Gomoku
Gomoku, also called "Five in a Row", is an abstract strategy board game. It is traditionally played with Go pieces (black and white stones) on a Go board, using 15×15 of the 19×19 grid intersections. Because pieces are not moved or removed from the board, Gomoku may also be played as a paper-and-pencil game. The game is known in several countries under different names.
History of Go
The board was found in the ruins of a watchtower at the tombs of Emperor Jingdi and Empress Wang Zhi of the Western Han Dynasty. The broken fragment of the board measures 5.7 cm to 28.5 cm long, 17 cm to 19.7 cm wide and 3.6 cm thick.