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How much would go change if diagonal stones were adjacent?

Posted: Sat Aug 17, 2013 2:06 pm
by gour
How much would go change if diagonal stones were considered adjacent?

Re: How much would go change if diagonal stones were adjacte

Posted: Sat Aug 17, 2013 2:30 pm
by DrStraw
It would be just about impossible as every stone not on the edge would have eight liberties.

Re: How much would go change if diagonal stones were adjacte

Posted: Sat Aug 17, 2013 2:42 pm
by Bantari
DrStraw wrote:It would be just about impossible as every stone not on the edge would have eight liberties.

I don't think this would be much of an issue - it would be just harder to kill stones so you capture less on average during the game.

Instead, the considerations here would be:
1. How would a KO look like? and
2. You would have to spend a few more moves to secure areas (so securing areas would get harder).
3. Same (#2) also goes for eyes of living groups - which would affect some/many joseki (obviously) and invasions (which would get harder, I think - but this might balance with securing areas being harder.)

But all in all, I still think we would recognize the game for what it is.

However, once somebody tries it, a whole bunch of other issues might pop up... I never did so I am not sure what else can happen. Play a game like that and find out. ;)

3D Go would be much more tricky, I fear.

Re: How much would go change if diagonal stones were adjacte

Posted: Sat Aug 17, 2013 2:55 pm
by MJK
Is 'adjactent' an English word? Unfindable in any of my dictionaries.

Re: How much would go change if diagonal stones were adjacte

Posted: Sat Aug 17, 2013 2:59 pm
by DrStraw
MJK wrote:Is 'adjactent' an English word? Unfindable in any of my dictionaries.


Didn't even notice that - I just read it as adjacent.

Re: How much would go change if diagonal stones were adjacte

Posted: Sat Aug 17, 2013 3:21 pm
by Mef
Bantari wrote:
DrStraw wrote:It would be just about impossible as every stone not on the edge would have eight liberties.

I don't think this would be much of an issue - it would be just harder to kill stones so you capture less on average during the game.

Instead, the considerations here would be:
1. How would a KO look like? and
2. You would have to spend a few more moves to secure areas (so securing areas would get harder).
3. Same (#2) also goes for eyes of living groups - which would affect some/many joseki (obviously) and invasions (which would get harder, I think - but this might balance with securing areas being harder.)

But all in all, I still think we would recognize the game for what it is.

However, once somebody tries it, a whole bunch of other issues might pop up... I never did so I am not sure what else can happen. Play a game like that and find out. ;)

3D Go would be much more tricky, I fear.


Effectively no more ladders, and there is no longer such a thing as a cross cut... the concept of a hane is lost too, as it is now just another stretch (albeit a strange one).

Re: How much would go change if diagonal stones were adjacte

Posted: Sat Aug 17, 2013 6:32 pm
by Joaz Banbeck
Bantari wrote:...[what]...would a KO look like?...


To the best of my calculations, a ko no longer exists. :sad:

Re: How much would go change if diagonal stones were adjacte

Posted: Sat Aug 17, 2013 8:11 pm
by ez4u
Capturing a single stone would be like this presumably.
Click Here To Show Diagram Code
[go]$$B No more ko
$$ +------------
$$ | . . . . . .
$$ | . X X 1 . .
$$ | . X O X . .
$$ | . X X X . .
$$ | . . . . . .
$$ | . . . . . .[/go]

Re: How much would go change if diagonal stones were adjacte

Posted: Sat Aug 17, 2013 9:01 pm
by Joaz Banbeck
I think seki will happen a lot more often.

Re: How much would go change if diagonal stones were adjacte

Posted: Sat Aug 17, 2013 10:14 pm
by Boidhre
Joaz Banbeck wrote:I think seki will happen a lot more often.


More problematically, no more false eyes. There goes 95% of the sub 15k tsumego.

Re: How much would go change if diagonal stones were adjacte

Posted: Sun Aug 18, 2013 2:34 am
by Mef
Joaz Banbeck wrote:
Bantari wrote:...[what]...would a KO look like?...


To the best of my calculations, a ko no longer exists. :sad:



Indeed, any stone causing a capture would need to be connected to at least one other stone of the same color...so ko goes out the window pretty quickly.

Re: How much would go change if diagonal stones were adjacte

Posted: Sun Aug 18, 2013 7:07 am
by Joaz Banbeck
Boidhre wrote:...no more false eyes. There goes 95% of the sub 15k tsumego.


There should be more false eyes. The problems just change.

Click Here To Show Diagram Code
[go]$$W No more easy eyes
$$ +------------
$$ | . . . . . .
$$ | . X X X . .
$$ | . X O X . .
$$ | . X X 1 . .
$$ | . . . . . .
$$ | . . . . . .[/go]


EDIT: in the center of the board, an eye is now 16 times harder to make. On the side, it is 4 times harder. In the corner, twice.

Re: How much would go change if diagonal stones were adjacte

Posted: Sun Aug 18, 2013 7:10 am
by Boidhre
Joaz Banbeck wrote:
Boidhre wrote:...no more false eyes. There goes 95% of the sub 15k tsumego.


There should be more false eyes. The problems just change.

Click Here To Show Diagram Code
[go]$$W No more easy eyes
$$ +------------
$$ | . . . . . .
$$ | . X X X . .
$$ | . X O X . .
$$ | . X X 1 . .
$$ | . . . . . .
$$ | . . . . . .[/go]


That's not a false eye. Well, not under the usual definitions I've seen for them.

I mean your diagram is analagous to this no?

Click Here To Show Diagram Code
[go]$$B
$$ . . . . |
$$ . . . . |
$$ . . O . |
$$ . X O X |
$$ . X X X |
$$ , . . . |
$$ . . . . |
$$ . . . . |
$$ . . . . |
$$ --------+[/go]

Re: How much would go change if diagonal stones were adjacte

Posted: Sun Aug 18, 2013 7:12 am
by hyperpape
Joaz Banbeck wrote:I think seki will happen a lot more often.
In fact, I would assume that in a game between competent players, the majority of the board would end up as a seki. Possibly the entire board.

Re: How much would go change if diagonal stones were adjacte

Posted: Sun Aug 18, 2013 7:35 am
by Joaz Banbeck
hyperpape wrote:
Joaz Banbeck wrote:I think seki will happen a lot more often.
In fact, I would assume that in a game between competent players, the majority of the board would end up as a seki. Possibly the entire board.


I think that is probably true. Invasions are easy, so eyes are nearly impossible.
I tried a short game, playing both sides. The first player cannot make an eye with a 3-3 play because invasions are so easily connected out.

Actually, I would rephrase that as "... a game between competent aggressive players, the majority of the board would end up as a seki." It is possible that both sides would concentrate on their respective eyes first, then try to connect everything on the board to them.