European Championship, System / Rules 21/04/2023 – V23
Older editions: 12/10/2021 – V2021_1, 21/09/2020 – V2020_2, 2019 V20 22/04/2019, V19 14/07/2018, V18 - 16/06/2018, V16 - 22/10/2017, 2016, 2015, 2012, 2010