Legend has it that on the eve of the French Revolution, a noble prisoner was held in the Bastille, who faced the iron window, bored, and wanted to play chess to kill time, but because he was imprisoned alone, he could not find an opponent, so he designed a single chess piece, that is, independent diamond chess, on the chessboard of the "fox and goose" popular in Europe at that time.
On July 14, 1789, the people of Paris revolted and broke through the Bastille, and the prisoner was rescued, making the game popular in society to this day.
Independent (grain) diamond chess, also known as single noble chess, known in China as Kong Ming chess.
The "independent diamond chess" invented by the French, the "Huarong Road" invented by the Chinese, and the "Rubik's Cube" invented by the Hungarians are called "the world's three incredible games".

The "independence" of independent diamond chess refers to the independent chess of the opponent, which is also the harmonic sound of "single grain", which means that the ultimate goal of the chess piece is to leave only one piece in the center of the board. This is different from the game-style chess game, which is completely a self-challenge.
The method of independent diamond chess is similar to checkers, the rules: after the chess pieces are filled with the board, the chess pieces in the center of the board are removed, and when playing, they are like checkers, and they can only jump horizontally or vertically, not obliquely, and every time the pieces are jumped, the pieces that are skipped are eaten, and each step must be jumped and can be jumped continuously, and cannot be empty.
In the end, the number of moves played at the end of the game is fewer or fewer, and the remaining pieces are fewer or fewer.
6 left: General
3 left: Smart
1 left: The Master
There is 1 left and in the center: Genius
"With only 18 moves, only 1 son is left, and it falls in the middle of the chessboard" is the highest realm pursued by the wise.
Gameplay recording
Before 1908, it was thought that it took 23 steps to get "genius"
In 1908, Dudane turned the record into 19 steps to get "genius"
In 1912, Buchholt set a record of 18 steps that could be proved to be absolute by Professor Bisney of the University of Cambridge in the United Kingdom. That is, it takes at least 18 steps to get "genius"
In 1986, in the "Independent Diamond" competition held in Shanghai, a Chinese female worker, Wan Pingping, found another way to get a "genius" in 18 steps.
Later, using the Shanghai computer, it was found that there were only two 18-step "genius" methods, namely Bucht's and Wan Pingping's.
According to the rules of independent diamond chess, the chess is played according to this layout, and finally one piece is left in the center;
Record the last few pieces left in each row of chess, where they are and how many steps they have taken.
Fox and goose
Rules of the Game:
1. Two sons on one side are foxes and one side is a goose. The goose is only allowed to move one son at a time, and can only move forward, to the left and right, and not to retreat, and the fox is only allowed to move one son at a time, but can retreat and go diagonally.
2, the fox jumped over the goose can eat the goose, can eat continuously, if two foxes attack the goose fence, the fox wins.
3. The goose surrounds the fox (four geese surround a fox), and the fox dies (the goose cannot eat the fox).
The benefits of educational toys for the mind
Profound thinking of students: whether they are good at thinking deeply and logically and clearly; good at grasping the essence and law of things, rather than just knowing the appearances and illusions of things.
In the learning of the puzzle classroom, the profundity of students' thinking is often reflected in the process of cracking the instrument, such as discovering the strategy of the instrument cracking and summarizing the laws contained therein; being able to identify the key information of the instrument cracking, such as the primary and secondary factors, key links, core elements, etc. in the cracking; and being able to analyze the influencing conditions in the cracking of the instrument, such as finding favorable conditions, obstacle conditions, necessary conditions, and sufficient conditions.
Observe, analyze, manipulate, think, explore
The breadth of students' thinking is manifested in broad thinking, multi-faceted observation and multi-angle thinking; can combine points and surfaces, comprehensive analysis of problems; good at solving problems through extensive associations, finding hidden relationships, and so on.
From "understanding", "application" to "analysis" and "creation", from point-line-surface, exercise the broad quality of thinking.
The originality of thinking is the advanced form of thinking, which is the quality of thinking expressed in the process of taking countermeasures in the face of new situations or difficulties, and solving problems uniquely and novelly. Practical activities such as task creation, invention, innovation, and discovery are closely related to the originality of thinking.