Normal Sudoku rules apply: Place each of the digits 1-9 once in every row, column and indicated 3x3 box.
Arrows: The digit in a large circle is equal to the sum of the digits along the arrow connected to it.
Quadruples: Digits in a medium circle each appear at least once in the 4 cells it touches.
Kropki: Digits separated by a small circle are consecutive.
SudokuPadSolution code: Digits in row 8 from left to right
on 16. February 2026, 20:28 by jez9999
Wouldn't say it's as easy as the existing comments do. Completed it in the end though.
on 16. February 2026, 07:42 by Ganbatte
I agree with @superkinkel. Thanks for a fun puzzle.
on 13. February 2026, 10:21 by superkinkel
Great, still approachable puzzle that manages to save a lot of deductions around variants for the final phase! (I don‘t like the variants that give you some initial digits and then leave you with a ton of Sudoku.
on 13. February 2026, 05:57 by SanFranSam
Is the puzzle title some computer code for a colour? White maybe?
on 13. February 2026, 01:02 by sujoyku
What a flow! Thank you for this wonderful puzzle, thenonymous!
on 12. February 2026, 21:42 by thenonymous
Changed the sudokupad link so it has solution checking
on 12. February 2026, 21:31 by JVA
No solution checking :(
on 12. February 2026, 19:17 by PinkNickels
Really clean, elegant puzzle...and very approachable. 5* quality rating for sure!
on 12. February 2026, 18:35 by Myfyr MJ
Very nice fun puzzle.
on 12. February 2026, 17:20 by HeyItsErin
Really fun puzzle!
on 12. February 2026, 17:12 by Fizz
Very neat puzzle, thanks!