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PRIZ riddle #04 Medium About 4 minutes

Make it lighter, not weaker: a long engineering contradiction in one sentence

The part must lose weight without losing strength, and every obvious cut seems to trade one for the other. How do you resolve the contradiction instead of compromising?

The challenge

A bracket must become lighter without becoming weaker.

Your task

Resolve the contradiction instead of splitting the difference.

Assume the material and envelope cannot change in this first pass.

Before you look

What’s your answer?

Writing down a hypothesis makes the reveal more satisfying—and your reasoning easier to compare.

Your guess stays private. No account required.

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Answer revealed

Remove material where it does not carry load.

  1. Separate the useful function from the mass.
  2. Keep load paths.
  3. Cut everything else.

Why this works

Weight and strength are not the same property everywhere.

Separate the conflict in space or time.

How did you do?

Your response helps us tune difficulty.

Keep thinking

Ready for another challenge?

Try “Three switches. One trip.” next.

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