Skewed Boxes with a smile
(Published on 12. February 2026, 14:32 by Puzzle-Elch)
This puzzle is inspired by Aad van de Wetrings Skewed Boxes
Rules:
- Place the digits 1 to 9, once each in every row, column and region. The grid represents the surface of a Toroid. Cells with the same colour belong to the same region.
- Cells separated by a single knight's move cannot contain the same digit.
- Digits along a green line have a difference of at least 5.
- Digits along an arrow sum to the digit in the circle.
- A black dot between cells indicate a 1:2 ratio between the cells.
Have Fun!
Solution code: Row 5
Comments
today, 01:10 by itsid
INdeed a nice puzzle, but the toroid thing makes for a very easy solve (usually you get "a niceness reduction" in points for coloured boxes...)
I too would like an uncoloured version, or say would have liked, since I knew the trick and it was essentially a fill in excercise and as that [and because I think the low rating is NOT deserved...] 5* rating!
It IS a beautiful puzzle.
I'd say 2* difficulty for people who haven't solved a toroid yet (because the pattern emerges rather quikly anyways)
on 20. February 2026, 13:03 by wacfwaef
Its a nice puzzle, though It would help more to have no colors in the solve
>> In SudokuPad you can go to Settings>Visual>Hide Colours
on 18. February 2026, 20:59 by Puzzle-Elch
Tippfehler korrigiert
on 18. February 2026, 20:59 by Puzzle-Elch
Tippfehler korrigiert
on 13. February 2026, 12:53 by VitP
i just do not understand the ratings.
1) this definitely deserves a 90%+.
is everyone here a flat earther, and cannot handle 3-dimensional surfaces?
2) non-experts can definitely solve this, with effort, so it qualifies as level 2.
the important thing to recognize is that there is EXACTLY ONE PATTERN, and that means, for EACH digit, exactly one pattern. therefore, you can pick ONE digit, and track it through the entire grid, and then step through each digit, and there is never any ambiguity.
strongly recommend to "turn colours off" when solving.
on 13. February 2026, 02:22 by HeyItsErin
Amazing puzzle! Hit several snags but it was totally worth pushing through each time.
on 12. February 2026, 22:31 by Onkel_Dagobert
Das war super schwer, aber die Logik dahinter ist einfach brilliant.
