Re: [computer-go] Differences..

2007-08-03 Thread Benjamin Teuber
I think we already had that discussion once...

These rules completely screw up the notion of territory, as e.g. three single 
points are better than one three-point-block.

My proposal would be a fifth rule that instead of moving you are allowed to 
return one prisoner.
But then, you could as well just allow passes and use (only) stone counting...

Benjamin
 At 07:05 PM 7/26/2007, you wrote:
 What is the difference in Go and Mathematical Go?

 http://brooklyngoclub.org/jc/rulesgo.html

 Is Mathamatical Go a subset of Go as the rules look the same to me as
 regular go.

 not sure. but i belive that the last rule needs to be qualified with the 
 statement that the numbers of captured stones must be the same.

 thanks


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Re: [computer-go] Differences..

2007-07-27 Thread David Doshay
OK, I see now, with more 1 point eyes for W, W will play into B's 2  
areas reducing them to one eye each, and when B can make the  
capturing moves W can play into its own 1 point eyes, but black can't  
play into either its own or W's.


So, I agree this rule set has very different endgame considerations,  
and the intuitive Proof on the web page is flawed.



Cheers,
David



On 27, Jul 2007, at 2:30 AM, Nick Wedd wrote:

In message  
[EMAIL PROTECTED],  
Joshua Shriver [EMAIL PROTECTED] writes

What is the difference in Go and Mathematical Go?

http://brooklyngoclub.org/jc/rulesgo.html

Is Mathamatical Go a subset of Go as the rules look the same to me as
regular go.


The Mathematical Rules of Go are, like the Chinese rules,  
Japanese rules, NZ rules, Tromp-Taylor rules, Ing rules, etc., a  
set of rules by which a game can be played.


It is often asserted that the games defined by all these sets of  
rules are rather similar, at least when played skilfully.  This  
assertion is false.  The game defined by the Mathematical Rules of  
Go is significantly different from the (rather similar) games  
defined by the other rule sets.  You will realise this if you  
consider the position below:


 # # # O . Oentire 6x6 board
 . . # O O .# to play
 . . # O . O
 # # # O O .
 . . # # O O
 . . . # O .

Using the Mathematical Rules of Go, O can win with correct play.  
Under any other rule set, # has already won, or can win with  
correct play. This effect of the value of one-point eyes is much  
more significant than that of the two-stone group tax mentioned  
by David.


Nick
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Re: [computer-go] Differences..

2007-07-27 Thread Nick Wedd
In message 
[EMAIL PROTECTED], Joshua 
Shriver [EMAIL PROTECTED] writes

What is the difference in Go and Mathematical Go?

http://brooklyngoclub.org/jc/rulesgo.html

Is Mathamatical Go a subset of Go as the rules look the same to me as
regular go.


The Mathematical Rules of Go are, like the Chinese rules, Japanese 
rules, NZ rules, Tromp-Taylor rules, Ing rules, etc., a set of rules by 
which a game can be played.


It is often asserted that the games defined by all these sets of rules 
are rather similar, at least when played skilfully.  This assertion is 
false.  The game defined by the Mathematical Rules of Go is 
significantly different from the (rather similar) games defined by the 
other rule sets.  You will realise this if you consider the position 
below:


 # # # O . Oentire 6x6 board
 . . # O O .# to play
 . . # O . O
 # # # O O .
 . . # # O O
 . . . # O .

Using the Mathematical Rules of Go, O can win with correct play. Under 
any other rule set, # has already won, or can win with correct play. 
This effect of the value of one-point eyes is much more significant than 
that of the two-stone group tax mentioned by David.


Nick
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Re: [computer-go] Differences..

