Checkmate
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Checkmate is any game position in chess and other chess-like games in which a player's king is in check and there is no possible escape. Checkmating the opponent wins the game.
Black is checkmated and loses the game.
Descriptive notation
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Descriptive notation is a chess notation system based on abbreviated natural language. Its distinctive features are that it refers to files by the piece that occupies the back rank square in the start
Scoresheet in descriptive notation used by Bobby Fischer in a 1970 game against Miguel Najdorf.
This player uses "KT" for knight, and "sq" for the first rank.
This player writes "Knight to Bishop's square" as Kt–B and "King's Rook to King 1" as KR–K.
This player writes check as (CH). On one occasion, "Rook on Queen's square to Queen's Bishop's square" is written R–Q–QBsq.