I just wanted to advertise my new book “Tarinoita matematiikasta: Alkuluvuista Elämän peliin” (in English “Stories about mathematics: From prime numbers to Game of life”). It's a combination between science popularization and recreational mathematics.
Here's the link, if you can't see the widget below: https://www.bod.fi/kirjakauppa/tarinoita-matematiikasta-janne-hakkarainen-9789528007456
Check it out!
Janne