Draw a perfect straight line!
A challenge that tests your hand stability and precision. You must connect two points on the screen with a perfectly straight line. This deceptively difficult challenge requires you to draw without any hand tremor and at a consistent speed to achieve a high score. Can you draw a line so straight it looks computer-generated?
Draw from start to end as straight as possible
Your score is calculated based on line straightness using the R² coefficient (coefficient of determination) converted to a 100-point scale. A perfectly straight line scores 100 points!
💡 Don't draw too fast. The key is to draw slowly at a consistent speed. When using a mouse, anchor your elbow for more stability!
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