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 - 15

This is a difficult logic puzzle-conundrum. Here are ten hexagons with lines inside them. You must understand the logic behind the arrangement of lines in hexagons and choose the appropriate answer.

Answer

Correct answer = 5.

Here in each hexagon there are 6 positions of possible lines. Take any two adjacent hexagons. If both hexagons have lines in the same places or there are no lines, then this line will be absent in the higher hexagon. If in one hexagon there is a line at some place, and in another hexagon at the same place there is no line, then in the higher hexagon there will be a line at this place.

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