Standard chess and card game dimensions 19x19: In the Go game, 19x19 refers to the size of the chess pieces. The board consists of 19 horizontal lines and 19 vertical lines that intersect, forming 361 points of intersection. Two players in the game place their stones on these intersections. This is the standard specification for Go boards, and this type of board is used for professional competitions and most formal games. Dimensions and accessories: The Go board dimensions are 36.5×36.5×2.5cm. Includes 181 black magnetic single convex Go stones and 180 white magnetic single convex Go stones. Each gemstone measures 6 x 17 millimeters and has 2 stone bowls. Magnetic Set: The chessboard and chess pieces have built-in magnets, offering high-quality magnetic functionality. When playing chess, even if the board is tilted or shaken, the chess pieces can remain firmly attached to the board and are not easily lost. You can also easily move the pieces during the game, thereby reducing external interference with the game. The portable foldable chessboard features a collapsible design, saving space and making it easy to store and carry. Can be easily placed in a backpack and taken out at any time. Family board game and travel companion: not only can be played at home, but is also suitable for camping, traveling, trains, and park play. Allows people to spend happy moments together. While enjoying fun and entertainment, it can also strengthen relationships or friendships. In addition, it can also improve thinking skills and concentration.