Open in the curiosity app
A Card-Flipping Psychology Logic Puzzle

A Card-Flipping Psychology Logic Puzzle

The card-flipping numbers and colors logic puzzle is deceptively easy. Here are the rules to the Psych2Go brain teaser: There are four cards laid out in front of you. One shows 11, one shows 8, one shows blue, and the last one shows red. For each card, one side has a number and the other side is colored. If a card has an even number on one side, the other side must be red—but one card breaks this rule. Which card or cards are necessary to turn over to find the card that breaks the rule? Watch the video below for the answer, or scroll down to read the answer. Good luck!

Can You Solve This Psychology Riddle?

Which cards do you flip?

Share the knowledge!


In order to know which card breaks the rule, you would need to flip over both the blue card and the card displaying an 8. Find out how to arrive at this answer by watching the video above.

The Three Switches Puzzle

Imagine you're in a real-life scenario as you solve this one.

Guardian Science and Tech
Share the knowledge!

Can You Solve The Alphabet Math Riddle?

This one gets a little more difficult.


A more curious you.

Join millions of lifelong learners