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difficult problems

  • Can you solve the classic puzzle: Burning time-consuming rope?

    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!
  • A lot of people made a mistake in the addition

    A lot of people made a mistake in the addition
    Do you give yourself intelligence and eyeballs? You think yourself
  • 6 delicious food puzzles that everyone can

    6 delicious food puzzles that everyone can
    Music with bad song or song, so is the puzzle - it is difficult to make sentences. But there are puzzles that at first glance are certainly very easy, but when you look more
  • This is the riddle that makes most people wrong today! How about you?

    This is the riddle that makes most people wrong today!  How about you?
    Perhaps most of you have already solved many times. Difficult, easy, but in general, puzzle is the most gentle way to train your mind so everyone wants to play, not going
  • If you solve this puzzle, you are even better than an architect

    If you solve this puzzle, you are even better than an architect
    The imaginative puzzles of space geometry do not seem to be strong for many people, including architects.
  • 2 childish puzzles take 10 minutes, adults need an hour to answer

    2 childish puzzles take 10 minutes, adults need an hour to answer
    Puzzle is one of the effective ways to help you train your brain. Sometimes, we tend to complicate matters, making many questions really difficult to solve.
  • 2 puzzles prove your mind is faster than 80% of the population

    2 puzzles prove your mind is faster than 80% of the population
    Not only is the way of thinking, puzzle is also a way to show the world how fast and breakthrough your ability to think.
  • Only those with logical reasoning can break this hard case

    Only those with logical reasoning can break this hard case
    Thrilling cases, detective stories follow criminals ... which always attract a large amount of attention of many young people.
  • This puzzle makes Japanese physics professor surrender! How about you?

    This puzzle makes Japanese physics professor surrender!  How about you?
    There are easy quizzes, there are also super difficult puzzle screens. And indeed in this area, Japanese people are really famous.
  • Poached eggs puzzle only 20% of smart people solve! what about you?

    Poached eggs puzzle only 20% of smart people solve!  what about you?
    Puzzle helps to train the brain - this is probably already known. And today, we will come up with a pretty puzzle
Latest update
  • Why have there never been any bird droppings on the roofs of the Forbidden City in the past 600 years? Why have there never been any bird droppings on the roofs of the Forbidden City in the past 600 years?
  • After being continuously heated for 270 days at over 1,000 degrees Celsius, the GRX-810 material remained unharmed: What is the secret? After being continuously heated for 270 days at over 1,000 degrees Celsius, the GRX-810 material remained unharmed: What is the secret?
  • The loneliest robot in the universe - 'real-life WALL-E': 15 years wandering in endless space. The loneliest robot in the universe - 'real-life WALL-E': 15 years wandering in endless space.
  • Debunking Space Myths: Questions Surrounding Nebulae! Debunking Space Myths: Questions Surrounding Nebulae!
  • 14 of the most powerful armies in ancient world history. 14 of the most powerful armies in ancient world history.
  • 12 of the most terrifying venomous spiders to humans. 12 of the most terrifying venomous spiders to humans.
  • 10 harmful effects of eating dog meat that not everyone knows about. 10 harmful effects of eating dog meat that not everyone knows about.
  • Who should and shouldn't get the Pfizer vaccine? Who should and shouldn't get the Pfizer vaccine?
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