The goal is to capture 3 (or more) opponent stones. Game ends when a first player has captured 3 or more stones. A repetition of an exact previous position is forbidden. Other rules are similar to Capture Go.
Living group is an important concept in go. Living group is safe against any play by the opponent. At the end of the game, all group should be able to defend themselves.
Connecting stones is important skill both in capture go and go. Keeping stones connected helps keep stones safe. If the opponent can cut stones into separate groups, it is more difficult to protect both groups.
The game starts from an empty board, and black plays the first stone. The goal is to surround empty territory and capture opponents stones. Game ends when both players pass. Stones can be captured in the same way as in capture-go. Repetition of same board position is forbidden similarly to capture 3 game.
The player can capture a stone by playing into its last liberty. In the diagram a white stone A is captured when black plays to B. Liberties are empty intersection connected to a stone by line.