Chess

Chess

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Chess

Rating

Games; Chess

A number that measures a player's relative strength. The higher the number, the stronger the player. In the UK, the term grading is used in place of rating.

Time control

Games; Chess

The amount of time in which each player must play a specified number of moves. In international competitions, the typical time control is 40 moves in 2 hours for each player.

A method used to determine a single winner when tournament play produces a tie. One tie-break is the play-off, but due to the time it takes to play additional games, this is often not feasible. Ties ...

Three-fold repetition

Games; Chess

Occurs when the players have been moving back and forth, repeating the same position. Often happens when a player, behind in material and facing eventual loss, sacrifices for a perpetual check. A ...

Threat

Games; Chess

A move which contains an implied or expressed attack on a piece or Pawn or the position of the opponent.

Stalemate

Games; Chess

A situation in which one side is unable to make a legal move although the king is not in check. A stalemate is a draw. For over 100 years this has been deemed a draw. Before that, stalemate was ...

Sonneborn-berger score

Games; Chess

A tie-breaking system. An individual's Sonneborn-Berger score equals the sum of the scores of the players beaten plus half the sum of the scores of players with whom draws were scored.