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Jigsaw puzzle keeps brain alert. It helps in sharpening memory. The first jigsaw puzzle was manufactured by John Spilsbury in the year 1766. It was in a form of map and subsequently used as educational device in class rooms to teach Geography. It is also an economical and reusable enjoyment. Spilsbury turned jigsaw puzzle to business. It was in middle of 18th century

Over the period of time the maps in the puzzle added new dimension by establishing natural scenes, buildings, monuments, castles, animals, birds, etc. Earlier jigsaw puzzle was made of wood and later on replaced by cardboards which were easier and cheaper.. After the introduction of cardboard, photos and prints were pasted in the cardboard and designed to shape.Jigsaw puzzle has many shapes.It varies from 300 pieces to 1000 pieces. However the largest jigsaw puzzle in the world has 24,000 pieces and measures 428 x 157 cms. A few puzzles are also made on both the sides, so that, the puzzle can be solved on both the sides with different pictures.{Few puzzles are made on both sides.It has different pictures. It is a bit complicated. Jigsaw puzzles are also available in spherical shape, which are 2 dimensional, with shapes like Moon, Earth, etc.

With the development in technology we have PC versions of jigsaw puzzle. Computer puzzle came late. Earlier there was Tiling puzzle. Mechanical puzzle was also used. These were done physically. In computers you see the puzzle in screen. You play with mouse Special software's are obtainable for the puzzles. This software's allows puzzle enthusiasts to continue to enjoy the challenge of arranging the scrambled pictures without the need for physically constructing.

On the online version of jigsaw puzzle you have wide ranging types of puzzle and to download them you should have different types of software like Java, Flash, Shockwave, etc. There are thousands of jigsaw puzzle online. They are freely available Advantage of the online version is, you can create your own puzzle, also, and place them in your web site or share them with friends. On a paid online site you have superior variety of jigsaw puzzle where you have to become a member.Paid membership is available. You find advanced puzzles. There are online puzzles which may take hours to complete. It varies in pieces. It is difficult With good and acceptable software you can create any image you want and create a jigsaw puzzle that uses very smooth and fast computer graphics. Mobile phones have jigsaw puzzles. You have to adjust the pieces to a normal conclusion. If you have a GPRS facility in your mobile you can download games or use the custom made puzzles. Online versions also have such puzzles which confine the move to assured number of steps and you have to solve within the predetermined steps. Here is an example. 5 x 5 puzzle have 25 steps/moves

Free jigsaw puzzles are abundantly available in the internet. Jigsaw puzzles are just like knowledge management which are complicated.|Jigsaw puzzle is complicated. Knowledge is also complicated} There are so many disparate pieces that we are not even sure what they are sometimes. All pieces fall together sometimes. It gives a good result.