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Three Setups Repetition Rule
The server fully supports this special rule and players can claim a draw according to this rule.
In this case two equal signs have to be written at the end of the move.
If the claim is correct, the game ends in draw immediately.
If the claim in incorrect, the game continues and a draw offer will be available for the opponent that she can accept, if she wants to. This feature has been created to be in accordance with the official FIDE rules.
Available from Dec 03, 2002.