Full-screen recommended (It can be hard to click the right spots outside of fullscreen.) Instructions (This has been modified according to @Camodragg 's advice): 2 players take turns clicking on the points of the board (where the black lines intersect) to place a piece of color black or white. The black player starts first. When a collection of adjacent friendly stones is completely surrounded by the opponent's stones*, those stones are removed from the board. You can skip your move by passing a turn (By clicking on the black background or the border of the board). The game ends if both of you pass a turn at that same time. Once the game ends, the simplest way of deciding who wins is by counting the number of friendly stones on the board plus the number of blank points which are fully surrounded by your stones. The white player also gets an additional bonus for going second, which is known as komi. It usually has a value of 6.5 to 7.5 stones, depending on the version of the game. You have to decide the komi value before playing the game. *What is meant by 'completely surrounding' here is that every stone in that collection of adjacent friendly stones has all 4 of its adjacent points occupied by a stone, whether a friendly piece or an enemy piece.
Thanks to @b9e for debugging and @Camodragg for explaining why some parts of this project initially weren't true to the real game of GO. A recreation of the classic game GO in 100 blocks for the challenge. This setup of GO uses a 19*19 board, which is the usual size for normal GO games. Also, the board has received a significant change to reflect the fact that in real GO, stones are actually placed at the intersection of the black lines, not in between them. Image of the GO board in the thumbnail is from here: https://commons.wikimedia.org/wiki/File:Go_board.jpg
