Seven cards. One hidden rule.

Catalogues puzzle 147

Solve Catalogues puzzle 147, a fixed hard list: seven cards, one hidden ordering rule, five guesses.

PUZZLE 147 · Hard

Put these in order

Seven kinds of light

5 guesses left– of 7 in place0:00
  1. Infrared
  2. Gamma rays
  3. Ultraviolet
  4. Orange light
  5. Radio waves
  6. X-rays
  7. Violet light

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