π - day

Siófok - Theater Café, 1:00 p.m. - 6:00 p.m., March 14, 2026. There will be: pizzas, Piroska syrups, π-tesok mathematical and logic games, chess and chess variants, Rubik's cubes. A conversation and book signing with 99-year-old Gyula Obádovics. Participation is free of charge. Attendance is not mandatory, but highly recommended.