A nuclear bomb is about to explode - at this time underground. Talented mathematician Bob manages to block the explosion by changing the program of the automatic cart that assembles the bomb. But there is a black sheep in every flock, even when it comes to mathematical solutions.
Anatoly Dneprov (also spelled Anatoly Dnieprov, Ukrainian: Анатолій Дніпров, pseudonym; real name Anatoliy Petrovych Mitskevitch[1]) was a Soviet physicist of Ukrainian ancestry, and an author whose science fiction stories were published in the USSR (and also the United States from 1961 to 1970).[2] He is known best for his stories The Maxwell Equations (1963) and Iva.