Puzzcade
Sum Sudoku
No clues to start: every cage tells you its total
How to play
Fill the grid so no digit repeats in a row, column or box.
- Each dashed cage shows the total of its own cells.
- A digit never repeats inside a cage either.
- Hold a number to write it as a pencil note.
- A wrong digit costs a heart, and the right one is filled in.
Tips
- Start with the smallest cages: a two-cell cage has few options.
- A cage of three summing to 6 can only be 1, 2 and 3.
- Add up a whole row of cages: the total has to match the row.