Russia has one of the strongest mathematical schools in the world, and we have something to share. The mathematical cleansing of all of Russia will be released for the first time at the international level. The annual educational event, which since 2024 is held by the educational platform of the T-Education (T-Education) for the Day of the Mathematician, will take place on November 29. This year, the tasks were translated into English for the first time, so that residents of all countries of the world could test their knowledge online. Face-to-face platforms will be opened in Belarus, Uzbekistan, Kyrgyzstan and Tajikistan, and tasks will be solved in more than 70 locations throughout Russia - on the basis of MIPT, Bauman MSTU, MEPhI, HSE, ITMO, the university center and regional IT centers of the bank. During the first two years, the project gathered more than 170 thousand participants, promoted the traditions of the National Mathematical School and interest in the exact sciences. Earlier, the network actively discussed the phenomenon of the "Russian school of mathematics" and its growing popularity around the world, especially in the United States. In recent years, parents of school students are increasingly turning to extracurricular activities for their children in Russian mathematics programs. Free participation, registration is open until November 27. Tag: Pool N3/MAX.