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Kee Rules of Go
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KEE RULES OF GO v6.0

(A ruleset with the most liberal superko rule)

[ext] http://www.geocities.com/kee_rules/kee_rules_of_go.html


A. Placing Stones

1. Each player has unlimited stones in one unique color.

Conventionally, there are two players, playing with black and white stones.

2. Players play alternately by either placing a stone in her color on an empty intersection on the board, or passing.

Conventionally, the player with black stones plays first.

B. Removing Captive Groups

1. Each set of adjacent stones in the same color forms a group.

2. A group is captive if it is not adjacent to any empty intersection.

3. A group is pre-captive if it is adjacent to only one empty intersection.

4. After a player placed a stone, all captive opponent groups are immediately removed from the board. If her groups are still captive after the removal, they are also removed from the board.

C. Prohibited play

1. A board situation is regarding how stones are placed on the board and which player to play next after the removal of captive groups .

2. When a player passes, one pass count of her is added to each board situation ever produced.

3. A player may not place a stone to form a pre-captive group and repeat a board situation with her pass counts not more than any of those of her opponents.

D. Termination

1. If all players consecutively pass, the board situation is added to the ending history.

2. A game ends when:

(a) All players agree to which stones to be removed in scoring for a board situation in the ending history.

(b) All participating players consecutively pass the board situation which already exists in the ending history.

3. If there is no agreement, no stones are to be removed in scoring.

E. Scoring

1. In the final board position:

(a) Stones are removed from the board according to the agreement of all players, if applicable.

(b) Each set of adjacent unoccupied intersections forms a zone.

(c) A player gets one point from her stone on the board.

(d) A player also gets one point from each intersection of zones which are adjacent only to her stones.

2. A player is ranked higher if she gets more points.

Written by Wing Tao Wilton Kee on 30-Aug-2004.


KEY FEATURES

The key difference of Kee Rules v6.0 from traditional rulesets is Rule C.3. It prohibits minimal types of plays. I would like to hear your comment about it. Are there any loopholes within such liberal version of superko?

Let me re-phrase in the following way for your easy reference:

Kee's superko rule

A stone placement is prohibited if:

(a) the resulting board situation repeats;

(b) in the resulting board situation the stone forms a group with one and only one liberty; and

(c) since last occurrence of the resulting board situation, the player has not passed more than any opponents.

Normal superko rule only has (a). Both (b) and (c) are unique. (b) is there to avoid only disturbing plays. (c) is there to penalize only disturbing players.


Discussions

Wilton Kee:

You may find the previous versions of Kee Rules below.

Kee Rules of Go v3.0 : Multi-board scoring and ending determination by game situation

Kee Rules of Go v4.0 : Discriminating Situational Super Ko (DSSK)

Kee Rules of Go v5.0 : Controlling players' participation. Absence of prohibited moves becomes possible. (Only discussion available)

For your information, they are completely different rulesets and should be regarded as independent from v6.0.


I have tried Kee Rules v6.0 for several small boards and the best first plays with their corresponding results are listed below. I only worked it out by my hands, so please point it out if there is any mistakes:

1x1: Pass (draw)

1x2: Pass (draw)

1x3: 1-2 (+3)

1x4: 1-2 (+4)

1x5: Pass, 1-1, 1-2, 1-3 (draw)

1x6: 1-2 (+1)

1x7: 1-2 (+2)

1x8: 1-2 (+3)

1x9: Pass, 1-2, 1-4 (draw)

2x2: 1-1, Pass (draw)

2x3: 1-2, Pass (draw)

2x4: 1-2 (+8)

2x5: 1-3 (+10)

3x3: 2-2 (+9)

3x4: 2-2 (+4)

3x5: 2-3 (+15)

4x4: 2-2 (+2)

4x5: 2-3 (+20)

5x5: 3-3 (+25)


Just feel free to add your comments about Kee Rules v6.0 below.

Robert Pauli: Me again :-)

 Conventionally, there are two players
 playing with black and white stones.
  • Comma after "players" is missing (it's not: N players, with only two of them doing black and white).
 Written by Wing Tao Wilton Kee
  • "and" missing?

Wilton Kee:

Thank you for your support.

  • Comma has been added.
  • "Wing Tao Wilton Kee" is my full name.

Robert Pauli: Wow, that's a great name, I'd say.



This is a copy of the living page "Kee Rules of Go" at Sensei's Library.
(OC) 2004 the Authors, published under the OpenContent License V1.0.