Capablanca

Siegbert Tarrasch

The title International Grandmaster is awarded to superb chess players by the world chess organization FIDE. It is a lifetime title, in chess literature usually abbreviated as GM or IGM (this is in contrast to WGM for Woman Grandmaster and IM for International Master).

A chess variant is any game derived from or related to chess. In practice, a specific chess variant may be similar to chess or radically different. The broad definition of chess variants is so universal, it may include nearly any abstract battle or war game played upon a board.