Catalogues

Seven cards. One hidden rule.

Catalogues puzzle 54

Solve Catalogues puzzle 54, a fixed hard list: seven cards, one hidden ordering rule, five guesses.

PUZZLE 54 · Hard

Put these in order

Seven geologic periods

5 guesses left– of 7 in place0:00
  1. Devonian
  2. Silurian
  3. Permian
  4. Quaternary
  5. Cambrian
  6. Cretaceous
  7. Ordovician

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