Value set
Logic puzzle
SumSweeper
What happens when every clue only tells you the total nearby?
Each clue is a nearby sum. Fill hidden cells with 1, 2, or 4 and clear the board through logic.
Campaign
40 readable boards
Daily
1 shared pressure run
Readable clue language
Every clue cell only reports the total of adjacent hidden cells, so the board stays compact even when the deduction chain gets deep.
Small value set, real ambiguity
Using only 1, 2, and 4 keeps the arithmetic clean while still creating overlapping possibilities that have to be cross-checked.
Two good ways in
The campaign teaches the puzzle steadily. The daily challenge strips the help away and turns the same rules into a sharper race.
Checking whether this board is available for this run.
Why It Stays Fair
The puzzle stays compact, but the reasoning keeps opening up
SumSweeper is built so the arithmetic is never the hard part. The pressure comes from overlap: a clue informs several cells, and every safe placement sharpens the next region.
Who It Is For
A logic game for players who like clean signals
- Players who like deduction more than guessing.
- People who want a browser puzzle they can learn in minutes but still improve at over time.
- Anyone who wants a calm campaign and a stricter daily run in the same ruleset.
Best Next Step
Use the page that matches what you need right now
How the clue sums work
Read the core rule set, early solving rhythm, and the mistakes that usually stall first clears.
See the full campaign arc
Browse the four chapters, understand the difficulty curve, and jump back into the next useful board.
Try the shared daily board
One puzzle for everyone today: three mistakes, zero hints, and a fixed reset at midnight Shanghai time.
Why SumSweeper exists
See who the puzzle is for, how the boards are shaped, and what the project is trying to preserve.