Brekekekex Ko-ax Ko-ax
(Published on 2. June 2026, 19:12 by EdTheAlchemist)
- Normal Sudoku rules apply.
- Dionysus and Charon are in the boat and must row to the pier on the other side of the misty River Styx. The boat's path moves orthogonally and may not enter the same cell twice. Two cells directly connected by the path must differ by at least 5.
- The frogs are irritating them with their noisy croaking! Frog cells are noisy cells, and some - but not all - cells next to a frog are also noisy. Each frog counts how many of the (up to 8) surrounding cells, NOT including itself, are noisy. The boat's path may only travel through cells which are not noisy, but it need not visit all such cells.
- Reeds clog the waterway. The boat's path may not enter any cell with a reed.
- Placing correct digits will clear fog in that cell and may clear fog in other cells. No guessing is required.
Solution code: Bottom row
Comments
on 5. June 2026, 23:30 by monroth
OK. So, when I open this in Sven's Sudokupad, it shows what is on the screens that I uploaded. If i open sudokupad in browser on phone or on PC1, it shows frogs on r2 and c2 after revealing first digit. If I open it on PC2, then it shows ALL frogs on the entire field from the very beginning. Something is very buggy here
on 5. June 2026, 22:49 by monroth
I've put my answer here to avoid accidental spoilers
https://pastebin.com/FrK4RfgW
tl dr yes, i use sudokupad
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Now I'm even more puzzled because that is NOT what it's supposed to reveal! It works okay for me, including closing and re-opening SudokuPad!
I'm on PC though and I see from the screenshot that you're on a phone. So I tested it on my (Android) phone too and was also successful, including closing and re-opening SudokuPad in browser there (if there's an app for it, I don't have it, because I don't use my phone much!)
I'm sorry; I don't have any explanation and it works as intended everywhere I'm able to test it!
on 5. June 2026, 18:40 by monroth
I'm a bit puzzled at how to proceed after this state https://ibb.co/9m8nfR6M (blue and red are proven cells on the Charon path, green are proven noisy cells). After a couple of attempts I don't see a way to proceed further than that, only some conditions
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This is curious because in your picture you have a digit that should have revealed some more clues! I tested it myself in SudokuPad and it does reveal the clues; the other solvers have also obviously made it work! Are you using something other than regular SudokuPad?
on 3. June 2026, 19:29 by Mondo
Made it through the croaking chorus and arrived safely on the shore the other side!
Nothing annoying about these frogs - this puzzle was a lot of fun!
on 3. June 2026, 12:00 by Sherif
I think i miss something, as per solution check R8C6 is 2, but because of R7C5 5, i think it must be more than 2
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Alchemist says: I don't want to drop really obvious spoilers here, but there is a way to do it! The cell I suspect you haven't considered is r6c6 - does that help?
on 2. June 2026, 21:03 by EdTheAlchemist
Fixed link! Sorry about that
on 2. June 2026, 20:15 by SKORP17
passender Link, wenn auf das Bild geklickt wird
on 2. June 2026, 20:09 by bansalsaab
Wrong link
