Another Detour
(Published on 21. January 2026, 16:00 by Blobz)
Normal sudoku rules apply.
Draw a loop (using orthogonal line segments through the centers of cells) such that it visits every cell marked with a diamond. The loop may cross itself, but can only change direction (turn through 90 degrees) at a diamond. Thus, all "corners" of the loop are on diamonds. However, not all diamonds mark loop corners -- "non-corner" diamonds lay on a line segment _between_ two corners.
The loop has a specific direction, such that each digit in a "corner" diamond equals the number of cells needed to move along the line segment to reach the next corner. Each digit in a "non-corner" diamond must equal the sum of the two corner cells of its line segment.
Have fun, leave a comment if you enjoy the puzzle!
Solution code: Row 8
Comments
on 22. January 2026, 17:25 by Franjo
As building the loop and filling the diamonds was VERY easy this one quickly turned into a classic Sudoku, but, well, not a simple one. Thank you for sharing.
on 22. January 2026, 03:04 by ScatterBrain
This was a great idea. I've never heard of these rules before. Did you make them up? Great puzzle!
