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In chess, the threefold repetition rule states that a player may claim a draw if the same position occurs three times during the game. The rule is also known as repetition of position and, in the USCF rules, as triple occurrence of position . [ 1 ]
A stalemate is an automatic draw, as is a draw due to impossibility of checkmate. A draw by threefold repetition or the fifty-move rule may be claimed by one of the players with the arbiter (normally using his score sheet), and claiming it is optional. The draw by fivefold repetition or the seventy-five-move rule is mandatory by the arbiter.
The same position has appeared three times (or has appeared twice and the player claiming the draw can force the third appearance); this is the threefold repetition rule. [30] These rules help prevent games from being extended indefinitely in tournaments. There is no longer a rule specifically defining perpetual check as a draw. In such a ...
A draw by perpetual check used to be in the rules of chess. [15] [16] Howard Staunton gave it as one of six ways to draw a game in The Chess-Player's Handbook. [17] It has since been removed because perpetual check will eventually allow a draw claim by either threefold repetition or the fifty-move rule.
Threefold repetition – if the same position has occurred three times with the same player to move, a player may claim a draw. Perpetual check – situation in which one king cannot escape an endless series of checks but cannot be checkmated.
Dozens of Head Start programs, which provide child care and preschool education to low-income children, have been unable to access previously approved federal funding, putting some programs at ...
Chess has five ways of ending or achieving a draw from an opponent: stalemate, agreement between the players, the fifty-move rule (and its extension, seventy-five-move rule), threefold repetition (and its extension, fivefold repetition), or neither player having sufficient material to checkmate. At top-level play, roughly half of games end in a ...
The gold standard and most accurate way of testing whether a person has normal oxygen levels is to stick a needle into a person’s wrist and draw blood. An arterial blood draw, as it’s called ...