Logic
Summen
Daily puzzle
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The number logic puzzle: remove, keep, hit the target sums.
Try it right here
Tap away the numbers that don't belong — until every row and column shows exactly its target.
A fresh puzzle every day, the same for everyone — same numbers, same chances. Play as a guest or compete against your friends in arenas with an account. No ads, free.
How it works
- Remove numbers until the remaining ones add up to exactly the target sum in every row and column.
- Mark safe numbers as “keep” — once the sum hits the target, the rest clears automatically.
- Colored areas have their own target sums and give you extra clues.
- You have 3 hearts — every mistake costs one. No hearts left means the attempt is over.
How it feels
Remove
Numbers that don't belong get tapped away.
Keep
Mark numbers you're sure of — they count toward the sum.
Click into place
When a line hits its target, the rest clears itself.
Sizes: 5×5 · 6×6 · 7×7 · 8×8