Kee Rules of Go
KEE RULES OF GO
Homepage: http://www.geocities.com/kee_rules/kee_rules_of_go.html
PRINCIPLES
1. Game shall be applicable to any number of players (even 3 or more).
2. Game shall end with a score on all types of boards.
3. Game shall end in finite plays on all types of finite boards.
4. Game shall end with consecutive passes of all players.
5. Game shall not end if untried play on scoring position is prohibited due to ko ban.
CONTENTS
A. General
1. Players play alternately.
2. A play of a player is either:
(a) to place one of his/her stones on the board position to play; or
(b) to pass.
3. After a stone is placed in a play by a player:
(a) All his/her opponent stones without liberty (if any) would first be removed simultaneously.
(b) All his/her own stones without liberty (if any) would then be removed.
(c) The resulting board position becomes the board position to play by his/her next player.
B. Kee Specific
4. The situation to play is defined as the combination of the board position to play and the last board position consecutively passed by all opponents of the player to play. Before all plays:
(a) The board position to play is typically an empty board.
(b) By definition, there is no board position consecutively passed by all opponents of the player to play.
5. A player may not place a stone to produce a situation to play which has ever appeared before in the game for his/her next player.
6. Game ends if all players consecutively pass the same situation to play.
Published by Wilton Kee on 5-Mar-2007.
Dedicated to Wing Yu.
VALIDITY TESTS
Kee Rules have been tested against:
A. Simple ko on a fully occupied board
Desired result: The player who can have further action after winning the ko shall win the game, but he/she shall still lose the game in front of cooperative opponents.
1. Simple ko between 2 players in a 2-player game.
while the 3rd player is occupying somewhere else.
It is not difficult to see that the logic of test case 1 still follows with intervention of passes of the third player.
3. Simple ko between 3 players in a 3-player game while the 3rd player is trying to help the weaker ko-player.
The 3rd player (say Red) may be willing to help the weak White because Red may just lead Black by 20 points elsewhere.
Under both anchors (White-captured or Red-captured), Black has tried to capture back but unsuccessful. Black can never capture the white stones and win.
B. Sending two returning one in a bent-5-corner of a fully occupied board
Desired result: The player who sends two and returns one to prolong the game shall not get the corner.