A pawn which cannot be guarded by a pawn, or which cannot advance to such a position.
In the following example, Karpov’s 31. Qc6! attacks the backward pawn sets up the double attack 33. Bxd5! giving White four pawns for the piece and a won position.
ECHESSPEDIA
Quotes of the Day
I don’t believe that Garry likes making decisions by democratic procedures. When there is a decision that he doesn’t like, he just turns against this organization.
Georgios Makropoulos 2013
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
He has weaknesses, as everyone does, but far fewer than those around him.
Veselin Topalov 2016
When I play well, I don’t win!
Maxime Vachier Lagrave 2017
I don’t particularly like being searched electronically. It is inconceivable that such a thing would happen in any other sport. It is fundamentally anti-chess, and I think the people who are behind this decision need their heads looked at! They are sick! They are ruining the very beauty that is chess.
Nigel Short 2016