[1] The rules are similar to International draughts, but is notable for its unique feature of allowing for orthogonal captures (up, down, left, right) in addition to the familiar diagonal capture of most draughts variants.
[2] In 2020, the very first candidate tournament in Frisian draughts, the Fryslan Open, was held with competitors from Russia, Belarus, Ukraine, Czech Republic, Italy, Belgium and the Netherlands.
Many notable International draughts players, such as Alexander Georgiev, 2019 International Draughts World Champion, and Alexander Schwartzman, who would later become the 2021 International Draughts World Champion, joined to earn the right to face off against the 2018 Frisian draughts world champion Marten Walingsa.
[4] Folkert Groenveld, a Friesland native, won the Open, defeating all contenders unexpectedly and earning the right to challenge for the championship title.
He later lost to Marten Walinga in the 2021 world championship match in Harlingen, Netherlands, defeating him in two games, but losing or drawing the rest of the matches.