Missing Circles
(Published on 31. July 2026, 15:17 by rmulinix)
Enjoy!: https://sudokupad.app/doieo0xf14
Rules:
Normal Sudoku rules apply. Place the digits 1–9 exactly once in every row, column, and 3×3 box.MISSING CIRCLES: Find nine missing circles in the grid, one in each row, column, and 3×3 box, each containing a different digit. No cell may contain more than one circle.
CIRCLES: A digit in a circle indicates how many circles contain that digit. This includes the missing circles.
ANTI-KNIGHT: No two cells separated by a chess knight's move (an L-shape of two steps one way and one step perpendicular) can share the same digit.
Author: R. Mullinix
Solution code: First Column Read Top to Bottom
Comments
on 2. August 2026, 12:34 by vorash00
Same as Wuschel, easy if you remember the anti knight rule.
It's a great compliment to you rmulinix that I didn't by pass this puzzle due to the anti knight constraint as I'm not a fan of that restriction but I am a fan of yours so I thought I'll give this a go. Nice puzzle.
~~
:) I didn't know I had any fans. Thanks for giving it a go. -Rick M.
on 1. August 2026, 14:49 by Arheus
This is one of those puzzles that, once it "clicks", solves very smoothly and enjoyably. Congratulations!
~~
Thank you very much. -Rick M.
on 1. August 2026, 11:15 by IAlreadyHaveAKey
Quite a charming puzzle! the circle logic is lovely.
~~
Thank you for your kind words. -RIck M.
on 1. August 2026, 02:03 by ecstasy18
Crisp logic and smooth flow. Thanks!
~~
Thank you! -Rick M.
on 1. August 2026, 00:13 by LeaVulpina
I love puzzles like this that for the first couple of minutes have me wondering how the heck to approach it, and then once the penny drops, it's actually not all that difficult, and smooth as a calm sea.
~~
Very kind, thank you. -Rick M.
on 31. July 2026, 20:30 by rictech
Great puzzle that required some unique logic! Flows smoothly once you figure out the “mainline” constraint. Thanks!
~~
Thank you, I'm glad you enjoyed it. -Rick M.
on 31. July 2026, 16:15 by Wuschel
Very nice and quite easy (if you don't forget about Anti-Knight...) Thank you!
~~
Thank you for your kinds word. -Rick M.
