打うち歩ふ詰づめ

noun

checkmate by a dropped pawn (illegal move)

A shogi rule: delivering checkmate by dropping a pawn is illegal. The term refers to the forbidden move itself.

• 将しょう棋ぎでは打うち歩ふ詰づめは反はん則そく負まけになる。

  In shogi, checkmate by a dropped pawn results in an illegal-move loss.

• 初しょ心しん者しゃは打うち歩ふ詰づめに気きをつけなければならない。

  Beginners must be careful not to commit an illegal pawn-drop checkmate.