World's Hardest IQ Test Challenge

Rules Important


1. Each person should only attempt the test once to ensure the accuracy.


2. The time limit of the test is 3 hours and 30 minutes.


3. There are in total 47 questions (38 well-designed questions and 9 auto-generated questions) which are divided into 4 levels of difficulties.


4. The first 4 and the last 5 questions are randomly generated questions which will be changed every 6 hours.


5. You cannot answer the question within 10 seconds.


6. Please make sure you are in concentration.


7. You are advised to do the test by a laptop / desktop (i.e. computer) rather than a mobile device / tablet.


8. This IQ test can only examine IQ score range from 79 to 169.


9. Any IQ score result lower than 79 will be shown as 79- while higher than 169 will be shown as 169+.


10. This is a challenging test, some questions are difficult. Please choose the answer you think the most likely.


11. Do NOT worry about the result. Normally, you can still score an average IQ level even if you only answer a few questions correctly.


12. Some questions only have a 'better' answer, just choose the one you think most likely. You may still have some scores even if your answer is NOT the 'best' one. The system will analyze your ability accordingly.


13. This online test is originally designed for a person who is aged 14 or above.


14. Before you start the test, you should read the 'About IQTC' section.


About the Test and Statistics