A grandmaster is a person who has achieved an extremely high level of skill or proficiency in a particular activity, often through years of practice and dedication. In chess, for example, a grandmaster is someone who has demonstrated exceptional ability and expertise in the game, typically by winning several major tournaments and meeting specific criteria set by international chess organizations such as FIDE (Fédération Internationale des Échecs). The term "grandmaster" can also be used more broadly to refer to anyone who is an outstanding or highly skilled practitioner in a particular field, such as music, art, literature, or science.