4 in 1 monster mess
(Eingestellt am 9. September 2025, 15:52 Uhr von Villse)
This sudoku is inspired by Md88keys’ puzzle Monster Muddle. I’ll leave the link to that puzzle below if you want to check it out
This sudoku was quite difficult to construct, so hopefully there are no mistakes on my part — but if you do find any, please let me know :)
I also hope I’ve done a good enough job explaining the rules
Colour the 3×3 regions so that four separate sudokus appear:
One green XV-pair sudoku
One blue black kropki-dot sudoku
One red white kropki-dot sudoku
One yellow quadruple + positive/negative diagonal sudoku
Two regions of the same colour cannot appear next to each other in the 6×6 region grid. Each sudoku variant should be treated as an independent sudoku, and the constraints only apply within that sudoku type.
For clarification: a clue on the border between two regions only applies to the sudoku type with that constraint and only connects to a region of the same colour. The clue does not apply to the entire 6×6 region grid. It’s up to the solver to deduce the correct placement of each region within its sudoku.
Cages indicate orthogonally connected identical digits between different sudoku types. All possible cages are given.
For all four coloured sudokus, normal sudoku rules apply: the digits 1–9 must appear exactly once in every row, column, and region.
Green SudokuXV pairs:
Cells separated by a V sum to 5.
Cells separated by an X sum to 10.
All Vs and Xs are given.
Blue SudokuBlack kropki dots:
Cells separated by a black dot must have a 1:2 ratio.
All possible dots are given.
Red SudokuWhite kropki dots:
Cells separated by a white dot must be consecutive.
All possible dots are given.
Yellow SudokuDiagonals:
Digits along both the positive and the negative diagonal cannot repeat.
Quadruple clues:
Digits shown in a white circle must appear at least once in the four surrounding cells.
Solve online:Sudokupad
Happy solving!
Lösungscode: Box 31 (lower left corner)
Kommentare
am 22. Juli 2026, 21:49 Uhr von Finn
That was beautiful from beginning to end!
It didn't actually feel that hard, more just gigantic xD
I usually can't complete 5-star sudokus, but this one felt very approachable to me (once you adjust your eyes to 36 boxes lol)
After sorting the colours (and arranging the boxes on another screen) the only thing that made me stop was thinking about which sudoku to start with (I went with the green one), after that it kept going and going (and going), the hardest part for me was the yellow one...
But damn, what a wonderful sudoku, and props for coming up with something like that!
am 8. Juli 2026, 01:22 Uhr von sockerbecca
I absolutely loved this one!!!
It was so satisfying, slowly untangling everything, figuring out in which order to do stuff. Always finding new threads to pull at.
I used an image editor in the start to cut the grid apart and rearrange the regions into their respective sudokus for convenience, but once I sorted that and marked their orders (with colour coding), it was surprisingly easy to just solve the whole thing in the sudokupad despite the size! (Easy as in manageable regarding the software.)
The logic and solution path really wasn't that hard, but still challenging enough to be fun and very rewarding. Mostly, the size and complexity is what merits it a 5 or 4 star difficulty rating.
Thank you! (I also solved the Monster Muddle before this, and I enjoyed the two different takes on the deconstruction aspect!)
am 3. April 2026, 19:17 Uhr von Asphodel
After playing around with the whole colors in the knigths serie, I wanted to try some of your other puzzles.
Then, I found this absolute beast.
No real tough logic but a completely epic 4h ride into this mess. It felt like a nasty fog. And I loved it.
Congrats for the puzzle, I can't imagine the head scratches you must've had while setting this monster up...
am 25. Dezember 2025, 23:53 Uhr von TroublesomeOrca
Absolutely outstanding
That negative constraint rule though - would have like to have noticed that hours before!
Excellent work Vilse!
am 19. Dezember 2025, 11:41 Uhr von itsid
sheesh... I tried, and got the colours in very confidently, realized what goes where and why in my head and tried to start the green (for no reason other than me having finished an XV just before this one)
aaaand boy oh boy, I lose track of rows and columns with every heartbeat it seems.
Now I understand why this is a hard puzzle *yikes*
HMKAY.... more coffee, more coffee aaaand a bit more coffee... let's go!
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Okay... uhm I read "clues between regions only apply if both regions share the same colour" as a negative constraint...
BUT Column 7 row 9/10 share a kropki dot and it kinda works, right?
and no.. I'm not done yet... not even close...
(what a beast!)
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done! but yellow was a huge pain to sort the boxes... had to photoshop the boxes and move them around to stare at it. I eventually solved yellow as a classic 9x9 with some pen&paper just to not get more confused.
Nice puzzle, but there shoulöd be a "note-taking-grid" IYAM
am 9. Dezember 2025, 17:54 Uhr von Blake Saligia
Really hard to figure out what the clues on the border mean, but once understand them, it becomes quite easy. I think the most ingenious part is that the clues on borders never overlap.
am 9. September 2025, 18:48 Uhr von Da Letter El
so basically the external clues should be treated like the ridges on a puzzle piece to help figure out where the scrambled bits go?
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Yes, exactly!
