I received the following email from Jan Zverina earlier this week:
I would like to let you know that the Czech Puzzle Championship 2017 will take place in Prague on 10-11 June 2017. Individual and team competition (three members) + individual competition in sudoku. Instruction and competition booklets will be available in English. Participation fee 10 EUR, accommodation 17 EUR/night (https://www.winepensionprague.com). Free transfers from airport/train station/bus station. More details will be available in March/April.
Please feel free to ask further questions in this thread