Shogi Player
Go Player
noun
A chess piece samurai is someone who plays chess or go, making this word a shogi player or go player.
きし
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
その棋士は、この建物に自分専用の練習部屋を構えています。
The shogi player has his own practice room in this building.