Oil, Water, Mirror
(Published on 18. May 2026, 16:00 by Blobz)
Oil and Water Puzzle Pack
III : Oil, Water, Mirror
Normal sudoku rules apply.
Each cage is either full of "oil" (even digits), full of "water" (odd digits), or a mix of both. In all cases, each "row" within a cage is of just one type (oil or water). Oil floats on water, so even digits will always be in rows above odd digits in mixed cages.
Digits in cages do not repeat.
Digits along thermometers must increase from the bulb end.
Digits along the marked diagonal do not repeat. Additionally, the diagonal line is a "parity mirror": every pair of cells reflected across this line share the same parity (even or odd).
Have fun, leave a comment if you enjoy the puzzle!
Solution code: Row 1
Comments
on 17. June 2026, 17:18 by ThymePass
This was also a lot of fun! Thank you Blobz!
on 17. June 2026, 07:56 by voidsea
Extremely well-designed puzzle.
It's really hard at the beginning. But fair easy when you figured out the key cells.
on 15. June 2026, 22:57 by CarnacTheMagnificent
Another great puzzle. At first, I messed up the "parity mirror" rule (Example: thought r2c3 matched r8c7 based on location). Then, I saw your example in another comment. Thanks for the puzzle.
on 27. May 2026, 08:43 by Reina
Wait, is the party mirror line like "first and last cell on the line is same parity, second and second to last same parity etc." OR is the whole sudoku grid parity mirrored where the line is axis of symmetry?
Sorry English is not my first language.
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Whole grid. r1c1 is same parity as r9c9, r6c2 same as r8c4
~Blobz
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Thank you for clarification and a very fun coloring puzzle. Solved!
on 18. May 2026, 20:42 by iEtsh
Liked that!
