Yesterday I met a friend for teaching him how to play Go (囲碁 or 碁 in Japanese). It is a two-player strategic board game, originating in China thousands of years ago, and very popular in East ASia.
The is played in a 18x18 cell board, but unlike more “occidental” games like chess or draughts, the “stones” (game pieces) are placed in the intersections of the board lines, so there’s 19x19 posible points.

My Go board
The rules are very simple, and the basics of the game can be learnt in less than 15-30 minutes. The strategic complexity and game posibilities are, however, great, and it is said that you’ll never play two times the same game.
The game consists of placing your stones in the board, seeking to surround the biggest amount of territory possible. Once placed in the board, the stones stay at the same point and could not be moved for the rest of the game, unless they are captured.

Beginning of a game
The opponent stones can be captured by surrounding all the points around them. The stones so captured are removed from the board, and kept appart for the final point count. It is also possible to capture groups of stones, surrounding them with your own.

How to capture stones
One basic concept of Go are the “eyes”. One eye is a free point inside one of your groups. It is said that a group is “alive” if it has at least two eyes, making it impossible to be captured because the opponent could never completely surround it.

White group has two “eyes”, it can not be captured
The game ends when both players agree that there’s no more free territory to battle for. Then they count the free points controlled by each player. Each captured stone worths one point, that is substracted from the opponent points. The player with more points, wins the game.

White controls most of the board
That’s all, this post was just a short introduction to this wonderful game, unfortunately almost unknown in the West. For more information about it you could visit the following links:
Wikipedia: Go.
The Interactive Way to Go.
How To Play Go.