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Three Colour Go
Posted: Wed Jul 21, 2010 5:31 am
by ahd
We play this while waiting for tournament rounds to finish in Brisbane, sometimes. Also to mess with the strong players' heads.
- The weakest player gets black, the strongest player gets white, the other player gets blue.
- The player who fills in the last liberty of a group captures the group.
- Ko, seki, and suicide rules apply as normal (Australia uses Japanese rules for tournament play).
- The games ends after three passes in a row.
- Scoring is quasi-Japanese: one point for each captured stone plus one point per enclosed intersection of territory plus komi.
- Handicap stones...no. Just...no.
In principle this can be extended to N players; there has been one four-colour game in Brisbane to my knowledge (black, purple, blue, white), and all of the participants are still nominally sane.
Extension to three-colour zen go and three-colour pair go is left as an exercise for the reader.
Re: Three Colour Go
Posted: Wed Jul 21, 2010 5:59 am
by RobertJasiek
http://home.snafu.de/jasiek/multigo.htmlIn practice, multi-player go is a negotiation game.
Re: Three Colour Go
Posted: Wed Jul 21, 2010 6:22 am
by topazg
RobertJasiek wrote:http://home.snafu.de/jasiek/multigo.html
In practice, multi-player go is a negotiation game.
Have you played much of it Robert? In my experience, it generally ends up with very little co-operation between players ..
Re: Three Colour Go
Posted: Wed Jul 21, 2010 6:33 am
by Phelan
What I played usually ends up as "gang up on the leader", so I agree with Robert on the negotiation part.
I think I've seen some rules that integrated making and breaking alliances and shared wins in order to regulate that part of the game.
Edit: found them.
http://homepages.di.fc.ul.pt/~jpn/gv/players.htm
Re: Three Colour Go
Posted: Wed Jul 21, 2010 6:44 am
by topazg
Phelan wrote:What I played usually ends up as "gang up on the leader", so I agree with Robert on the negotiation part.
I think I've seen some rules that integrated making and breaking alliances and shared wins in order to regulate that part of the game.
Edit: found them.
http://homepages.di.fc.ul.pt/~jpn/gv/players.htm
Thanks for this, nice link. I agree also, it ends up with ganging up on the leader, but I wouldn't have described that as negotiation

I suppose it is closer to co-operation though, so I think I chose a poor word, but I haven't encountered many "alliances" without rules to enable shared victories.
I certainly think area scoring works better with multi-player go as well.
Re: Three Colour Go
Posted: Wed Jul 21, 2010 7:14 am
by fwiffo
It seems that by using Japanese scoring that there would be races to capture dead stones which wouldn't get captured in regular Go. In normal go, you'd never waste moves to capture dead stones unless necessary. In some cases it would even create a new kind of three-color seki.
$$B
$$ --------------
$$| S S . X . X .
$$| S S X X X X .
$$| . O X . X . .
$$| O O O X X . .
$$| . O . O . . .
$$| O O O O . . .
$$| . . . . . . .
- Click Here To Show Diagram Code
[go]$$B
$$ --------------
$$| S S . X . X .
$$| S S X X X X .
$$| . O X . X . .
$$| O O O X X . .
$$| . O . O . . .
$$| O O O O . . .
$$| . . . . . . .[/go]
Neither black nor white can atari the four red stones in the corner, because it would allow the other to capture them and get the four points for prisoners. So would the red stones be alive? Also, red could play in one of the liberties to give the free points to the player to his left as a trade for some helpful play elsewhere on the board... Is table-talk permitted?
$$B
$$ --------------
$$| . S X . X . .
$$| S S X X X . .
$$| . O X . X . .
$$| O O O X X . .
$$| . O . O . . .
$$| O O O O . . .
$$| . . . . . . .
- Click Here To Show Diagram Code
[go]$$B
$$ --------------
$$| . S X . X . .
$$| S S X X X . .
$$| . O X . X . .
$$| O O O X X . .
$$| . O . O . . .
$$| O O O O . . .
$$| . . . . . . .[/go]
And what about this? Black has no shared liberties with the stones in question and doesn't even have a legal move to atari them. But white still can't capture them.
