1. 1 19 What is the sudoku formula?

Formula: "Don't forget to fill in the middle of the ascending line in turn; Put it down when loading and unloading the box, and put it left when unloading the right box; The weight is filled in the box below, as is the upper right row. " This formula is not only applicable to the nine palaces, but also to the promotion of odd-numbered nine palaces, such as the five-five diagram and the seven-seven diagram.

Xu Yue's Shu Shu Ji Yi in the Han Dynasty: "The number of nine palaces and the five elements are similar to each other." Zhen Luan of the Northern Zhou Dynasty wrote: "Nine palaces, that is, two or four are shoulders, six or eight are feet, three are left and seven are right, nine are worn, and five live in the middle." If you allow this, you can get the "Nine Palace Calculation Diagram".

Game part

The first one is on a 3×3 grid. Eight small wooden blocks ranging from 1 to 8 are randomly placed in the grid, and the numbers around each space can be moved into the space. Players should rearrange the squares in the order of 12345678, and the person who spells the result with the least number of moves wins.

The second game, such as Jiugongge arithmetic game, advances the arrangement of eight numbers in a wooden lattice, with three squares in both directions, so that the sum of three numbers on two diagonal lines of each row and column is equal to 15. While calculating, we should also think about how to push the number box to the corresponding position. This game not only tests people's numerical reasoning ability, but also tests people's thinking logic ability.