White makes the interference to avoid a stalemate by allowing a fight to the opposite King, which is met by a discovered mate by the same white piece.
ECHESSPEDIA
Quotes of the Day
I can’t tell the difference between 100 zillion positions and 497 zillion positions, but if it helped Deep Blue play stronger, so be it. I was looking forward to Deep Blue boldly going where no man had gone before. 1997″
Vishy Anand
I have always a slight feeling of pity for the man who has no knowledge of Chess
Siegbert Tarrasch
There is no room for gallantry in chess.
Irving Chernev
When I see the Berlin defence, I am almost happy that I am not longer a top player!
Nigel Short 2016
Maybe I had something of Capablanca. Why should I prepare when I have ideas?
Svetozar Gligoric 1989 NIC