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 personally believe that Karpov should have been more generous with Kirsan Ilyumzhinov. Kirsan is the only president in the history of FIDE, and maybe in the history of all international federations, who has contributed dozens of million dollars for the sport he loves. By the way, some of these millions went directly to Anatoly’s pocket…
George Makropoulos 2005
Chess is a game by its form, an art by its content and a science by the difficulty of gaining mastery in it. Chess can convey as much happiness as a good book or work of music can. However, it is necessary to learn to play well and only afterwards will one experience real delight.
Tigran Petrosian
Karpov Lost, Kasparov Lost, the Only One Who Remained Is Me.
Silvio Danailov 2014
In addition to talent, Magnus has the health of a racehorse and a powerful nervous system.
Vladimir Kramnik 2015
Everything is very concrete nowadays. The computer often gives unnatural moves which are correct, but sometimes hard to remember. You know a line is correct, but then your forget something and lose terribly.
Daniel Stellwagen 2010