The jigsaw puzzle with the most pieces contains 551,232 pieces. On 24 September 2011, it was completed with an overall measurement of 14.85 x 23.20m (48ft 8.64 in x 76ft 1.38 in) by 1,600 students of the University of Economics of Ho Chi Minh City (Vietnam), at the Phu Tho Stadium in Ho Chi Minh City, Vietnam. This puzzle portrayed a lotus flower with six petals in symbolic representation of the six areas of knowledge predicted by the mind map study method. Students took 17 hours to break up the 3,312 parts, each involving 176 pieces, into which the puzzle has divided, and then re-assemble them to create a puzzle.