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Friday, 18 September 2015

Jigsaw puzzle

Jigsaw puzzles were invented by the English mapmaker and geographer John Spilsbury in 1760. He used a marquetry saw to produce maps of the British Empire cut in pieces.

Early jigsaws were known as dissections. They were produced by mounting maps on sheets of hardwood and cutting along national boundaries, creating a puzzle useful for the teaching of geography. Such puzzles were used to teach the children of King George III and Queen Charlotte by royal governess Lady Charlotte Finch.

The world's largest jigsaw puzzle in size measured 5,428.8 m² (58,435.1 ft²) and consisted of 21,600 pieces. According to the Guinness Book of Records, it was devised by Great East Asia Surveyors & Consultants Co. Ltd it was assembled by 777 people at the former Kai Tak airport, Hong Kong on November 3, 2002. Each piece measured a maximum 0.5 x 0.5 m.

The world record for the largest-sized jigsaw (most pieces) puzzle comprised 551,232 pieces. It was compiled by 1,600 students at the University of Economics of Ho Chi Minh City in Vietnam in 2011.

The world's largest commercially available jigsaw puzzle was released by German company Ravensburger in September 2010. It shows 32 works by American artist Keith Haring and has 32,256 pieces, measuring 544 cm by 192 cm when assembled.

English craftsman Dave Evans spent weeks making a hand-cut 40,000-piece jigsaw puzzle for a world record attempt, using photographs of the Queen's diamond jubilee. Just a day after adding the final piece in April 2013, it collapsed on the floor of his workshop in Weymouth.

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