Brain Teasers

Logic Puzzles Quiz

Eight short deduction puzzles you can reason all the way to one answer. Instant scoring. Free, in your browser, no sign-up.

⚡ Quick answer

Logic Puzzles is a free, 8-question quiz of short deduction puzzles, each with one provable answer and instant scoring. You reason from the stated clues to the solution. It is for fun, not a real IQ test.

Each puzzle here gives you a few facts and one question you can reason all the way to a single answer. No tricks, just clean deduction. Work them out in the box above.

It is free, no sign-up, and every answer follows logically from the clues. It is a playful reasoning workout, not an IQ or medical test.

How it works

Use only the facts given - the answer is always provable.

  • Eight short deduction puzzles.
  • Each follows logically to one answer.
  • Pick it to score and check your reasoning.
  • Get a score out of 8 and a fun title.

Your score stays in your browser.

What it trains

Deduction puzzles build clear, step-by-step reasoning.

  • Combining clues without contradiction.
  • Ruling out impossible options.
  • Following an argument to its end.

It is the same skill behind good decisions and tidy problem solving.

The honest way to read your score

A high score means your reasoning held together today - not that you have a fixed IQ. Beat your own best, then pass it on.

Want more? Try our working memory test or the detective logic quiz.

⚠ When to talk to a professional

This quiz is for fun only. It is not an intelligence or IQ test and does not measure any medical or cognitive trait. Enjoy it as a playful reasoning challenge.

Frequently asked questions

Do I need maths for these?
Mostly no - they are about combining clues with clean logic. A couple use very simple counting you can do in your head.
Is it free?
Yes - free, in your browser, no sign-up, with instant scoring and a shareable result.
Is there always one answer?
Yes - each puzzle here is built so the clues lead to exactly one provable answer.

Give your brain a daily workout

Take a short, non-medical quiz and get a simple daily brain routine.

Try the free memory test