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archive:fun:game_y

Newsgroups: rec.games.abstract From: rrognlie@netcom.com (Richard Rognlie) Subject: Re: The Game of Y: rules/info ? Date: Tue, 13 Dec 1994 23:27:31 GMT

: I am interested in learning more about the game : I saw this reviewed in games magazine 12/94.

The game is played on a roughly triangular board that looks something like the following:

   ____            
  /    \____          
 /   __/    \__         
 \__/  \__     \____      
 /  \     \____/    \__      
/   /   __/    \__     \____   
\   \__/  \__     \____/    \__  
/   /  \     \____/    \__     \__  
\__/   /   __/    \__     \____/  \__ 
/  \   \__/  \__     \____/    \     \__

/ / / \ \/ \ \/ \ \ \/ / / \ \/ \ \ / / \ \/ \ \/ \ \ \ \/ / / \ \/ \ \/ \/ \ / \ \/ / / \ \/ \ \ \ / / / \ \/ \/ \ \ \ \ \ \/ \/ \/ \ \/ \/ \/ \ / / \ / \ / \ \/ \ \ \ \ \/ \/ \/ \/ \ \ \ \ \ / \ / \ / \ / \ / \/ \/ \/ \/ \ \ \/ \/ \/ \/ \ \ \ \ \ / / \ / \ / \ / \ / / / / / \/ \/ \/ \/ \/ \/ \/ \/ \/ / \ / \ / \ / \/ / / / / \ \/ \/ \/ / \/ / / / / / \ / \/ \/ / \/ \/ \/ \ \ \/ / \ / \/ / / / \/ / \ \ \/ / \/ / / / \ \ \/ / \/ / \/ \/ \ \/ / \/ / \/ / / / / \ \ \/ / \/ / \ \ \/ / \/ / \/

\__/   /  \__/     __/    \____/   __/ 
/  \   \     \____/     __/    \__/  
\   \__/   __/    \____/     __/   
/   /  \__/     __/    \____/   
\   \     \____/     __/      
 \__/   __/    \____/       
 /  \__/     __/         
 \     \____/          
  \____/             

Players take turns placing stones of their colour (one player is white, the other black) on the board, trying to connect the 3 sides of the board with a single set of fully connected stones. The stones are placed on the intersection points on the lines. A corner counts as being part of both sides.

Richard – /\/\/\ | Richard Rognlie / Sr. Computer Analyst / PRC Inc. / McLean, VA / \ \ \ | E-Mail: rrognlie@netcom.com *or* rognlie_richard@prc.com \ / / / | Phone: (Home) (703) 361-4764 (Office) (703) 556-2458

\/\/\/  |                                 (Fax)    (703) 556-1174

From: wft@math.canterbury.ac.nz (Bill Taylor) Newsgroups: rec.games.abstract Subject: Re: The Game of Y: rules/info ? Date: 14 Dec 1994 02:07:00 GMT

rrognlie@netcom.com (Richard Rognlie) writes:

The game is played on a roughly triangular board that looks something
like the following:

[Exellent ascii board, program-drawn by Dan Hoey; snipped]

Players take turns placing stones of their colour (one player is white,
the other black) on the board, trying to connect the 3 sides of the board
with a single set of fully connected stones.

And don't forget the variant invented by Dan Hoey & myself, "Projective Y":- played on the same board, but with diametrically opposite edge points identified, (i.e. a board on a projective plane), the winner being the first to make a closed loop which is non-contractible-to-a-point.

This is one of the more abstract of abstract games around; it should appeal to mathematicians in particular. J.H.Conway should have invented it!


            Bill Taylor              wft@math.canterbury.ac.nz

——————————————————————————-

 I'm not one of the main actors in the computing world, just a bit player.

——————————————————————————-

Newsgroups: rec.games.abstract From: rrognlie@netcom.com (Richard Rognlie) Subject: Re: The Game of Y: rules/info ? Date: Fri, 16 Dec 1994 12:42:06 GMT

: Why was the board shaped like that, rather than a straight hexagonal : lattice?

There are 3 points which have only 5 connection points (rather than the normal 6). That forces the curved shape. It also reduces the 1st player advantage a little (in theory). I still opt for 1 move equalization (e.g., player A moves. Player B has option of accepting player A's move as his own, or making his own move. Play continues.) – /\/\/\ | Richard Rognlie / Sr. Computer Analyst / PRC Inc. / McLean, VA / \ \ \ | E-Mail: rrognlie@netcom.com *or* rognlie_richard@prc.com \ / / / | Phone: (Home) (703) 361-4764 (Office) (703) 556-2458

\/\/\/  |                                 (Fax)    (703) 556-1174
/data/webs/external/dokuwiki/data/pages/archive/fun/game_y.txt · Last modified: 1999/11/27 21:05 by 127.0.0.1

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