Contact Sales Log In Get Started Free
Get Started Free
  1. Home
  2. Riddles

PRIZ Riddles

Put your engineering intuition to work.

Short, sharp challenges designed to make you pause, reason, and see the problem differently.

Try this week’s riddle Browse all riddles
Riddle of the week New

Logic • Easy

Three switches. One trip.
A simple room, three identical switches, and one chance to observe. Can you extract enough information?

Every problem rewards a different way of thinking.

Riddle #01 • Logic 3 min Easy
Three switches. One trip.
A simple room, three identical switches, and one chance to observe. Can you extract enough information?
Solve it

More than a brain teaser.

Practice the habits behind better problem solving.

Each explanation connects the answer to a practical thinking principle you can use on real engineering challenges.

Explore PRIZ methods