Checkmate !

Have you ever had someone resign just before you would have checkmate in say, one or two moves? Or have you ever had an opponent let time run out when your very next move would have been checkmate? Or let me reverse it. Would you resign or let time run out just to deny your opponent the 'pleasure' of checkmate? This is just in fun but I am curious - CaptJackAubrey, Chess.com blog

Diagram - how did Black achieve mate in 2 ?
                  White's reply was not forced

Four checkmate games from ChessWorld competition delivered with queen, rook, bishop and knight.
    Diagram game is the first of these