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
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.
on 12. February 2026, 17:20 by hovestar
I'd probably want to make that the anti-knight rule works on the toroid explicit, other than that it's a fun solve.
