It's easy to understand the numbers of chess. The full name of chess number is chess number. The whole figure is hexagonal, with 20 pieces in total. In the chessboard, make up two pairs of numbers from 0 to 9 10 according to the law. Generally speaking, before playing chess, you need to put ten pieces of the same color in the right position and put them into your own camp. The rule is to play chess diagonally through four operations. In the process of playing chess, you can use product sum method and difference sum method to calculate scores, in which product sum method is generally suitable for students who have learned multiplication and division, and difference sum method is suitable for students who have not learned multiplication and division.