On Thursday, August 29, 2019 at 10:27:27 PM UTC-7, Chris Wedgwood wrote:
What glider type was this?

SZD-12 Mucha 100
https://en.wikipedia.org/wiki/SZD-12_Mucha_100
http://www.piotrp.de/SZYBOWCE/pszd12.htm

"gravitation takeoff"
Bezmiechowa , szd-12A "Mucha 100 A" - samo-start grawitacyjny
https://www.youtube.com/watch?v=la3rb9LfG0Q