Which country invented the Twelve Pieces

According to legend, the ancestor of the twelve pieces of nerve-wracking pieces is the Chinese domino, twelve pieces of different shapes of the puzzle can spell out thousands of shapes, involving plane geometry, three-dimensional geometry, topology, operations research, graph theory, logic, aesthetics, architecture, physics and other disciplines, and "tangram", "Kong Ming lock", "Huarong Dao", "T word mystery", "nine rings" and so on called classic educational toys. The West calls it the "China Puzzle" or the "Pandominoes." "Pandomino" means five sons connected, because the twelve pieces of the puzzle, although they have different shapes, each piece occupies the same number of squares, all of which are five, hence the name.

In the forties of the twentieth century, the "Nerve-Broken Twelve" was favored by Western mathematicians, who strongly advocated it, and it became popular all over the world. In the early fifties, Fang Buyuan, a middle school Chinese teacher in Shanghai, China, transformed the popular flat "12 nerve-wracking pieces" into three-dimensional, making the "12 pieces" more nerve-wracking and charming. It can spell out characters (such as Beijing, Liupan Mountain, etc.), rectangles, various patterns (such as tigers, dogs, ostriches, goldfish, etc.), as well as cuboids and steps.

Of course, let your imagination run wild and trust you to create more. The "Nerve-wracking Twelve" was almost born under the unanimous research of people at home and abroad. "Brain-wrenching twelve" is the name chosen by the Chinese, which vividly illustrates the structure and function of this toy.

It is also a puzzle toy, with a total of twelve pieces, each of which is made up of five small cubes with different shapes. Not only can it spell out many flat figures, but it can also spell out interesting three-dimensional shapes, and it can even be used as a chess piece to play on a chess board. Foreign countries call this toy "Pandomino", which means dominoes, which also shows that this kind of toy evolved from Chinese dominoes.

"Nerve-wracking twelve" was once praised by cartoonist Feng Zikai as "above the super flat toy, and chess, Go stubborn", can be arbitrary, fickle puzzle puzzle game, not only it can spell out a lot of interesting flat graphics, but also can spell out a lot of beautiful three-dimensional patterns.

Haha, you asked me to ask the right person A friend just recently gave me a set of 12 pieces of nerve-wracking It's very fun, in fact, it can spell out thousands of shapes, involving plane geometry, solid geometry, topology, operations research, graph theory, logic, aesthetics, architecture, physics and other disciplines, and "tangram", "Kong Ming lock", "Huarong Dao", "T word mystery", "nine rings" and so on are known as Chinese classic educational toys.

12 small wooden blocks of the same size, but with their own unique shapes, have infinite mysteries, and sometimes they can be really nerve-wracking.

At the moment, I'm working on it, and I can basically complete it every time (spell it first, and then make adjustments later), but I haven't figured out the math yet.

I hope you can do your research as well.

Hope it helps, thank you.

Played with it as a child. It is a total of twelve blocks of different shapes, and when I bought them, they formed a cuboid. Then according to the drawings, you can put together various shapes, because it is a cube, so it is a bit difficult.

Now there are GBA and flash games, but they are flat.

What do you mean! We don't understand!

The puzzle is a few bucks.

Kong Ming lock, also known as Bagua lock, Luban lock, has been widely spread in the Han folk intellectual toys. It is a fixed combination of traditional civil engineering architecture of the Han nationality in ancient China, and there are also names such as "don't stuffy stick", "six sons of the party", "Mo Naihe", "difficult wood" and so on. Without nails and ropes, it is completely supported by the connection of its own structure, just like a piece of paper that can stand up when folded in half, showing a seemingly simple, but condensed extraordinary wisdom.

Kong Ming's lock judgment is said to have been invented by Lu Ban from the late Spring and Autumn period to the early Warring States period. (Another legend was invented by Zhuge Liang during the Three Kingdoms period) In the Three Kingdoms period, Kong Ming made this invention guessed by Lu Banshi into a toy - Kong Ming lock.

Due to the failure of uploading**, it can only be expressed in text. The instructions that come with the slab are marked with only a few blocks, and there are a few squares where the numbers are not visible. The front of the first layer is followed by blocks 6, 8, 5, 3, and 2.

On the left side are 6, 8, and 7 squares. On the right side are 2 and 1 squares. The others will not be so detailed, leaving a little suspense, and it will be more rewarding for everyone to figure it out by themselves.

Knowing the pendulum of the first layer, the second layer, and the third layer refer to the number squares on the manual, and basically crack it.

There are dynamic diagrams in it, which are easy to learn.

A piece of 10 yuan and a piece of 2 yuan.

Eh, yours is the same as me, it's a puzzle game in the new curriculum standard for elementary school students, right? I can't spell it either.

Playing cards should have been invented by the Chinese. Because in the Song Dynasty in China, there was a kind of "leaf play" card (called "leaf play", two finger sizes. The 8-centimeter-long and wide-centimeter "leaf plaque" is framed in silk and paper, and the pattern is printed on a woodblock plate.

They believe that this kind of playing cards was introduced to foreign countries by merchants and missionaries in the Ming Dynasty or the Song and Yuan dynasties, and the West was inspired by this to change into the now popular playing cards.

There is another way to say it:

The Italians say that the first person in the world to invent playing cards was the Venetian. Ancient Venetian merchants went out to do business and invented the use of playing cards to calculate dates and entertainment.

The French say that the playing cards were designed in 1392 by a scholar specifically for the amusement of the mentally ill French Emperor Cours VI. The Belgian said:

As early as 1379, playing cards appeared in Belgium. However, there is still a document of a Swiss monk in the British Museum, which records that playing cards have been handed down to Switzerland since 1377.

Let's make it clear, big brother, what's nerve-wracking, twelve pieces, 3 words?