Think. Solve. Physics Olympiad.
Chillu Physics Olympiad. Solve original physics puzzles, follow the clues, and find the “aha!” behind every answer.
Your brain. A pencil. A little curiosity.
Help Chillu connect the dots between forces, circuits and the everyday world. Think it through, lock an answer, then discover why.
Challenge: 10 questions · 3 lives · 3 hints Practice: all 100 questions · unlimited lives and hints
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Illustration · Chillu asks the good questions
Understand every answer
01 / How to play
- Choose Challenge for 10 shuffled questions or Practice for all 100. A new run also shuffles the answer positions.
- Read the assumptions and units. Use paper or a calculator if you like. There is no time limit.
- Tap or click one answer, or press 1–4. The first answer is final. Read the explanation before going on.
- Correct answers score 100 points with a streak bonus of up to 50. A hinted correct answer scores 50, with no bonus and a reset streak.
- In Challenge, each wrong answer costs one life. The run ends after 10 questions or three mistakes. Practice has no life limit. Review all attempted questions at the end.
02 / What’s in the lab?
100 original problems, from free fall and conservation of momentum to parallel circuits and the lens equation. Warm-ups build confidence; challenge questions combine ideas or require more than one step.
Quick facts: Free educational quiz · Single player · Mobile and desktop browsers · Tap, mouse or keyboard · No download or account · Silent and untimed.
Challenge gives you three hints per run. Practice gives one hint per question. Your best challenge score is saved on this browser when local storage is available.
The sketches illustrate concepts; use the values in the question for calculations. This is introductory olympiad-style practice, with worked solutions rather than official contest questions.
03 / Good questions
What is Chillu Physics Olympiad?
An original physics quiz game with 100 introductory olympiad-style problems. It is independent practice, not an official competition or a complete olympiad preparation course.
Is the game free?
Yes. Play in your browser without a download, payment or account.
Can I play on a phone or with a keyboard?
Yes. Tap or click an answer, or press 1–4 while a question is active. All buttons also work with Tab and Enter.
How are points and hints counted?
A correct answer earns 100 points, plus 10 for each preceding consecutive unhinted correct answer, capped at a 50-point bonus. A hinted correct answer earns 50 points and resets the streak. A wrong answer earns no points and resets the streak.
Is there a timer or sound?
No. The game is untimed and silent, so you can stop to work on paper. Restart begins a new shuffled run. Progress in an unfinished run is not saved.
What is saved on my device?
Only your best challenge score is stored locally when browser storage is available. Practice scores do not replace it. Clearing browser data removes that record.