noun
shogi board
A board for playing shogi (Japanese chess), typically a wooden grid of 9×9 squares.
See also: 将棋 (しょうぎ)
祖父の家には古い将棋盤がある。
There is an old shogi board at my grandfather's house.
碁盤 is a Go board (19×19 grid), whereas 将棋盤 is a shogi board (9×9 grid).
Compound of 将棋 (shogi) + 盤 (board).