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![]() Date: 2011-02-13 09:16:19Chess theory Rybka Vasik Rajlich Chess openings Iweta Rajlich International Paderborn Computer Chess Championship Sicilian Defence Zugzwang Passed pawn Chess Games Computer chess | Source URL: www.rybkachess.comDownload Document from Source WebsiteFile Size: 128,64 KBShare Document on Facebook |