The grid has 3 diamonds. Cells intersecting each diamond form 3 extra regions each containing all digits 1-9.
The corners of each diamond contain even digits.
Digits in cages sum to the clue in the top left corner
Solution code: Row 9
on 9. June 2023, 06:40 by mnasti2
I enjoyed it, thanks!
on 12. March 2023, 19:50 by Nylimb
Nice puzzle; thanks.