Tangram () is a dissection puzzle. It consists of seven pieces, called tans, which fit together to form a shape of some sort. The objective is to form a specific shape with seven pieces. The shape has to contain all the pieces, which may not overlap.
The Tangram very possibly originated from the yanjitu (???) furniture set during the Song Dynasty. According to historical Chinese records, the furniture set was originally a set of 6 rectangular tables. Later, an additional triangular table was added to the set, and people can arrange the 7 tables into a big square table. There is some variation to such furniture set during the Ming Dynasty, and later became a set of wooden blocks for playing.According to other authors, the earliest reference to tangram appears in a Chinese book dated 1813, which was probably written during the reign of the Emperor Jiajing.Another legend states that a servant of a Chinese emperor was carrying a ceramic tile, extremely expensive and extremely