On the 3×3 grid, eight small wooden blocks from 1 to 8 are randomly placed, and the numbers around each space can be moved into the space. Players should rearrange the small pieces of wood in the order of 12345678, and the one with the least number of pieces will win.

Jiugongge Sudoku

It is a mathematical puzzle game that originated in Switzerland at the end of 18, then developed in America and Japan. A puzzle is a square with nine squares (that is, three squares wide by three squares high), and each square is subdivided into nine squares. Fill in the numbers of 1 to 9 in each small nine-square grid, so that the numbers in each column and row of the whole big nine-square grid are not repeated.

The logic of Sudoku is very simple, and the number arrangement is ever-changing. Many educators think that Sudoku is a good way to exercise the brain.