noun
checkmate move; mating move; endgame sequence
Shogi term for a forced sequence leading to checkmate, or the final stage of a game.
この詰め手は三手詰めです。
This mating sequence is a three-move checkmate.
彼は詰め手を間違えて逆転負けした。
He misplayed the endgame sequence and lost by a reversal.
noun
winning move; finisher; means of defeating
Extended from shogi to any decisive move or method to defeat an opponent, such as in sports, debates, or competitions.
彼の必殺技が試合の詰め手になった。
His signature move became the finisher of the match.
議論で相手を追い詰める詰め手を用意していた。
He had prepared a winning move to corner his opponent in the debate.
noun
packer; baggage handler; mover
Rare occupational term for someone who packs or handles luggage; not commonly used in modern Japanese.
引越しの詰め手としてアルバイトをした。
I worked part-time as a mover for a moving company.
詰み is the state of checkmate itself, while 詰め手 refers to the move or sequence that leads to it.
必殺技 is a special finishing move in fighting games or fiction, whereas 詰め手 is a broader term for any decisive tactic.
Compound of 詰め (tsume, 'checkmate' or 'packing') + 手 (te, 'move' or 'person'). The shogi sense is primary; the occupational sense is a straightforward extension of 'packing person'.