18.12.1959 (64 gadi)
Nikolay Nikolayevich Konstantinov (Russian: Николай Николаевич Константинов; born 2 January 1932) is a leading Soviet and Russian mathematical educator and organizer of numerous mathematics competitions for high school students. He is best known as the creator and chief organizer of the Tournament of the Towns. For his work he was awarded the Paul Erdős award in 1992.