Let there be chaos
(Published on 3. March 2026, 16:01 by rosiebye)
Divide the grid into regions of orthogonally connected cells. Place the digits 1-9 once each in every row, column, and region.
A digit in a circle indicates exactly how many circles contain that digit. A digit in a circle also indicates how many of the up-to nine surrounding cells (including itself) are in the same region as that circle.
Digits in cells separated by a white dot are consecutive. Digits in cells separated by an X sum to ten. Not all dots and X's are necessarily given.
SudokuPad
Solution code: Column 2 from top to bottom
Comments
on 8. March 2026, 00:47 by abadx
Nice flow, fair difficulty and nice region distribution. Thanks for setting.
on 6. March 2026, 03:52 by waffles_the_dog
I really enjoyed this, thanks for setting it :D
on 3. March 2026, 20:21 by dzamie
That took quite some doing! I'm glad that there was a somewhat simple-ish digit to fill out all 9 of early on, so I could get to coloring the regions. Wound up doing some light bifurcation to finalize the last 3 cells of r9c1's region, but I suspect I missed something or didn't recognize a pattern to avoid that.
