This is important, because for every stone captured a point is subtracted from that player's total amount of territory. Once a stone is captured, it becomes a prisoner. To capture a stone, or a group of stones, one must completely cut off all of its liberties (in other words, the stone is surrounded on all four sides). We can see that grouping stones is a good way to increase liberties.Ĭapturing Prisoners Image showing the capturing of a group of stones in a game of Go So two adjacent stones, in the middle of the board can have at most 6 liberties (three for each stone, since the fourth liberty is occupied by the other stone in the group). When a group is formed, its liberties are now the sum of free intersections adjacent to any single stone composing the group itself. When two or more stones, of the same colour, are placed on adjacent intersections (remember, not diagonally) they form a group. It's also true that placing a stone of the same colour on an adjacent intersection reduces the liberties of the first stone by one, but they form a group, so their individual liberties aren't as valuable as before. Whenever an enemy stone occupies one of these intersections, the original stone loses one liberty (since the intersection isn't free anymore). So a lone stone in the middle of the board has four liberties (intersections placed diagonally to each other aren't connected), while a lone stone on the side of the goban has only three liberties and one placed in a corner has two. To count how many liberties a stone has you have to simply count how many free intersections, surrounding that stone, aren't occupied by other stones. One very important concept in the game of Go is the concept of liberties, or free intersections surrounding a stone. Basic Rules Liberties The white and black squares show liberties.
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