From: James Dow Allen on
On Jul 27, 5:19 pm, Leroy Quet <qqq...(a)mindspring.com> wrote:
> James Dow Allen wrote:
> > Too bad the game isn't on a torus topology!
> > Then there'd be only two distinct first moves!
>
> Isn't it just one distinct first move with torus topology?

It's your game, but doesn't the first move on 4x4 consist
of placing an 'X' and then uttering '1', '2' or '3'?
Uttering 1 is equivalent to uttering 3, but not 2.

On Jul 27, 9:14 pm, Mark Steere <markste...(a)gmail.com> wrote:
> Three inadequacies??  Dammit that sucks.   I had such high hopes for
> Connect 4 Popout.

Buy my book! I have a chapter on Popout with amended rules,
example games, and strategies. My amended rules are:
(1) When PopOut leads to 4-in-line of *both* colors,
Popper wins. (Hasbro claimed this was rare, but it happened
almost every game when my son and I started playing!)
(2) When the board is full, player has the option of popping
or declaring a draw.
(3) Repetition of moves (which *can* arise in well-played
games) are settled by the same 3-time rule as in chess.

James Dow Allen
From: Leroy Quet on


James Dow Allen wrote:
> On Jul 27, 5:19 pm, Leroy Quet <qqq...(a)mindspring.com> wrote:
> > James Dow Allen wrote:
> > > Too bad the game isn't on a torus topology!
> > > Then there'd be only two distinct first moves!
> >
> > Isn't it just one distinct first move with torus topology?
>
> It's your game, but doesn't the first move on 4x4 consist
> of placing an 'X' and then uttering '1', '2' or '3'?
> Uttering 1 is equivalent to uttering 3, but not 2.
>

Oh, you are talking about FULL moves (x plus declaration). I was just
talking about the placement of the x.

Thanks,
Leroy Quet

From: Mark Steere on
On Jul 27, 9:03 am, James Dow Allen <jdallen2...(a)yahoo.com> wrote:
>
> Buy my book!

Uh... no.

> I have a chapter on Popout with amended rules,

I got your popout right here.
From: James Dow Allen on
On Jul 27, 4:55 pm, James Dow Allen <jdallen2...(a)yahoo.com> wrote:
> I may write a brute-force solver ...

Seemed to work, but not certifiable.

To win the 3x3 game, first player
plays anywhere but center and declares 2.

In 4x4, the three winning first moves are
. X . . Declare 3
. . . .
. . . .
. . . .
or
X . . . Declare 2 or 3
. . . .
. . . .
. . . .

In 5x5, there are 20 distinct first moves,
15 of which win.

I wrote (almost) the simplest possible
brute-force solver. (I was too slothful
even to include a transposition cache.)
It solved the 4x4 in about one-quarter of a
second, and all starting moves in the 5x5
in 89 minutes.

More interesting of course would be to
analyze the game heuristically. If no
unreachable holes develop, 1st player wins
with odd number of empty cells, and indeed
most 1st moves lose on 4x4, but win on 5x5.

James Dow Allen
From: Mark Steere on
James Dow Allen wrote (via email):

> Hi Mark,

>> I got your popout right here.

> Are you saying you have a preprint copy of my book already?
> May I ask where you got it?

I found it at a clearance sale, in the "Don't bore us with inadequate
Hasbro games" section.