2007-07-27 Thread Cenny Wenner
I have pondered about this before however that page's proposal
furthermore changes the value of captures. If black captures x stones,
he may play at these x spots up to x times (depending on other and
size of eyes), avaraging one per capture, at the very most. In both
[territory + captures] (japanese) versus [territory + live stones]
(chinese) rules the value per capture is 2. In order to make the
mathematical go more similar one should force the other player to play
an additional [difference in captures + signed komi] stones before
being declared winners. This would be equivalent to just playing til
neither player has legal moves and then count the live stones and
komi. The remaining eyes is what chinese also covers. This would also
handle Nick Wedd's excellent problem.


On 7/27/07, David Doshay [EMAIL PROTECTED] wrote:
 OK, I see now, with more 1 point eyes for W, W will play into B's 2
 areas reducing them to one eye each, and when B can make the
 capturing moves W can play into its own 1 point eyes, but black can't
 play into either its own or W's.

 So, I agree this rule set has very different endgame considerations,
 and the intuitive Proof on the web page is flawed.


 Cheers,
 David



 On 27, Jul 2007, at 2:30 AM, Nick Wedd wrote:

  In message
  [EMAIL PROTECTED],
  Joshua Shriver [EMAIL PROTECTED] writes
  What is the difference in Go and Mathematical Go?
 
  http://brooklyngoclub.org/jc/rulesgo.html
 
  Is Mathamatical Go a subset of Go as the rules look the same to me as
  regular go.
 
  The Mathematical Rules of Go are, like the Chinese rules,
  Japanese rules, NZ rules, Tromp-Taylor rules, Ing rules, etc., a
  set of rules by which a game can be played.
 
  It is often asserted that the games defined by all these sets of
  rules are rather similar, at least when played skilfully.  This
  assertion is false.  The game defined by the Mathematical Rules of
  Go is significantly different from the (rather similar) games
  defined by the other rule sets.  You will realise this if you
  consider the position below:
 
   # # # O . Oentire 6x6 board
   . . # O O .# to play
   . . # O . O
   # # # O O .
   . . # # O O
   . . . # O .
 
  Using the Mathematical Rules of Go, O can win with correct play.
  Under any other rule set, # has already won, or can win with
  correct play. This effect of the value of one-point eyes is much
  more significant than that of the two-stone group tax mentioned
  by David.
 
  Nick
  --
  Nick Wedd[EMAIL PROTECTED]
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Re: [computer-go] Differences..

2007-07-27 Thread Barry Phease

   http://brooklyngoclub.org/jc/rulesgo.html
  
   Is Mathamatical Go a subset of Go as the rules look the same to me as
   regular go.


The rules described here are not mathematical go, but no-pass go.  In
mathematical go a move consists of a board play or by handing the
opponent back a captured stone.  This is equivalent to stone scoring.

-- 
Barry Phease

mailto:[EMAIL PROTECTED]
http://barry.phease.org.nz

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Re: [computer-go] Differences..

2007-07-26 Thread David Doshay
Willing to accept the intuitive proof for the moment, what I see is  
that

the key differences are that

1) there is no komi (black giving points to white for playing first)
2) there is a 2 point penalty for each living group.

Otherwise it does look like this is similar to any other Go rules that
include positional super-ko.

My favorite line:

this is a great book if you're a serious mathematician, and a  
completely

baffling one otherwise.

Cheers,
David



On 26, Jul 2007, at 7:05 PM, Joshua Shriver wrote:


What is the difference in Go and Mathematical Go?

http://brooklyngoclub.org/jc/rulesgo.html

Is Mathamatical Go a subset of Go as the rules look the same to me as
regular go.

-Josh
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Re: [computer-go] Differences..

2007-07-26 Thread terry mcintyre
Where does the two-point penalty come from? It's not directly stated in the 
rules, so presumably it emerges from the four simple rules. Actually, neither 
the two-point penalty nor Komi are meaningful - there is no count to which 
any penalties could be added or subtracted.  Passing, suicide, and superko are 
prohibited. Available moves eventually diminish to zero. The person with the 
smallest territory loses, unable to make a legal move.
 
