Most pieces in a jigsaw puzzle

The jigsaw puzzle with the most pieces consisted of 551,232 pieces and was completed with an overall measurement of 14.85 x 23.20 m (48 ft 8.64 in x 76 ft 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, on 24 September 2011.

The jigsaw puzzle depicted a lotus flower with six petals in symbolic representation of the six areas of knowledge envisaged by the Mindmap study method. It took the students 17 hours to first break up the 3,132 sections, each containing 176 pieces, into which the jigsaw puzzle had been divided, and then re-assemble them to create the puzzle.