Normal sudoku rules apply: each digit, 1-9, appears exactly once in each row, column, and 3x3 box.
Killer cages: in cages, digits cannot repeat and sum to the number in the top-left corner. Colors are cosmetic to differentiate overlapping cages.
Solution code: Column 7 Top to bottom
on 11. October 2024, 17:52 by Lovejoy
Loved this.... Bravo
on 9. October 2024, 06:55 by St9
Figured out 1 region easily. The others took me longer because I had to avail myself of the secret.
on 8. October 2024, 06:16 by Fisherman
Tantalizing. Even with the insight of Abadx helpful comment, the puzzle is tougher than 2 stars.
on 7. October 2024, 23:47 by abadx
Nice setting. Symmetry helps a lot