No-Contact
(Published on 23. April 2026, 19:17 by iEtsh)
Rules:
Fill the grid with digits 1–9 so that no digit repeats in any row, column, or 3×3 box.
Anti-King: Cells a king’s move apart cannot contain the same digit.
Anti-Knight: Cells a knight’s move apart (as in chess) cannot contain the same digit.
Non-Consecutive: Orthogonally adjacent cells (sharing an edge) cannot contain consecutive digits.
Pointing Arrow: Points to a smaller value
Solution code: Last Row
Comments
on 4. May 2026, 19:34 by itsid
@VitP; true it "looks" hard
but as you said it aint..
It's really as simple as it gets, once you get the pairs in, you can "either or" color wise and see that it makes no difference for something else, then... the "looks hard" part will be gone in just a few steps and you can proceed as normal.
That is the most fun part IYAM.
Very beautiful solution btw, (I misread the pointer as a V of course.. so maybe it'd be clearer to use another domino with an upward pointing "arrow head" ;-)
Anyways, loved how that tiny asymmetry crackled the puzzle slowly open.
on 24. April 2026, 14:04 by VitP
this ruleset is so constrained that you need only about 3 givens to make it work. that is a "miracle" sudoku, and it's not very hard.
THIS one, with SO MANY givens, still looks extremely hard. perhaps that is a different kind of miracle.
p.s. even if you start with 6 or 8, there's still a 50/50 symmetry, and the disambiguation is FAR away.
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iEtsh: I'm really glad you enjoyed it, thanks for your comment.
on 24. April 2026, 13:31 by Qodec
Interesting take on a well known idea. Liked that, thanks!
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iEtsh: Thanks!
on 24. April 2026, 12:01 by FullHouse07
The path to the solution was quite strange for me. Nice puzzle
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iEtsh: Hope u enjoyed ur journey ;)
