Read the clues first
A clue never counts itself. Only adjacent hidden cells contribute to the shown total.
How to Play
How to play
SumSweeper looks calm on the surface, but every board is a small system of overlapping sums that only resolves cleanly when you compare multiple clue regions at once.
Use 1, 2, and 4 deliberately
The same sum can come from different combinations, so compare multiple clue regions before you commit.
Campaign first, daily for pressure
Clear the 40-board campaign in standard mode, then use the daily challenge for one shared harder board with three mistakes and zero hints.
Controls
Fill
Choose 1, 2, or 4, then tap a hidden cell.
Notes
Use note mode to toggle candidates without committing to a final value.
Hint
Hints reveal one correct hidden value and keep the campaign moving.