Difficult puzzles, brain teasers and conundrums
Puzzles, riddles, brain teasers, conundrums, logic questions in pictures. All the logic questions here are more difficult than the average in other sections of the site. You will most likely need more time to complete them than usual. But you can look at the answers and explanations for all these logic riddles, brain teasers and conundrums. To check your answer, click on the «Answer» button located below the task. After this, the correct answer and explanations will appear. Below you can select other questions on this topic. Typically each topic has 20 questions or more. At the same time, the complexity of logical problems gradually increases. First there will be easy questions, then medium, then difficult. Try to complete tasks as quickly as possible.
Question - 20
This challenging riddle-conundrum features 9 square cells, each containing 13 squares and 3 circles. The circles change their location according to some rule. Some cells have another very small circle, yellow or blue. You need to understand the logic behind the placement of images within the nine cells. Next, indicate the correct answer to substitute the question mark.
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