The Game Of Y, With Cool ASCII Illustration

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

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