A heraldic piece displaying different identity symbols on each side. The piece may be flipped over at the close of a move (or as a move in itself) and assume its alternate identity.
ECHESSPEDIA
Quotes of the Day
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
I will be World Champion, if not now I will be World Champion later, but of course better now!
Sergey Karjakin 2016
Good players actually use their long-term memory much more than inexperienced players, who use their short-term memory. Good players try to recall patterns.
Magnus Carlsen 2016 2016
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
Some players lose ability to think independently and rely on computers completely.
Lajos Portisch 2012