
1) Soviet game 2) Soviet invention
Found on
https://www.crosswordclues.com/clue/chapayev
[game] Chapayev (игра в Чапаева, igra v Chapayeva) is a game played on a checkerboard, a unique hybrid of checkers and billiards which is played throughout the territory of the former USSR. The aim is to knock the opponent`s pieces off the board. The game is named after the Russian Civil War hero, Vasily Chapayev. Chapayev is po...
Found on
http://en.wikipedia.org/wiki/Chapayev_(game)

(from the article `Vasilyev, Sergey Dmitriyevich`) ...from the Institute of Screen Art, Leningrad, and by the mid-1920s was directing documentaries with Georgy Vasilyev. In 1934 they wrote, produced, ...
Found on
http://www.britannica.com/eb/a-z/c/55

Series of 180mm artillery guns of naval origin [SU;RU]
Found on
https://www.encyclo.co.uk/local/20785
No exact match found.