Solution code: Row 1
on 21. May 2026, 19:30 by CitrusGremlin
I enjoyed this! Was annoying at first to keep track of disjoint sets without the conflict checker keeping track of it for me but I figured out a nice system where I colored in cells in box 1 to represent every cell a 1 had already been placed in, and same for all the rest of the digits down the line. I'd say this is one star but I'm not the best judge.
on 21. May 2026, 15:33 by jeffrey.l.byrd19
I was tempted to put this at a 1 but my time was much slower than it need to be since I forgot the disjoint set rule.
on 21. May 2026, 11:46 by Myfyr MJ
Very nice, 2 stars difficulty. The disjoint subgroups variant is tricky at times though.
on 21. May 2026, 09:55 by BG03
I would say 1.5* for difficulty as many variants get used here (even if not too complex). Thanks
on 21. May 2026, 05:58 by Sudonym
Not sure if 1 or 2 stars for this one. Hard to judge when you have set the puzzle yourself. Guess it depends how smart you are too. :) Hope you enjoy it either way.
| Difficulty: | ![]() |
| Rating: | 88 % |
| Solved: | 144 times |
| Observed: | 0 times |
| ID: | 000SXM |
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