special award and won similar awards for best toy in the UK, France, and the US. By 1981, Rubik's Cube had become a craze, and it is estimated that in the period from 1980 to 1983 around 200 million Rubik's Cubes were sold worldwide. In March 1981, a speedcubing championship organised by the Guinness Book of World Records was held in Munich, and a Rubik's Cube was depicted on the front cover of Scientific American that same month. In June 1981, The Washington Post reported that Rubik's Cube is "a puzzle that's moving like fast food right now ... this year's Hoola Hoop or Bongo Board", and by September 1981, New Scientist noted that the cube had "captivated the attention of children of ages from 7 to 70 all over the world this summer." As most people could solve only one or two sides, numerous books were published including David Singmaster's Notes on Rubik's "Magic Cube" (1980) and Patrick Bossert's You Can Do the Cube (1981). At one stage in 1981, three of the top ten best selling books in the US were books on solving Rubik's Cube, and the best-selling book of 1981 was James G. Nourse's The Simple Solution to Rubik's Cube which sold over 6 million copies. In 1981, the Museum of Modern Art in New York exhibited a Rubik's Cube, and at the 1982 World's Fair in Knoxville, Tennessee a six-foot Cube was put on display. ABC Television even developed a cartoon show called Rubik, the Amazing Cube. In June 1982, the First Rubik's Cube World Championship took place in Budapest and would become the only competition recognized as official until the championship was revived in 2003. In October 1982, The New York Times reported that sales had fallen and that "the craze has died", and by 1983 it was clear that sales had plummeted. However, in some countries such as China and the USSR, the craze had started later and demand was still high because of a shortage of Cubes. 21st-century revival Rubik's Cubes continued to be marketed and sold throughout the 1980s and 1990s, but it was not until the early 2000s that interest in the Cube began increasing again. In the US, sales doubled between 2001 and 2003, and The Boston Globe remarked that it was "becoming cool to own a Cube again". The 2003 World Rubik's Games Championship was the first speedcubing