Prointer ITSS was the general sponsor of the Banja Luka Open 2019 event. It is a Rubik's Cube and other puzzles championship, which was attended by 55 competitors from nine countries, who showed their skills in 13 disciplines.

Top competitors, among other things, have demonstrated their skills in disciplines such as solving a Rubik's Cube blindly and with one hand. Among the masters of Rubik's Cube solving from BiH, Serbia, Croatia, Slovenia, Northern Macedonia, Russia, Greece and other countries, the youngest is nine and the oldest is 49 years old.

The final results of the competition were announced on the World Association of Rubik's Cube website, May 28.