R

Rank
A horizontal row of squares. Conventionally Ranks are numbered 1-8 with 8 being at the top of the board from White's perspective. Files are lettered a-h with a being to the left from White's perspective.So for example the expression "Rook on the 7th rank", depicts a rooks action as shown below:-

Recapture
If a player responds to the opponent's capture of one of his pieces by capturing the enemy piece involved, he is said to have recaptured the piece.

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Repertoire
The term "repertoire" usually refers to the Openings that a player regularly plays. A repertoire will often focus in on a player's "pet lines" - i.e. lines that they intend to play regularly or have played regularly in the past.

The Chess legend an former world champion Robert J Fischer had a very narrow but extremely well researched Opening repertoire. But shockingly he switched his repertoire completely in his World championship match against Spassky by starting the game with 1.c4 in a few of the games. The intention was presumably to avoid the Soviet opening preparation against him.

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Resign
To give up a game. In Over-the-board chess this is often indicated by knocking one's king over. On Chessworld, players can use the Resign button.

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Rook
A chess piece. Sometimes referred to as a "Castle". A rook has horizontal and vertical movements as shown below:-

Rook on the 7th
A powerful endgame idea which was highlighed by Nimozvich in "My system". There are numerous games where a rook on the 7th has often been decisive in cutting off the opponent's king from getting more aggressive, and also targetting pawns as well.

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Rules of Chess
The "Rules of Chess" govern not just the mechanics of how pieces legally move but also broader considerations. ChessWorld interprets the fundamental rules of Chess as indicated by Fide, and modifies them to be in line with online server based correspondence chess.

The Rules of chess for Over-the-board play are given by the Fide World Governing body of Chess, and can be found currently on this link:-

Fide Over-the-board rules of chess

The Articles of most relevance to Internet chess on ChessWorld are prefixed by an asterisk:-

* Article 1 covers The nature and objectives of the game of chess
* Article 2 covers The initial position of the pieces on the chessboard
* Article 3: The moves of the pieces
Article 4: The act of moving the pieces
* Article 5: The completion of the game
* Article 6: The chess clock
Article 7: Irregularities
Article 8: The recording of the moves
* Article 9: The drawn game
Article 10: Quickplay Finish
Article 11: Scoring
Article 12: The conduct of the players
Article 13: The role of the arbiter
Article 14: FIDE

The essential content of Article 3 is illustrated in the Help and Feedback ... Introduction to Chess section.

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