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
You can’t look too annoyed or they’ll look for the mistake you’ve made. A lot of the time it’s about looking for these opportunities and if you give them a clue, the good players will find it.
Magnus Carlsen 2016
My style is based on giving energy and creating. Karpov’s style is something that is probably taking energy from his opponent. NIC 1989
Garry Kasparov 1989 NIC
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
Carlsen will sooner or later become World Champion. I like him, he is a Monty Python fan, just like me.
Vishy Anand 2008
It isn’t important what comes off the board, but what stays on!
Yasser Seirawan