Terry McIntyre [EMAIL PROTECTED]
They mean to govern well; but they mean to govern. They promise to be kind 
masters; but they mean to be masters. -- Daniel Webster

- Original Message 
From: David Doshay [EMAIL PROTECTED]
To: computer-go computer-go@computer-go.org
Sent: Thursday, July 26, 2007 8:02:17 PM
Subject: Re: [computer-go] Differences..

Willing to accept the intuitive proof for the moment, what I see is  
that
the key differences are that

1) there is no komi (black giving points to white for playing first)
2) there is a 2 point penalty for each living group.

Otherwise it does look like this is similar to any other Go rules that
include positional super-ko.

My favorite line:

this is a great book if you're a serious mathematician, and a  
completely
baffling one otherwise.

Cheers,
David



On 26, Jul 2007, at 7:05 PM, Joshua Shriver wrote:

 What is the difference in Go and Mathematical Go?

 http://brooklyngoclub.org/jc/rulesgo.html

 Is Mathamatical Go a subset of Go as the rules look the same to me as
 regular go.

 -Josh
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Re: [computer-go] Differences..

2007-07-26 Thread David Doshay

The 2 points per living group comes from the fact that in order
to avoid loosing, one plays into one's own territory until down to
2 eyes. While legal to fill one, that leads to capture, so it won't be
done. As you say, there is no other counting needed because the
smaller territory fills first.

Cheers,
David



On 26, Jul 2007, at 8:25 PM, terry mcintyre wrote:

Where does the two-point penalty come from? It's not directly  
stated in the rules, so presumably it emerges from the four simple  
rules. Actually, neither the two-point penalty nor Komi are  
meaningful - there is no count to which any penalties could be  
added or subtracted.  Passing, suicide, and superko are prohibited.  
Available moves eventually diminish to zero. The person with the  
smallest territory loses, unable to make a legal move.


Terry McIntyre [EMAIL PROTECTED]
They mean to govern well; but they mean to govern. They promise to  
be kind masters; but they mean to be masters. -- Daniel Webster



- Original Message 
From: David Doshay [EMAIL PROTECTED]
To: computer-go computer-go@computer-go.org
Sent: Thursday, July 26, 2007 8:02:17 PM
Subject: Re: [computer-go] Differences..

Willing to accept the intuitive proof for the moment, what I see is
that
the key differences are that

1) there is no komi (black giving points to white for playing first)
2) there is a 2 point penalty for each living group.

Otherwise it does look like this is similar to any other Go rules that
include positional super-ko.

My favorite line:

this is a great book if you're a serious mathematician, and a
completely
baffling one otherwise.

Cheers,
David



On 26, Jul 2007, at 7:05 PM, Joshua Shriver wrote:

 What is the difference in Go and Mathematical Go?

 http://brooklyngoclub.org/jc/rulesgo.html

 Is Mathamatical Go a subset of Go as the rules look the same to  
me as

 regular go.

 -Josh
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Re: [computer-go] Differences..

2007-07-26 Thread David Doshay

So, with these exchanges and just a little more thought, the part
of The Alternating Rule that is in red:
The first player who cannot put down a stone without
breaking a rule loses the game
is not the way the game would actually be played. It would be more
accurate to add something about choosing not to add another stone,
which would cover the decision not to fill one of your own last eyes.

Cheers,
David



On 26, Jul 2007, at 9:12 PM, David Doshay wrote:


The 2 points per living group comes from the fact that in order
to avoid loosing, one plays into one's own territory until down to
2 eyes. While legal to fill one, that leads to capture, so it won't be
done. As you say, there is no other counting needed because the
smaller territory fills first.

Cheers,
David



On 26, Jul 2007, at 8:25 PM, terry mcintyre wrote:

Where does the two-point penalty come from? It's not directly  
stated in the rules, so presumably it emerges from the four simple  
rules.


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