A go board: a board used to play the game of go, usually wooden or plastic with a grid (commonly 19×19 lines).
友達と碁盤を囲んで対局した。
I played a match with a friend around the go board.
碁盤は厚みや材質によって音や手触りが変わる。
The sound and feel of a go board vary depending on its thickness and material.
この碁盤は保存状態が良く、目盛りもはっきりしている。
This go board is well preserved and its markings are clear.