A pawn that is not opposed by an enemy pawn either on its own file or adjacent files.
ECHESSPEDIA
Quotes of the Day
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
Carlsen will sooner or later become World Champion. I like him, he is a Monty Python fan, just like me.
Vishy Anand 2008
I believe motivation is one of the most important things one has to have after playing for many years. Chess is a very complete, well thought-out game, which is why people have been playing it since ancient times.
Judith Polgar
In the 70s Karpov was a darling of the Politburo or the political elite. So Kramnik is now. Just like the old days. But at least Karpov, unlike him, played in and won qualifying matches.
Veselin Topalov
A good sacrifice is one that is not necessarily sound but leaves your opponent dazed and confused.
Rudolf Spielmann