noun, noun or participle which takes 'suru'
interposed piece; blocking piece
Shogi term: a piece placed between the opponent's attacking piece and one's own king to block a check. Compare 間駒 (あいごま), which is a more common term for the same concept.
See also: 間駒
王手を防ぐために、金を間遮として打った。
To defend against the check, I dropped a gold general as an interposed piece.
In this position, using a pawn as a blocking piece is best.