seem at first glance!
on 28. February 2024, 12:31 by WvdWest
Very nice puzzle. I struggled to understand the solution code instructions, but in the end I understood what I was supposed to be doing.
on 28. February 2024, 12:25 by Fizz
A really awesome and fun puzzle, thanks!
on 28. February 2024, 11:47 by efnenu
A very fun puzzle that makes every deduction come with a tiny brainfoggy delay!
