404. That’s an error.
The requested URL /add?source=atgs&feedurl=http%3A//www.juniorchess.ru/news%3Faction%3Dexport_rss was not found on this server. That’s all we know.
/add?source=atgs&feedurl=http%3A//www.juniorchess.ru/news%3Faction%3Dexport_rss