Normal sudoku rules apply.
Every horizontal or vertical line of connected digits which sums to 12 is marked with a cage.
No other horizontal or vertical lines of connected digits sum to 12 (including across cage boundaries).
Shaded cells of the same colour contain the same digit.
Solution code: row 3
on 23. February 2022, 12:56 by wilsig
very nice!
on 22. February 2022, 14:49 by Ragna
Again very very nice! :-))
on 22. February 2022, 05:17 by manushand
Great puzzle, @scruffamudda! The way you use colors means that this puzzle could be a killers-only puzzle in my own (mostly arrows, thus far) "Number By Paint" series! Check those out if interested, and thanks again for a wonderful puzzle!