A jigsaw puzzle requires proper assembly of interlocked cut-out pieces resulting in the formation of a figure or picture. British mapmaker John Spilsbury invented the jigsaw puzzle in 1760. It was intended to be an educational toy. Puzzle maps are used even now to teach geography to children.
Puzzles were considered high-society entertainment, but technological advances brought down the prices. Early jigsaw puzzles were of the very simple non-interlocking variety also called push-fit puzzles. Jigsaw puzzles became very popular in early twentieth century, and their popularity was further boosted with the invention of interlocking pieces. During the Great Depression, jigsaw puzzles became a very popular form of family entertainment when drugstores and libraries started renting them out. Antique wooden and cardboard puzzles are considered collectibles, and completed puzzles are rated even higher. Wooden jigsaw puzzles are considered the best jigsaw puzzles. These puzzles are handcrafted using mechanical scroll saws.
Jigsaw puzzles are typically available in 500-piece, 750-piece, and 1,000-piece sizes. Double-sided jigsaw puzzles that can be solved from either side and three-dimensional jigsaw puzzles are also available. Jigsaw puzzles are also differentiated by the method of cutting pieces. Some common methods of separation are completely blocked with a form of shares in the same way and locked spaces unique, completely blocked with fully exchangeable and non-blocked pages. Puzzle, the pieces are mixed with fully blocked considered harder to solve. Puzzle Modern cardboard, glued with a picture or graphic. Cardboardthen punch-cut into pieces with the help of metal dies. Castles and mountains are two of the popular images found on jigsaw puzzles.
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