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'''[[Main Page|Home]] * [[Chess]] * [[Draw]] * Fifty-move Rule'''
The '''Fifty-move rule''' states that a [[Chess Game|game of chess]] is considered [[Draw|drawn]] after '''fifty''' consecutive [[Moves|full moves]] without a [[Captures|capture]] or a [[Pawn Push|pawn move]]. If the last move of such series delivers a [[Checkmate|checkmate]], this takes precedence over the 50 move rule. Inside a chess program, the [[Halfmove Clock|halfmove clock]] takes care of enforcing fifty-move rule. If the halfmove clock becomes greater or equal than 100, and the [[Side to move|side to move]] has at least one [[Legal Move|legal move]], a [[Score#DrawScore|draw score]] should be assigned to that [[Node|node]], with appropriate [[Protocols|protocol]] handling and [[Chess Game#endofgame|game state]] transitions, if the node is already the [[Root|root]] and there is no mate in one.
* [http://www.fide.com/component/handbook/?id=124&view=article Fide Handbook - E.I.01A. Laws of Chess]
* [http://galen.metapath.org/egtb50/ Endgame tablebases with the fifty-move rule] by [[Galen Huntington]]
* [http://www.horst-wandersleben.de/Wette.htm Computerschach - Eine Wette, die ich gerne verloren habe] by [[Horst Wandersleben]] (German) <ref>[[Dieter Bürssner]] found a game finished in a [[Fifty-move Rule|fifty-move rule]] draw, where [[Castling|castling]] occurred during the last fifty moves</ref>
=References=
<references />
'''[[Draw|Up one Level]]'''
