Prague Open 17 th International Chess Festival. part of CZECH TOUR / Series. 12 th – 19 th January Praha, Czech Republic Festival director : Dr. Jan Mazuch. 15th - 17th September Prague WDSF World Ranking Tournaments. Welcome to the 14th year Prague Open which takes place in the representative hall. Czech Open has a unique media coverage – TV broadcasting of elite men and Pixbo forward and freestyle master Runnestig: We felt like rock stars in Prague.