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The sofa problem that has puzzled science for 6 decades has been solved
For nearly 60 years, scientists have been unable to find a solution to a seemingly simple problem: Moving a sofa through a narrow L-shaped corner.
Difficult Problem
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Articles about Difficult Problem
30 published items.
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9 problems make brainwaves worldwide brain pain
There are intuitive problems, just apply a common calculation to find the answer, but on the contrary, many problems ask trick questions, making many people unable to th…
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Controversial problems
Let's go find solutions to interesting problems that made many people
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The prize was awarded to the postman on the board, winning 1 million dollars in bonuses
Who wants to be a millionaire, quickly solve the Queen's Puzzle - find a way to put the soldiers on the chessboard because scientists have hung up the prize for up to 1…
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Extremely confused with the riddle
This riddle read seems to be unreasonable but still has a solution. Can you do it?
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The matchstick problem made many people confused
The puzzle problem requires turning two triangles from 6 matches into 4 shapes by moving only two rods but not everyone can find the answer right away.
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Would you be able to solve the problem to your computer?
People are always smarter than computers. If you don't believe it, the problem below will prove to you.
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The problem of horses causing fever in social networks
The problem seems to be simple about the three quantities of horses, horseshoes and shared boots on Facebook still confusing many people.
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60% of Japanese youth solve this very simple problem
The problem is dividing Japanese netizens in recent days. Can you do it?
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The super-difficult problem that existed for decades has been solved, the solution weighs 200TB
Huge capacity just to contain the solution to a problem. Is it really that difficult?
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Can you solve the classic puzzle: Burning time-consuming rope?
Let's enjoy the new day with a puzzle that is both difficult and easy: burn this timeline!
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Are you among the 20%
This problem is relatively harmful to the brain, but it is extremely easy to think of!
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The international press has a headache with Vietnam's super-difficult grade 3 problem
Recently, the famous magazine The Guardian published a math lesson for an 8-year-old Vietnamese student to challenge readers.
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Trying with the problem of 263 years, there is no right answer
Can you overcome obstacles to challenge humanity's most transcendent wisdoms for nearly three centuries?
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Challenge yourself with the most difficult problem in PISA
Asian countries, including Vietnam, far surpass other countries in the PISA exam organized by OECD.