Sissa's Lines
(Published on 30. August 2026, 18:19 by Kjupatrick)
Sissa's Lines by Patrick Junke
Rules:
The standard Sudoku rules apply: place the digits 1–9 exactly once in each row, column, and 3×3 box.
Each line has a beginning and an end, neither of which is indicated.
Each cell on a line has an associated value. Starting from the beginning of a line, each cell's value is twice that of the previous cell.
The digit in each cell on a line is the digital root of its value: repeatedly add its digits together until a single digit from 1 to 9 remains.
For example, a cell with value 32 contains 5 (3 + 2 = 5). The next cell has value 64 and therefore contains 1 (6 + 4 = 10 → 1 + 0 = 1).
On each line, exactly one cell match its value.
Here is a link to a SudokuPad version of the grid.
Solution code: The 9 digits of the last column, from top to bottom
Comments
on 30. August 2026, 21:55 by Kjupatrick
Precizing the last rule
on 30. August 2026, 21:48 by biorycbyd
The last rule is not clear, maybe it should be 'EXACTLY one cell may match its value'.
Otherwise, the values may start from any number, then this rule will be meaningless.
Patrick> Thank you very much for your feedback! I think you're right.
