Short answers, pulled from the story.
The Supreme Court of the Russian Federation traces its institutional lineage directly to the Supreme Court of the Soviet Union. This predecessor served as the highest judicial body during the existence of the USSR before the dissolution of that state in 1991.
Article 22 of the Federal Law mandates that the permanent residence of the Supreme Court is Saint Petersburg. Until that date arrives, the court exercises its powers in the city of Moscow.
There are 115 members serving on the Supreme Court today who must be citizens of Russia at least 35 years old upon appointment. They require legal education and at least 10 years of professional service before eligibility for nomination by the President of Russia.
This high court holds original jurisdiction over challenges against federal acts including decrees issued by the President of Russia and the Government of Russia. It also handles challenges regarding delegated legislation from governmental agencies and disputes involving the Central Electoral Commission.
Supreme Court judges are nominated directly by the President of Russia and appointed after a vote by the Federation Council. Plenary sessions occur at least once every four months within the court where all judges and the Prosecutor General of Russia attend.