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https://riichi.cologne/blog/2019/09-09-rinshan-kaihou-auf-der-connichi-2019/
https://riichi.cologne/en/blog/2019/09-09-rishan-kaihou-cologne-at-connichi-2019/
https://riichi.cologne/en/blog/2022/03-12-my-first-tournament-madeleine/
https://riichi.cologne/en/blog/2022/03-19-my-experience-of-berghem-tournament-ken-copy/
https://riichi.cologne/en/blog/2022/03-26-warae-no-taikai-2022-manuel/