Render unto Caissa what is Caissa's !

This was the strangest of games. White sacrifices a piece (actually it was a fortuitous blunder!) to catch the king in the centre but does not seem to have anything very decisive. Then black wins another piece (with check!) and looks to have saved his threatened rook. But two pieces to the good he is strangely helpless in the face of the spidery mating net orchestrated by the white queen on g7.

I have no hesitation admitting the finale was as much of a suprise to me as to my opponent - hence the above title 'render unto Caissa ...!