[Genius if you can solve it?] Insight and intuition: a challenging IQ quiz
That instant when an idea pops into your head feels so good, doesn’t it? Why not try some IQ quizzes that train your intuition and creativity and enjoy that refreshing rush? Discovering the “Aha!” moment when you see the answer is part of the fun, too.
From wordplay and number tricks to puzzles that use the characteristics of kanji, a small shift in perspective can reveal the solution.
Take a short break in your day and enjoy IQ quizzes as a way to refresh your brain.
- Genius if you can solve it? Super-difficult Quiz Collection
- A collection of challenging quizzes for adults [Difficult]
- Also great for brain training! A flash of intuition is the key to solving these insight quizzes.
- [Trick Quiz] Quiz Questions That Excite Everyone from Kids to Adults
- How old are you? A collection of problems to determine your IQ
- [Daily Challenge] A Collection of Cipher Quiz Problems to Stimulate the Adult Brain
- [Your Hidden Abilities] A Psychological Test to Measure Your Genius Level
- A quiz that seems easy but is actually hard: trick questions that make you think flexibly
- [Challenging and Fun!] Quizzes & Riddles for Adults
- [Logic Quiz] Flexible Thinking and Creativity Are Key! From Classics to Tough Challenges, All in One Go
- Hard to get right on the first try! A quiz you’re guaranteed to get tripped up by.
- [Personality Test] Are You a Smart Person? A Thorough Diagnosis of Your Abilities and Talents!
- Do you get tripped up too? A fun roundup of 10-time quiz questions
Simple yet profound logical thinking & trick-style IQ quizzes (1–10)
You’re running a race at a sports day. The person in front of you is in 4th place, and you overtake them. What place are you in now?
See the answer
4th place
You might think that since you passed the 4th-place person, you're now in 3rd... but at the moment you're actually in 4th. It's an answer you can figure out if you think calmly, but it's a trick question that makes many people blurt out “3rd!” on the spot.
The strong wind blew the door open. I tried to close it, but it wouldn’t shut… why?
See the answer
The door ended up opening (it opened and then closed).
Read literally, it makes you wonder why it opened, doesn’t it? The answer was that since the door was already closed, you can’t close it even if you try.
Person A went shopping with 1,000 yen. They bought a 100-yen tomato, a 200-yen daikon radish, and a 150-yen cucumber, but they didn’t receive any change. Why is that?
See the answer
Because I paid the exact amount.
It says they took 1,000 yen, but it doesn’t specify whether it was a 1,000-yen bill or a 500-yen coin. They brought 1,000 yen in small change and paid the exact amount, so there was no change.
There was someone who turned a single sheet of paper into 10 sheets without cutting or tearing it. How did they make it into 10?
See the answer
I exchanged money.
Making it into 10 without cutting it… that was a big hint, wasn’t it? The answer is exchanging money, and the “one sheet of paper” was a 10,000-yen bill. If you exchange a 10,000-yen bill entirely for 1,000-yen bills, you’ll get 10 of them!
In the English alphabet, the letter A is the first letter, and it also comes before B. What is the last letter of the alphabet?
See the answer
T
You’d think the last letter of the alphabet is Z, right? But if we mean the last letter of the word “ALPHABET,” then the last letter is T.
An elderly person carrying large luggage got on the train, but no one gave up their seat. Why do you think that is?
See the answer
Because there was no one on that train.
Hearing that no one gave up their seat makes you think, “What terrible people!” But there was actually no one on board, so there was no one to give a seat to—and you could sit anywhere you liked.
Why is the 22nd of every month considered ‘Shortcake Day’?
See the answer
On the calendar, the 22nd is above the 15th, because it's strawberries.
Karen, please take a look at the calendar you’re using. The 15th should always be above the 22nd. In fact, there are even cake shops that hold discount events on the 22nd.



