expression, ichidan verb
sacrifice a bishop (shogi)
Shogi term: to give up one's bishop, often as part of a tactical exchange or gambit.
彼は角を捨てて攻めの形を作った。
He sacrificed his bishop to build an attacking formation.
Compound of 角 (kaku, 'bishop' in shogi) + を + 捨てる (suteru, 'to throw away, discard').