Charles Rodway Clarke (born 21 September 1950) is a British Labour Party politician, who was the Member of Parliament (MP) for Norwich South from 1997 until 2010, and served as Home Secretary from December 2004 until May 2006.
A chess rating system is a system used in chess to calculate an estimate of the strength of the player, based on his or her performance versus other players.
The Elo rating system is a method for calculating the relative skill levels of players in zero-sum games such as chess.
The English Chess Federation (ECF) is the governing chess organisation in England and is affiliated to FIDE.
The Fédération Internationale des Échecs or World Chess Federation is an international organization that connects the various national chess federations around the world and acts as the governing body of international chess competition.
The Pirc Defence (correctly pronounced "peerts", but often mispronounced "perk"), sometimes known as the Ufimtsev Defence or Yugoslav Defence, is a chess opening characterised by Black responding to 1.e4 with 1...d6 and 2...Nf6, followed by...g6 and...Bg7, while allowing White to establish an impressive-looking centre with pawns on d4 and e4.
Sir Richard William Barnes Clarke, KCB, OBE (commonly known as Otto Clarke) (13 August 1910 – 21 June 1975) was a British civil servant.
A sports rating system is a system that analyzes the results of sports competitions to provide ratings for each team or player.
In game theory and economic theory, a zero-sum game is a mathematical representation of a situation in which each participant's gain or loss of utility is exactly balanced by the losses or gains of the utility of the other participants.