Category 'Akademik' is called for competitiors who study at universities and higher professional schools (i.e. 'VŠ' and 'VOŠ') in the Czech Republic, from undergraduate to postgraduate level
Category 'Žák' is called for students who attend the elementary or secondary school (i.e. 'ZŠ' or 'SŠ') in the Czech Republic
Category 'Učitel' is called for teachers from all types of schools and universities in the Czech Republic
'Open' category = all competitors.
Moreover, all Czech competitors and foreign members of HALAS - Czech Puzzle Association will be classified as category 'HALAS liga'.
