Packle

Each day presents a shape alongside a single reference circle for scale. The task is to estimate exactly how many circles of that size can be packed inside without overlapping. Five tries are allowed, and each wrong number receives a temperature rating from Ice Cold to Boiling depending on how far it is from the answer.

Category

Estimation, Math

How you play

Estimate a number

Languages

Any (no reading needed)

Daily puzzle

Yes

• 7.2
  Fermi

  Estimate answers to three Fermi problems
  Play
• 6.9
  Guess The Angle

  Estimate a drawn angle in degrees
  Play
• 6.8
  Angle

  Guess an angle's size in degrees
  Play
• 6.8
  Centroid

  Click the center of mass of a shape group
  Play
• 6.6
  Angled

  Rebuild a briefly shown angle from memory
  Play
• 6.5
  Counted

  Estimate how many objects flashed on screen
  Play
• 5.9
  Angledle

  Find an angle between 1 and 359 degrees
  Play
• 5.8
  What's the Area?

  Find the point that splits a shape evenly
  Play