Roskomnadzor blocked the site of the largest English-language forum for Olympiad math Art Of Problem Solving, trying to restrict access to Telegram messenger. First the lack of access to paid attention in your Facebook user forum Sergey Markelov.

When you try to log on to the website Art Of Problem Solving information on the lock is missing, however, the IP address ( of the resource contained in the register of banned sites, which leads Roscomnadzor. As the reasons stated the decision of the Tagansky court of Moscow from 13 April 2018 on the Telegram lock on the territory of Russia.

As reported by Roskomsvoboda, address made in the register on January 15.

According to Markelov, access to the forum at first limited operators “Beeline” and “MegaFon”. He noted that he had never seen on the forum “extremist criticism of Putin” or “proselytism “Jehovah’s Witnesses” (an organization recognized as extremist and banned in Russia). “But there is a lot of discussion of geometry, inequalities, polynomials” – quoted Markelov TV channel “Rain”.

Art of Problem Solving – the largest resource for learning to solve Olympiad problems math. Monthly the site is visited by about 1.7 million people, data from SimilarWeb.

From April 2018 in Russia trying to block the Telegram after the messenger refused to give FSB decoding keys for the correspondence of suspected terrorists. Previously, users complained that the attempt to block Telegram Roskomnadzor restricts access to other resources.