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Staunton style chess pieces. Left to right: king, rook, queen, pawn, knight, bishop. The rules of chess (also known as the laws of chess) govern the play of the game of chess. Chess is a two-player abstract strategy board game. Each player controls sixteen pieces of six types on a chessboard. Each type of piece moves in a distinct way.
A variant first described by Claude Shannon provides an argument about the game-theoretic value of chess: he proposes allowing the move of “pass”. In this variant, it is provable with a strategy stealing argument that the first player has at least a draw thus: if the first player has a winning move in the initial position, let him play it, else pass.
Kaufman has tried to compare White's first-move advantage with various positional or material advantages by having engines play games from modified versions of the opening position: he concludes that "if we define 1.00 as the advantage of a clean extra pawn in the opening with all other factors being equal, it takes above a 0.70 advantage in ...
Lenard Seawood promotes chess through his nonprofit Every Move Counts to help young people make the right choices
Chess strategy is the aspect of chess play concerned with evaluation of chess positions and setting goals and long-term plans for future play. While evaluating a position strategically, a player must take into account such factors as the relative value of the pieces on the board, pawn structure, king safety, position of pieces, and control of key squares and groups of squares (e.g. diagonals ...
With perfect play, in the worst winning position, the queen can win the rook or checkmate within 31 moves. [4] This endgame was known to be won since the 18th century, but it was then thought to be an easier win than it actually is.
Not all chess games reach an endgame; some of them end earlier. All chess positions with up to seven pieces on the board have been solved by endgame tablebases, [2] so the outcome (win, loss, or draw) of best play by both sides in such positions is known, and endgame textbooks teach this best play.
Handicaps (or "odds") in chess are handicapping variants which enable a weaker player to have a chance of winning against a stronger one. There are a variety of such handicaps, such as material odds (the stronger player surrenders a certain piece or pieces), extra moves (the weaker player has an agreed number of moves at the beginning of the game), extra time on the chess clock, and special ...