This is a very short introduction to the rules of game GO. object GO gain control territory. winner who ends up with most surrounded empty intersections.

1. GO is played on a square-ruled board with 19*19 intersecting lines. There is a white player with 180 stones and a black player owning 181 stones. White and black place their stones on empty intersections of the board.
2. A stone or a chain of stones - solidly connected stones -
   is captured and removed from the board,
   if there are no more liberties
   (orthogonal adjacent free intersections - see pic.)
   
3. you must not kill yourself, i.e. you must not place a stone on a intersection with no liberties, unless the placing would create a liberty by killing one of the adjacent stones
4. you must not recapture a stone in the next move with the captured one
   (this is called a ko position)
   the pic. on the left shows this forbidden endless cycle
   
5. Any player may pass at any time. Two consecutive passes or resign of one player ends the game
6. at the end of the game all stones that cannot avoid capture
   - do not live - are removed as prisoners.
   All empty surrounded points minus the captured stones give the players score.
   The higher score wins. The picture to the left shows a living white corner group.
   Because of rule 3 black cannot capture