Endgame Mate

PLAYED in my first Royal Beacon Seniors, which ended today.
The congress, held at the Royal Beacon Hotel in Exmouth, Devon, is divided into players aged 65+ and 50-64 - colloquially known as the Senior and Junior Wrinklies.

Royal Beacon...stylish venue

I scored +2=2-1 for a grading performance of 184 (15 over my ECF of 169).
None of the games was especially noteworthy, but I did have a neat endgame finish in round four.

Position after White's 33rd move in Spanton (169) - Philip Kennedy (158*)

Black is lost whatever he plays, but PK's choice of the active ...
33...Kf5?
...walked into a mating net. The game finished:
34.Kf3 Rf7 35.g4#
34...h5 would only have delayed the mate after 35.h3, while 34...Rg8 would have lost instantly to 35.Rf6#.
*PK does not have a currently published ECF grade, so I have converted his Fide elo.