Rank in Judo first five are colored black, 6th, 7th, and 8th "dan" have alternating red and white panels (dandara), and for 9th, 10th "dan" and above, the belts are solid red. In judo's promotion system as originally finalized by Kanō around 1926 there was no maximal dan rank, and judoka holding 10th dan would normally wear a red belt, but also could wear a white belt, the same color as the lowest kyū rank. However, since the highest dan rank reached in judo for a living person or conferred posthumously remains 10th dan, any judo dan rank higher than 10th dan is
Kosen judo ordinary contenders, a captain and a vice-captain, and five replacements in case of injuries or retirements. Every match is composed of a single, six-minute round, changed to an eight minute round when the contenders are captains or vice-captains. The league is hosted as a "kachi-nuki shiai", meaning every winner stays on the mat to face the next member of the rival team. At the end of the event, victory is given to the team with the highest numbers of matches won or with the last man on the field. Kosen judo Today, the term "kosen judo" is frequently used to