一、棋盘：盘面为长方形，上面画出七条横线和八条竖线，共构成56个交叉点

1. Chessboard: The board is rectangular, with seven horizontal and eight vertical lines drawn on it, forming a total of 56 intersections. In order to facilitate the determination of the position of each point on the board and the need for notation, the coordinate method is used for numbering. From left to right, use Arabic numerals to code as No. 1, 2, 3, 4, 5, 6, 7, and 8. The horizontal line from top to bottom in lowercase letters becomes A, B, C, D, E, F, G lines, when marking the position, first vertical then horizontal, for example: 2B, 3F, etc. The surface of the entire chessboard is shown in Figure 1.

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1、 Chessboard: the board is rectangular, with seven horizontal lines and eight vertical lines drawn on it, forming 56 crossing points. In order to determine the position of each point on the board and the need of notation, the coordinate method is used for numbering. The vertical lines are numbered in Arabic numerals from left to right in turn into the first, second, third, fourth, fifth, sixth, seventh and eighth paths. The horizontal lines are changed into a, B, C, D, and E in small letters from top to bottom , F, G lines, when marking the position, first vertical and then horizontal, for example: 2B, 3F, etc. The whole chessboard is shown in Figure 1.<br>