Sigma Grindset
(Published on 24. January 2025, 05:52 by Sniglett)
Normal sudoku rules apply. Place the digits 1-9 into each row/column/box without repeat.
Note that some lines overlap, and the overlapping segments are striped both teal and peach.
Entropic Lines - Every three consecutive cells along a peach entropic line must contain a digit from low [123], mid [456], and high [789].
Modular Lines - Every three consecutive cells along a teal entropic line must contain a digit from a different modulo 3 set [147],[258],[369].
Region Sum Lines - All lines double as region sum lines. Each segment of a line must sum to the same value as each other segment on that line. Segments are separated by region borders. (Blue lines in the alternate version
Solution code: Row 1 followed by Column 1; 18 digits no spaces.
Comments
on 25. January 2025, 17:34 by askaksaksask
Quite fun. There are some great logical steps here, hardly a workaday lines puzzle. I like the alternate version, as the standard has a great aesthetic structure, but it's hard, at least to my eyes, to differentiate the teal and blue (though to be fair, the instructions make it perfectly clear that "everything" bears the RSL constraint). Thank you!
on 24. January 2025, 17:15 by Sniglett
Defined blue lines for alt version
on 24. January 2025, 08:05 by Fra314
Stunning construction and many cool interactions everywhere. Great puzzle!
on 24. January 2025, 06:15 by Tyrgannus
Tested this very colourful grid, was quite the experience
