Otherwise standard Sudoku rules apply.
Solution code: row 1 col 2
on 9. May 2024, 04:48 by Shuhua Milk
Nice
on 14. December 2022, 14:02 by marcmees
amazing how this makes really cool shapes, even with a negative constraint. thanks.
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Thanks for the kind comment. The cool shapes don't come easy (I believe there is exactly one possible grid with this shape, so technically I could have given no other clues). -- ATK
on 14. December 2022, 13:19 by chain.reader
Nice puzzle!
I love/hate this new ruleset. My brain hasn't fully grasped it yet and I keep tripping up :D
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I know, the first time I stumbled upon this rule set and made the first prototype I found myself double-thinking every other move, like I'd never seen a Sudoku before. It was fun! Glad you're enjoying them. -- ATK