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 Post subject: Donut board
Post #1 Posted: Fri Jan 27, 2012 12:22 am 
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Click Here To Show Diagram Code
[go]$$c
$$ --------------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . - - - - - - - - - . . . . . . |
$$ | . . . . . . - - - - - - - - - . . . . . . |
$$ | . . . . . . - - - - - - - - - . . . . . . |
$$ | . . . . . . - - - - - - - - - . . . . . . |
$$ | . . . . . . - - - - - - - - - . . . . . . |
$$ | . . . . . . - - - - - - - - - . . . . . . |
$$ | . . . . . . - - - - - - - - - . . . . . . |
$$ | . . . . . . - - - - - - - - - . . . . . . |
$$ | . . . . . . - - - - - - - - - . . . . . . |
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$$ | . . . . . . . . . . . . . . . . . . . . . |
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$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ --------------------------------------------[/go]


Anybody interested in a game on this board? It has exactly one less space than a normal board. But 66% more edge :P We could play it on a server even if there's one that could do this. The convex corners have me curious, because unlike normal corners they have all 4 liberties.

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 Post subject: Re: Donut board
Post #2 Posted: Fri Jan 27, 2012 2:38 am 
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i ll be interested why not a malkovitch ?

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 Post subject: Re: Donut board
Post #3 Posted: Fri Jan 27, 2012 3:17 am 
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I've always wanted to do one of these!

I would totally be in.

EDIT:

Though, my initial analysis is that the battles will interact very little, this will basically be a series of local life and death problems. Pincering will almost always be the right move (and close pincers.)

An immediate pincer leads directly into a life and death struggle. BUT there IS something interesting, because of the special corners, it is actually rather difficult to kill things on the edge, if they can run along far enough, they will get free.

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 Post subject: Re: Donut board
Post #4 Posted: Fri Jan 27, 2012 3:49 am 
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shapenaji wrote:
I've always wanted to do one of these!

I would totally be in.

EDIT:

Though, my initial analysis is that the battles will interact very little, this will basically be a series of local life and death problems. Pincering will almost always be the right move (and close pincers.)

An immediate pincer leads directly into a life and death struggle. BUT there IS something interesting, because of the special corners, it is actually rather difficult to kill things on the edge, if they can run along far enough, they will get free.

i more or less thought the same thing but you could also try a moyo strategy. if you take the "internal" corners there is no escape so a runnning battle would be unplayable.
for example

Click Here To Show Diagram Code
[go]$$c hard to invade ?
$$ | . . . . . . - - - - - - - - - . . . . . . |
$$ | . . . . . . - - - - - - - - - . . . . . . |
$$ | . . . . . B . . . . . . . . . B . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ | . . . B . . . . . . B . . . . . . B . . . |
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ --------------------------------------------[/go]

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 Post subject: Re: Donut board
Post #5 Posted: Fri Jan 27, 2012 8:05 am 
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When I saw "donut board", I thought at first you meant a toroid, i.e. a board where the edges wrap around. That has been tried also a few times, it would make for an interesting malkovich :)

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 Post subject: Re: Donut board
Post #6 Posted: Fri Jan 27, 2012 10:46 am 
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I don't mind Malkovich, I just wasn't sure I could fine anyone interested given the time commitment (it's still about the same size as a proper board).

Sounds like both shapenaji and perceval are game for a malkovich? I can set up two threads. Do we want to try and figure out how a handicap would work? Or just leave it as even (I think even is fine).

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 Post subject: Re: Donut board
Post #7 Posted: Fri Jan 27, 2012 11:14 am 
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i think even is fine between us given that its an unkown setup; please start the thread and we' :rambo: ll see

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 Post subject: Re: Donut board
Post #8 Posted: Fri Jan 27, 2012 2:39 pm 
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Sure, I'll play one.

