Do you still believe your eyes?

Cardboard track ball, rotating elevator successfully tested

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How did ancient door locks work?

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unexpected results

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Topology puzzles from childhood

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Lawn Restoration

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200 wooden track balls and large wave boards in multiple colors were tested successfully

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160.6K Views

The Adventure of Rolling Balls in Life

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Topology in life (4)

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Do you know how to take out the Rubik's Cube from the bottle?

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663 Views

How could a six-piece T-shaped puzzle fit in?

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Wooden track ball, tested successfully

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14.1K Views

Japanese romance variety shows kiss first and then fall in love #five times#

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11.8K Views

How do you think it can be taken out?

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3.6K Views

Mind-Blowing Puzzle M9 Is Incredibly Difficult with Just 9 Pieces.

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Illusion Video

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114 Views

How powerful is a load-bearing bridge built with a few small wooden bars?

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The Impossible Twelve Copper Pillars

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Kazi Brain Test: Who is the most uncomfortable among the three kidnapped?

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Hip Invincibility

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Can you tell at a glance how it's put together?

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157 Views