Surround the largest area(s) of the 9 by 9 board with your stones to win
Go is an abstract strategy board game for two players in which the aim is to surround more territory that the opponent. The game was invented in China more than 2,500 years ago and is believed to be the oldest board game continuously played to present day. The game is typically played on 3 size boards (9x9 - beginner, 13x13 - intermediate, 19x19 - expert).
The rules for 9x9 Go are identical to 19x19 Go, with the obvious exception of the board size being of 9x9 (81 intersections to play on) as opposed to 19x19 (361 intersections to play on).