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
Kasparov doesn’t care about chess, but only about himself and his political goals
Kirsan Ilyumzhinov 2015
School is a waste of time for me. I want to be world chess champion, and they can’t teach me anything there.
Robert Fischer 1961
Preparation for a world championship was always an arms race, in previous times with books, then with seconds, today with computers.
Vishy Anand 2008
To Put It Mildly, I Have Not a Bit of Respect For Topalov
Vladimir Kramnik 2015
Garry has done a lot over the chess board – unbelievable things. He is the greatest world champion in the chess history. The question is what he has done for the federations, what he has done for his own federation.
Georgios Makropoulos 2013