角行は斜めにどこまでも進める駒だ。
The bishop is a piece that can move any distance diagonally.
角行が敵陣に入って成ると竜馬になる。
When the bishop enters the enemy camp and promotes, it becomes a dragon horse.
将棋では、飛車と角行を合わせて大駒と呼ぶ。
In shogi, the rook and the bishop are together called the major pieces.
序盤で角行を交換する戦法を選んだ。
He chose a strategy of exchanging bishops in the opening.