The first fractional go game has concluded. It was a lot of fun, we fixed some rules issues (regarding suicide and superko), and now I am very happy with the rules. Is there interest to play another game? I’m thinking of a slightly different setup with simultaneous moves, and two teams with N players, each with one team colour and one colour shared with a player of the opposing team. Collisions could be handled by a priority list or by placing a stone of the combined colours.
We play on a 19x19 board, where all players place stones of two colours. Each round players submit their move fomulated in an unambiguous way (i.e. “D4”) via private message to the arbiter (martin3141). Rounds last 48 hours, and after the deadline the arbiter places all stones simultaneously and presents the new board position in the public thread. Players will be allowed to discuss the position and their strategy only in the public thread.
Fractional Capture Rule and Collision
Chains of a colour are determined in the same way as in “normal” go, however stones can be part of multiple chains (one for each of the stones colours).
At the end of a round, if two or more players submitted the same move, a stone is placed of all of these players colours combined.
After the arbiter placed all stones, all chains that do not contain a recently placed stone and have no liberties are removed simultaneously. Then all chains that contain a recently placed stone and have no liberties are removed simultaneously. Note that the first step may free up liberties. Also “suicide moves” are allowed.
Teams and Objectives
Players will be grouped into two teams of equal size, each team being associated with a team colour. Each player places stones of their team colour, the second colour being shared by a player on the opposing team.
The game ends when one team resigns with unanimous agreement or when the board position repeats itself (for example due to all players passing). In the latter case we proceed to counting (unless all players agree to keep playing).
Teams receive points for all stones of their team colour, as well as their territories. A maximal connected set of empty intersections is called a territory of a colour if all adjacent stones feature this colour. All intersections in a territory count as one point.
If both teams have the same number of points, the game ends in a tie. Otherwise the team with more points wins.
In the event that a player prematurely drops out and no substitute player can be found, a teammate may take over for this player, however they must submit the move in the public thread for everybody to see, at least 24h before the deadline, and they cannot change the submission afterwards. This is to counteract the information advantage they would otherwise have.