What is it?
Brain Teasers is our hardest riddle set, made for older teenagers and adults. It has more than 30 puzzles on probability, logic, clocks, sequences, anagrams and picture-word (rebus) riddles, each with a hint and an explanation of the answer.
Who is it for?
Adults who find ordinary riddles too easy, students who enjoy maths and logic, interview and aptitude test practice, and quiz nights.
How to use it
- Read the riddle in the big box. The line above it shows its number, how many riddles there are and how many you have solved (β means this one is solved).
- Type your answer in the box and press Check (or Enter). A right answer shows Correct! π, the answer and a short explanation.
- Stuck? π‘ Hint gives a clue; π Answer shows the answer and why it is right.
- Move on with Next βΆ, go back with β, or jump anywhere with π Random. Choose Not solved at the top to skip the riddles you have already cracked.
- Send the riddle (without the answer) to a friend with Share on WhatsApp or Copy. Open See all riddles with answers for the full list.
How to approach them
- When the answer feels obvious, check again: many teasers are built to catch the first guess.
- For probability puzzles, list the cases one by one instead of guessing.
- Rebus example: STAND written above I means I understand.
- Read the explanation even when you are right: it often shows a faster way.
- Use Not solved to come back to the hard ones later.
Errors and how to fix them
- βYour answerβ¦β shown in red: you pressed Check with an empty box. Type a guess first.
- βNot quite. Try again, or take a hint.β: your answer did not match. Capital letters, βaβ and βtheβ, plurals, spaces and punctuation are already ignored, and common other wordings are accepted, so try another word for the same thing, or press π Answer to compare.
- A number answer was rejected: type only the final number (units are optional). A percentage like 50% or a fraction may be written as shown in the riddle; if unsure, press π Answer.
- βYou have solved them all! πβ: with Not solved chosen there is nothing left. Switch back to All to play them again.
- My ticks and solved count are gone: progress is saved only in this browser on this device. A private (incognito) window, clearing site data, or another phone or browser starts from zero.
Open the tool: Brain Teasers
Still stuck?
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Questions, or an error not listed here?
Tell us in the comments: what you were doing, the exact message you saw, and your device and browser. We read every comment and add new fixes to this article.