Passage: A speedcubing championship organized by the Guinness Book of World Records was held in Munich on 13 March 1981. The contest used standardized scrambling and fixed inspection times, and the winners were Ronald Brinkmann and Jury Fröschl with times of 38.0 seconds. The first world championship was the 1982 World Rubik's Cube Championship held in Budapest on 5 June 1982, which was won by Minh Thai, a Vietnamese student from Los Angeles with a time of 22.95 seconds. Since 2003, the winner of a competition is determined by taking the average time of the middle of three of five attempts. However, the best single time of all tries is also recorded. Swali: Katika mwezi gani mashindano ya kasi ya kubadilishana yalifanyika mwaka 1981?
Machi