Spring Clean
(Published on 11. October 2022, 01:00 by apiyo)
This is my first success at building a fully rotationally symmetrical puzzle. Many thanks to ThoughtByte for the inspiration, encouragement and testing. He rates difficulty at 3.5. I hope you enjoy!
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Normal Sudoku rules apply.
Digits along a blue thermos increase from the circle end. Digits in yellow circles are odd. Neighbouring digits on a green German Whisper line differ by at least 5. Digits on a purple Renban line are consecutive.
Additionally:
- Each thermo's digits sum to 10.
- Every German Whispers line contains exactly one friendly cell. Every whisper uses a different friendly digit.
(A cell is friendly if it contains its own box, column or row number. Eg, the cell at Row 5 Column 7 could contain a 5, 7 or its box number 6.)
Solution code: Row 1 followed by Column 7 (18 digits)
Comments
on 26. October 2022, 18:04 by thoughtbyte
Awesome! One of my favorite uses of friendly cells, thanks apiyo.
on 12. October 2022, 11:02 by SirWoezel
Beautiful puzzle.
on 11. October 2022, 15:22 by mihel111
Very nice ruleset. Beautyfull symetry.
Pencilmarking a bit tricky at the start.
Well done Apiyo
