Olympiad
(Published on 21. February 2026, 16:00 by Blobz)
Normal sudoku rules apply.
Black dots separate digits where one is double the other. White dots separate consecutive digits. Not all such dots are shown.
Place digits along the circles such that:
- Blue (top left) uses digits from {1234}
- Yellow (bottom left) uses digits from {3456}
- Black (top middle) uses digits from {1256}
- Red (top right) uses digits from {56789}
- Green (bottom right) uses the digits 1 to 9 once each, in addition to the given 4
Have fun, leave a comment if you enjoy the puzzle!
Solution code: Row 2
Comments
on 22. February 2026, 19:44 by CarnacTheMagnificent
Awesome puzzle. Enjoyed the circle rules variant. On a side note: I won't forget that puzzle ID number :-)
on 22. February 2026, 07:10 by KyleBaran
This was a fine puzzle
A cool variant might be "Each ring uses 4 unique digits. These digits must be determined by the solver"
on 21. February 2026, 23:51 by BlueToast001
14:32 for me, very nice puzzle, got a little stumped by the green circle... because I failed to read the rules properly, OOPS.
on 21. February 2026, 20:19 by SanFranSam
Started getting stuck until i reread the clues. Colouring helped as well.
on 21. February 2026, 18:04 by macintux
Definitely a time where I wish SudokuPad allowed us to hide clues. Was hard to spot the digits I needed among the visual clutter, but a fun puzzle.
on 21. February 2026, 17:22 by Ragna
Fun puzzle. Very nice idea. Thank you. :-)
on 21. February 2026, 16:22 by Inge
That was fun
