Kaleidoscope (Zipper Lines, Parity Mirrors)
(Published on 24. October 2025, 23:36 by DubiousMobius)
Rules:
Sudoku:Place the digits 1-9 once each in every row, column, and 3x3 box.
Zippers: Along a purple line, any two cells an equal distance along the line from the center cell will add to the digit in the center cell.
Parity Mirrors: The thin light blue lines are both parity mirrors. If a pair of cells reflect to one another across either of those lines, that pair of cells will share their parity (i.e. both will be even or both will be odd).
Click the puzzle to play!
Solution code: Row 3
Comments
on 4. March 2026, 15:46 by abadx
Basic knowledge need to solve this one: 4 even and 5 odds per row.
Most of the work is done by coloring and even sudoku work is quite straightforward (just a X-wing at the end). Solid 2* for me.
on 14. November 2025, 21:16 by galium_odoratum
Very fun, but for me a solid 3-3.5 difficulty (based on that I quite constantly need 10min per star).
on 28. October 2025, 16:38 by MathGuy_12
Really enjoyed the double mirrors! Made such a cool pattern
on 27. October 2025, 22:09 by dzamie
Ooh, multiple mirrors! Fun!
on 26. October 2025, 11:07 by JoeyJoeJoe
02:15:25 for me! thanks for setting.
on 25. October 2025, 14:35 by ymhsbmbesitwf
really cool
on 25. October 2025, 12:45 by damo_89
Zipper and parity mirror is such a good combination
on 25. October 2025, 00:13 by Calvinball
I really enjoyed how the nonstandard placement of the mirrors subverted my expectations. Thanks for the fun puzzle mate!
