Леонид Антонович Исаев (24-11-1899 - 02-09-1932) Russian chess composer (Leonid Antonovich Isaev)

He was a two -mover chess composer and is considered as one of the creators of the modern twomover, with Barulin.
He collaborated with many magazines, such as "Задачи и этюды" (Zadachy i etyudy) "Шахматы" (Shakhmati) or "64", and wrote a few problem books like "Шахматная задача" (1925), "300 шахматных задач" (1933).