Wallfacer
(Published on 16. March 2026, 17:15 by M.K.)
Rules:
- Normal sudoku rules apply.
- The grid is partially covered with fog. Correctly placed digits will clear the fog around that cell. No guessing is required.
- Digits separated by a white dot are consecutive. Digits separated by a black dot are in a 1:2 ratio. Not all dots are given.
- Draw a 1-cell-wide "wall" that divides the grid such that the white dots are separated from the black dots. The wall cannot loop, branch or touch itself (even diagonally).
- Dots can touch the wall, but they can't be on top of it.
- Digits that share an edge with the wall must be at least 4 lower than their orthogonal neighbors on the wall.
- Adjacent digits on the wall must be consecutive.
Link: SudokuPad
Solution code: Row 1 + Column 1
Comments
on 13. May 2026, 11:30 by M.K.
The rules now state that the wall cannot loop.
on 7. April 2026, 15:14 by abinchen
Wallfacer, I am your Wallbreaker. -Liu Cixin
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Wallbreaker is already in the works. (M.K.)
on 7. April 2026, 11:49 by M.K.
Watch Mark solve this puzzle on CTC:
https://www.youtube.com/watch?v=DY9HqMf94LQ
on 31. March 2026, 00:26 by FullHouse07
Fun and easy puzzle, thank you
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Thanks for solving! (M.K.)
on 18. March 2026, 08:56 by sparkymanu
Really fun and original, thank you for submitting :)
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Thank you for leaving a nice comment. (M.K.)
on 17. March 2026, 15:41 by Exigus
Cool idea and some nice deductions on the way
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Thanks for solving! (M.K.)
on 16. March 2026, 18:26 by mathhead
Lovely puzzle. I really enjoyed it. An unusual yet simple ruleset that has some lovely implications once you understand them.
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Thanks. I really enjoyed setting it. (M.K.)
