The party's first extraordinary congress was held on 27-28 December 2006, with 954 delegates.
On December 17, 2005 an extraordinary congress was held to elect new members.
A new central committee would be chosen at an extraordinary congress, fixed for April 10.
On Wednesday, the badly split party will convene an extraordinary congress of 1,618 delegates to shape its future course.
Nor was it clear whether the talks would begin before the Communists open an extraordinary congress here on Dec. 15.
He said that the international federation could consider South Africa's readmission at an "extraordinary congress."
On March 14, 1920, an extraordinary congress of Union was held in Žilina.
RU held a fifth, extraordinary, congress in 1983.
The split was formally approved at an extraordinary congress in Prague on Feb. 23.
Gamassa hailed the decision as "a confirmation of the legality of the extraordinary congress".