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 Post subject: Re: Donut board
Post #9 Posted: Mon Jan 30, 2012 5:56 pm 
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I'm interested if anyone else is. I can already tell from the other boards that my reading is screwy...

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 Post subject: Re: Donut board
Post #10 Posted: Mon Jan 30, 2012 9:27 pm 
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I'd volunteer but I have my hands full :)

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 Post subject: Re: Donut board
Post #11 Posted: Mon Jan 30, 2012 9:59 pm 
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I have a question about donut board strategy which I will, perhaps erroneously, hide.
How does black resist mirror go, considering komi?

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 Post subject: Re: Donut board
Post #12 Posted: Mon Jan 30, 2012 10:09 pm 
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Hiding seems like the right choice.

Loons wrote:
How does black resist mirror go, considering komi?
Ruh-roh! That's a good question. Not all of the usual tricks rely on tengen, do they?

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 Post subject: Re: Donut board
Post #13 Posted: Tue Jan 31, 2012 5:20 am 
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This seems like a tengen variation for this board:

Click Here To Show Diagram Code
[go]$$Bc1 Mirror breaking
$$ --------------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . O O O O O O O O O O 7 . . . . . |
$$ | . . . . O X X X X X X X X X X O 9 . . . . |
$$ | . . . . O X - - - - - - - - - O 5 . . . . |
$$ | . . . . O X - - - - - - - - - O 3 . . . . |
$$ | . . . . O X - - - - - - - - - O 1 . . . . |
$$ | . . . . O X - - - - - - - - - O X . . . . |
$$ | . . . . O X - - - - - - - - - O X . . . . |
$$ | . . . . O X - - - - - - - - - O X . . . . |
$$ | . . . . 2 X - - - - - - - - - O X . . . . |
$$ | . . . . 4 X - - - - - - - - - O X . . . . |
$$ | . . . . 6 X - - - - - - - - - O X . . . . |
$$ | . . . . . X O O O O O O O O O O X . . . . |
$$ | . . . . . 8 X X X X X X X X X X . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . . . |
$$ --------------------------------------------[/go]

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 Post subject: Re: Donut board
Post #14 Posted: Tue Jan 31, 2012 8:10 pm 
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Anyone figure out any go software that can handle this board? SmartGo and Drago both fail because they don't seem to let you make boards larger than 19x19. CGoban let's you make 21x21, but there's no way to set edges in the center, or have permanent markings on the board to show the border.

I hate trying to figure out variations with ascii diagrams.

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 Post subject: Re: Donut board
Post #15 Posted: Wed Feb 01, 2012 12:47 am 
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Numsgil wrote:
Anyone figure out any go software that can handle this board? SmartGo and Drago both fail because they don't seem to let you make boards larger than 19x19. CGoban let's you make 21x21, but there's no way to set edges in the center, or have permanent markings on the board to show the border.

I hate trying to figure out variations with ascii diagrams.


Maybe you can make a 21x12 board with cgoban and mark the middle with squares. You can edit away captured stones and if you count just make a big seki in the middle. I know it's not really good, but the best which comes to my mind.

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 Post subject: Re: Donut board
Post #16 Posted: Wed Feb 01, 2012 1:54 am 
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Problem is that the squares disappear once you make a move (they're only recorded for a given node). But yeah, that's the best I've found so far, too.

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 Post subject: Re: Donut board
Post #17 Posted: Wed Feb 01, 2012 3:30 am 
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Numsgil wrote:
Problem is that the squares disappear once you make a move (they're only recorded for a given node). But yeah, that's the best I've found so far, too.


You have to make your moves with the stone edit tool. This way you're still at the same move.

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 Post subject: Re: Donut board
Post #18 Posted: Wed Feb 01, 2012 11:38 am 
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Ah, that's an idea. :)

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 Post subject: Re: Donut board
Post #19 Posted: Sun Nov 22, 2015 3:08 am 
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I like playing on a torus, like emeraldemon. So symmetrical!

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