Nimzowitsch explained this as a protected piece on the opponent’s side of the board that cannot be attacked by a pawn.
Karpov, Anatoly vs Kasparov, Garry 1-0 World Championship 35th-KK5 Rnd:17
Lyon/New York 1990.12.05
ECHESSPEDIA
Quotes of the Day
Who was the greatest chess player? If chess is an art, Alekhine. If chess is a science, Capablanca. If chess is a struggle, Lasker.
Saviely Tartakower
The blunders are all there on the board, waiting to be made.
Savielly Tartakower
Magnus is playing fantastic and I play like I always play, pretty badly
Anish Giri 2017
Peter Svidler clearly needs to be more ambitious and take more risk. 12 draws out of 14 games, I mean, come on, that’s not a Champion’s attitude there!
Anish Giri
Karpov is the official World Champion, but I’m not sure what that really means.
Jan Timman 1993