deductidle

DAILY #2 · September 21, 2026

Find the secret rule.

Fits

Doesn't fit

Free play

A QUICK DISCOVERY

Find what fits.

Fits

12 · 18 · 30

Doesn't fit

11 · 17 · 25

Even numbers, or multiples of 3? Test an idea.

Which test tells them apart?

Test ideas and use two hints for free. “I've got it” asks you to sort three examples; a wrong check adds one strike. Finish each stage to unlock the next. Share after all three.

See the answer?

This finishes the stage with one strike.

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