Catalogues

Seven cards. One hidden rule.

Catalogues puzzle 180

Solve Catalogues puzzle 180, a fixed hard list: seven cards, one hidden ordering rule, five guesses.

PUZZLE 180 · Hard

Put these in order

Seven hydrocarbons

5 guesses left– of 7 in place0:00
  1. Methane
  2. Pentane
  3. Decane
  4. Heptane
  5. Butane
  6. Nonane
  7. Ethane

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