Drag
Press, cross the whole shape, and release beyond the other edge.
Mouse · trackpad · touchHow to play Cutle
Cutle is a shape area puzzle. Your task is to draw one straight line that leaves equal area on each side. You can start on the daily puzzle without an account or an installation.
1. Draw across
Drag beyond both sides of the shape, then release. A short line inside the shape will not count.
2. Read the split
The result shows both area percentages and a score out of 100. A and B labels remain visible alongside color.
3. Review and retry
Move or rotate a preview line to understand the difference, then try another actual cut. The preview does not count as a new attempt.
Choose the input that fits
Two points
Place start and end separately, then choose Cut this line.
Touch · precise placementMove endpoints
Arrow keys move the selected point; Shift moves farther. Enter cuts and Escape cancels.
No pointer requiredWhich lines count?
Valid crossingCreates two positive filled areas
Too shortEnds inside the shape
Only touchesCorner contact is not a split
MissesNo filled area on one side
Invalid lines do not increase the attempt count. On concave shapes, disconnected pieces on the same side are added together.
What happens after release
1SeparateConfirm two sides
→2MatchBring halves together
→3CheckMeasure filled area
→4ScoreShow ratio and correction
The animation explains the process; the score comes from polygon clipping and area calculation. Reduced-motion settings skip directly to the result.
How to cut a shape in half more accurately
Find the heavy side
Ignore empty corners around the outline. Compare only filled regions and identify which side contains the widest mass.
Check both ends of the line
A line through the apparent center can still leave a large lobe on one side. Follow the whole line and compare the mass above and below it.
Treat tails as light
Long thin extensions influence the outline more than the area. A shorter, wider section can outweigh them.
Use the ratio as direction
If A is 54% and B is 46%, move the next line into A. Keep the angle at first so you can see the effect of one controlled change.
Same geometry, different input
POINTERLine stays visibleGood for fine angle changes
TOUCHFinger covers the endpointTwo-point mode can be easier
SMALL SCREENThin details look compressedCompare practice on the same device
What kind of game is Cutle?
It isFree online visual-area puzzleOne straight cutMeasured 50/50 result
It is notA word guessing gameThe Cuttle card gameA native app download