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R

rank

The rows of the chess board are called ranks. For instance, all squares a3, b3, ..., to h3 belong to the same rank. The number of the rank depends on the point of view: the pawns start out on the second rank and promote on the 8th rank. Therefore, the square a1 is on the first rank of white but on the 8th rank from black's point of view.

rapid chess

Chess with reduced time control, usually 30 minutes. Sometimes also called quick chess.

rating

Quantitative measure for a chess player's strength. Chess ratings are usually determined from games against other rated chess players. There are many different rating systems that cannot be directly compared.

round robin

Tournament organization form in which each player plays every other participant an equal number of times. In a double round robin tournament, every player plays twice against every other player, once with White and once with Black.

RD Glossary by Run Digital