Modular Thermometers
(Published on 14. September 2025, 23:27 by RocknRollLogician)
This is my first attempt at writing a sudoku puzzle. Any constructive feedback would be greatly appreciated.
Normal 9x9 sudoku rules apply. Place the digits 1 - 9 once in every row, column and box.
Turquoise modular thermometers act as both thermometers and mod 3 lines:
Thermometers: digits along a thermometer must strictly increase from the bulb end.
Mod 3 lines: Every 3 consecutive cells along a mod 3 line must contain a complete set of residuals modulo 3. i.e: one from (3,6,9), one from (1,4,7) and one from (2,5,8).
Solution code: Box 5 in normal reading order
Comments
today, 00:07 by VitP
this is a fine puzzle, in the "very easy" category.
it does require a strong focus on BASIC SUDOKU ... the horror.
a little bit of colouring might help.
technical note: a lot of snyder notation is needed, and goodliffing. since about half the grid is covered in BLUE, this causes some difficulty. is it possible to reduce the SATURATION of the blue?
on 16. September 2025, 16:07 by Slumped_5
Great construction for a first puzzle! Enjoyed it!
on 16. September 2025, 14:08 by CitrusGremlin
Very enjoyable constraints! I liked going through and making sure the thermos had enough options to make certain modularity patterns fit.
on 16. September 2025, 10:03 by superkinkel
Very nice puzzle, relatively easy break-in for motivation and then a little more challenging midway. I concur with the view it gears towards a two star difficulty.
on 15. September 2025, 15:37 by Plok
I loved the puzzle. Completely got stuck, with half the numbers filled in. Nice flow.
Difficulty for me leans towards 2 as the combination of constraints might be hard to grasp for a beginner.
Very wwell done for a first setting.
on 15. September 2025, 08:14 by Mozart40
Very smooth solving path. Enjoyed it.
