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This may refer to the same qualification as International Go Instructor
– if so the articles should be merged and one made an alias,
– if not, the distinction should be explained.
See also this post in Life in 19x19.
Shidoin (指導員:しどういん) is a Japanese honorific title for a teacher in martial arts. It can be awarded by the Nihon Kiin and is held by the French amateur 6 dan Farid ben Malek.