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
I may be an old lion, but I can still bite someone’s hand off if he puts it in my mouth
Wilhelm Steinitz
We will note the openings used by the participants of a nine-round match. The age of openings is considerably higher than the age of both rivals. Some opening positions could be analyzed by Steinitz when he was preparing to his match with Zukertort.
Mikhail Tal 1966 (Petrosian-Spassky match)
I am fighting for the future of chess, for the integrity of the game I love. Only when it’s clean it can grow.
Garry Kasparov 2014
Some twenty years ago an English journalist complained that in sports, only chess and marbles were above suspicion. One wonders what has happened in the world of marbles.
Hans Ree
Fischer wanted to prove that all world championship games after his victory were prearranged. He did not convince me.
Vishy Anand 2008