The hidden evolution of the black belt from Go boards to dojos

Wars & Conflicts · Published 16 October 2026 Swipe more like this →

In short: The black belt is a global shorthand for mastery, but its origins are surprisingly bureaucratic. It wasn't born in a martial arts dojo, but in the intellectual circles of the Edo period, evolving from a way to measure board game strategy into a cultural adhesive of Japanese society.

The 'dan' ranking system—derived from the Chinese character for 'step' or 'stage'—was originally designed to quantify skill in the board game Go. During the Edo period, professional player Hon'inbō Dōsaku devised the system to replace vague, comparison-based rankings. He likely drew inspiration from ancient Chinese systems, such as the 9 Pin Zhi, to establish a clear hierarchy of expertise. In this context, dan ranks (higher levels) were paired with 'kyū' (lower levels) to facilitate handicapping, where a single rank difference roughly equaled one free move. Martial arts adopted this structure much later. In 1883, judo founder Kanō Jigorō began awarding 'shodan' (the first dan) to senior students, replacing the older 'menkyo' system. The 'menkyo' system was more exclusive, often requiring the mastery of secret scrolls (densho) to earn the right to teach. Kanō’s innovation was to create a more structured, measurable progression. By 1886, he introduced the black belt (obi) as a visual marker for 'yūdansha' (dan holders), a practice inspired by the black ribbons used by advanced swimmers in Japanese schools. Today, the system serves as a cultural 'adhesive,' though it is not universal. While it implies a high degree of competence, a dan rank does not always equate to 'mastery' in the absolute sense; it often signifies the transition from a student to a licensed instructor. For example, in many styles, 'shidan' marks the mastery of basics, while 'godan' may grant the 'shihan' title, allowing one to open a school. Because these systems are style-specific, a dan in one art does not necessarily translate to the same level of proficiency in another.

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