Challenge the sixth level of difficulty: copy puzzle

Topology puzzles from childhood

3.5K Views

Cool operation! Learn this trick and teach you how to open any lock

2.2K Views

How to combine two fragments into an axially symmetrical figure?

21 Views

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

21.1K Views

Wooden track ball, tested successfully

14.2K Views

Do you still believe your eyes?

39 Views

The Impossible Twelve Copper Pillars

4.6K Views

Cardboard track ball, rotating elevator successfully tested

12.4K Views

How did ancient door locks work?

12 Views

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

160 Views

Topology in life (4)

3.0K Views

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

160.8K Views

1s–1h Squid-Frying Challenge

57 Views

The Adventure of Rolling Balls in Life

24 Views

unexpected results

1.3K Views

Water or oil

25 Views

Challenge! Random Food!!?

122 Views

Do you think these six nails can be placed on at the same time?

35 Views

How do you think it can be taken out?

3.6K Views

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

670 Views