In 1909, the first production of puzzles with fastening parts was started in the USA. Later, at the end of the XIX century, the wooden base was replaced with cardboard.
Initially, the matching puzzles were not fastened together. And then in 1906, with the invention of jigsaws, the name 'jigsaw puzzle' appeared. The first puzzles were called 'dissection'. The first puzzle was created as a geographical teaching aid.
The children were asked to reassemble the map. It was a black-and-white geographical map of the world, pasted on a wooden base and sawn with a saw for inlay along the borders of states. At that time, the London engraver, cartographer and publisher John Spilsbury created the first puzzle similar to modern jigsaw puzzles. The story of the origin of jigsaw puzzles is very interesting and entertaining, and it goes back to 1766. Some of them, when we are speaking about the largest offline puzzles, have more than 51,000 pieces. The number of jigsaw puzzle pieces can be different. The rules of the game are quite simple: you need to put together often irregularly shaped interconnected puzzle pieces that have part of the image, to end up with a complete picture. Jigsaw puzzles online are very popular among adult people of different ages.