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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.
=Forum Posts=
==1998 ...==
* [https://www.stmintz.com/ccc/index.php?id=18139 Horrible move!] by [[Tony Hedlund]], [[CCC]], May 07, 1998 » [[HiarcsHIARCS]]
* [https://www.stmintz.com/ccc/index.php?id=49261 50 move rule question] by [[Uri Blass]], [[CCC]], April 20, 1999
==2000 ...==
* [http://www.open-chess.org/viewtopic.php?f=5&t=3093 Losing by draw] by Hamfer, [[Computer Chess Forums|OpenChess Forum]], March 17, 2017
* [http://www.talkchess.com/forum/viewtopic.php?t=64853 Fifty move counter and Null move] by Tamás Kuzmics, [[CCC]], August 09, 2017 » [[Halfmove Clock]], [[Null Move Pruning]]
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=66023 75 moves FIDE-rule in section 9.6b] by [[Norbert Raimund Leisner]], [[CCC]], December 16, 2017
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=69750 changing the 50 move rule to 5 move rule] by [[Uri Blass]], [[CCC]], January 28, 2019
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=72308 50 move counter in FEN and GUIs] by [[Jouni Uski]], [[CCC]], November 12, 2019
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=72578 Graph History Interaction 2 questions] by [[Jouni Uski]], [[CCC]], December 15, 2019 » [[Graph History Interaction]]
==2020 ...==
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=73374 Turning off 50-move draw rule in Stockfish & other engines] by jp, [[CCC]], March 15, 2020
=External Links=
* [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]]'''