And if suicide were permitted, could you self-capture your own dead stones for points? If area scoring were used, the stones would be just dead as normal. Maybe prisoners should count as negative points for the captured player instead of points for the capturing player. That would make area and territory scoring consistent.
Re: Three Colour Go
Posted: Wed Jul 21, 2010 7:16 am
by topazg
Good post fwiffo. You are highlighting some of the reasons I much prefer area scoring for greater than 2 person Go

Re: Three Colour Go
Posted: Wed Jul 21, 2010 7:53 am
by wms
I've played one or two games of multi-colored go. And that was enough to know that I never, ever, wanted to play it again. I found it to be a painfully annoying game, where any plan a player has that might succeed is easily thwarted when the other players gang up, and your only hope of scoring significant points is for the other players to play chicken with each other, hoping somebody *else* will waste a move on ruining your plans. Yuck.
The closest thing to multi-colored go that is an enjoyable game IMHO is
Through the Desert. It has no capturing, but scoring territory is important, and it uses a clever way of limiting where people can play that makes it harder for everybody to gang up on the perceived leader.
Re: Three Colour Go
Posted: Thu Jul 22, 2010 4:43 am
by ahd
fwiffo wrote:It seems that by using Japanese scoring that there would be races to capture dead stones which wouldn't get captured in regular Go. In normal go, you'd never waste moves to capture dead stones unless necessary. In some cases it would even create a new kind of three-color seki.
In Australia, the Melbourne players believe it doesn't, and the Brisbane players believe it does. We call it moral seki.
Re: Three Colour Go
Posted: Thu Jul 22, 2010 4:53 am
by Harleqin
Prisoners always count as minus for their colour.
Re: Three Colour Go
Posted: Thu Jul 22, 2010 9:30 am
by Magicwand
3 color go is impossible to play.
how about changing the board and grid shape into pentagon, hexagon, octagon etc?
that might be intresting..just a thought.
Re: Three Colour Go
Posted: Thu Jul 22, 2010 10:07 am
by Marcus
Magicwand wrote:3 color go is impossible to play.
how about changing the board and grid shape into pentagon, hexagon, octagon etc?
that might be intresting..just a thought.
I like this idea ... but that could be a lot of liberties on a single stone.
Hmmm, I need to think about this a bit more ...
Re: Three Colour Go
Posted: Thu Jul 22, 2010 10:26 am
by prokofiev
Marcus wrote:Magicwand wrote:3 color go is impossible to play.
how about changing the board and grid shape into pentagon, hexagon, octagon etc?
that might be intresting..just a thought.
I like this idea ... but that could be a lot of liberties on a single stone.
Hmmm, I need to think about this a bit more ...
You need not increase liberties. Changing the shape of the "squares" and changing the number of liberties (edges) at each point may be done independently.
For example, see the first two big pictures on this site (which I randomly pulled off google):
http://aleph0.clarku.edu/~djoyce/poincare/poincare.htmlThe first has pentagonal regions but still only four liberties per stone. The second keeps square regions but has five liberties per stone. (The boundary of the board would necessarily be wonky though.)
Re: Three Colour Go
Posted: Thu Jul 22, 2010 10:27 am
by Marcus
prokofiev wrote:Marcus wrote:Magicwand wrote:3 color go is impossible to play.
how about changing the board and grid shape into pentagon, hexagon, octagon etc?
that might be intresting..just a thought.
I like this idea ... but that could be a lot of liberties on a single stone.
Hmmm, I need to think about this a bit more ...
You need not increase liberties. Changing the shape of the "squares" and changing the number of liberties (edges) at each point may be done independently.
For example, see the first two big pictures on this site (which I randomly pulled off google):
http://aleph0.clarku.edu/~djoyce/poincare/poincare.htmlThe first has pentagonal regions but still only four liberties per stone. The second keeps square regions but has five liberties per stone. (The boundary of the board would necessarily be wonky though.)
I was thinking simpler (and therefore more liberties). It's an interesting idea either way.
Re: Three Colour Go
Posted: Thu Jul 22, 2010 10:28 am
by fwiffo
A regular hexogonal grid would only have three liberties per stone.
