Normal Sudoku rules apply. Place the digits 1-9 in each row, column and box without repetition.
Quadruples: Digits in the white circle must appear in at least one of the four surrounding cells.
Anti-Quadruples: Digits in the light red circle cannot appear in one of the four surrounding cells.
Bipolar Quadruples: In the yellow circle of the four digits, two digits cannot appear and the two other digits must appear in any of the four surrounding cells.
Anti-King: Cells that are a King's move apart (in chess) may not contain the same digit.
This is a sequel to Bipolar Quads, and
If you like this puzzle you may enjoy some of my other puzzles too, click HERE to see the other puzzles I have made.
Solution code: Row 1
on 13. July 2026, 21:13 by The Bard
Removed wrong tag
on 13. July 2026, 15:59 by Omnicole
Very enjoyable one!
The tag is wrongly set to anti-knight.
on 8. July 2026, 13:26 by gadgetgreen
Great. Cool idea!
on 6. July 2026, 21:08 by alexlovi
I had such a hard time with this puzzle! Solving it was incredible!
on 6. July 2026, 16:30 by AnebodaSlatorp
Thank you Bard
on 6. July 2026, 09:32 by snuuba
Loved it, again. Great sudoku ruleset invention.
on 5. July 2026, 00:19 by PinkNickels
Very nice puzzle. Managed to finish in under 20 minutes, which is rare for a 3*. Thanks for all you add to the community!
on 4. July 2026, 14:14 by galium_odoratum
Fun puzzle, easy to get lost in pencil marks, but still with a nice flow.
on 4. July 2026, 13:36 by Snookerfan
Very nice and interesting puzzle. For me it was a 5 star puzzle, maybe because I have no previous experience with this ruleset. Thanks!
on 4. July 2026, 09:16 by Morphismic
What is supposed to happen with yellow circles with only two digits? One in one out?
Edit: Yes :)
on 4. July 2026, 03:39 by LeaVulpina
Love this series, and this didn't disappoint!
on 4. July 2026, 01:13 by The Bard
updated code
on 4. July 2026, 00:58 by jordanza
wrong code?
~~
Try it now.
Sorry for it not being right.
The Bard