Are you... at a loss?
(Published on 12. February 2026, 13:43 by gincal)
THE RULES
• Normal 4X4 Sudoku rules apply: The grid must be filled with the numbers 1-4, such that every digit appears exactly once in every row, column, and box.
• Cells touched by Vertical Lines are Column Indexers:
In that cell, let its digit be x and its column be y; in the cell's row, in column x sits digit y. Not every Column Indexer is necessarily given.
Example: The given digit 1 is in R1C2. Imagine it is a Column Indexer. In the same row, the digit in column 1 would be the digit that represents the column in which the initial 1 was placed. If the given 1 is a Column Indexer, R1C1 is the digit 2.
• Cells touched by nearly Horizontal Lines are Row Indexers: In that cell, let its digit be x and its row be y; in the cell's column, in row x sits digit y. Not every Row Indexer is necessarily given.
Solution code: Last Row.
Comments
on 16. February 2026, 12:03 by gincal
Edit: clarified ruleset.
