[Retros] HAP webpage updated

Bernd Gräfrath retromode at web.de
Mon Dec 3 09:58:05 EST 2007

Dear retro friends,

I had similar thoughts like Mark when I read about Alain's criterion. I am not sure about this.
On the one hand, a game ending in mate or automatic draw is more complete;
on the other hand, using the mate sign is less economical and makes it easier to achieve soundness.
These are very deep waters of aesthetics...

Best wishes,


> -----Ursprüngliche Nachricht-----

> Von: The Retrograde Analysis Mailing List <retros at janko.at>

> Gesendet: 03.12.07 15:03:15

> An: "The Retrograde Analysis Mailing List" <retros at janko.at>

> Betreff: Re: [Retros] HAP webpage updated


> On Dec 3, 2007 7:19 AM, Alain BROBECKER <abrobecker at yahoo.com> wrote:

> > Dear retro-fans,

> >

> > I searched this WE for first moves in HAP notation.

> > Of course François' work was settling the question...

> > ...except for 1.a3... I can propose the following:

> > 1.P P 2.A P 3.AxP AxA 4.A AxP 5.PxA P 6.AxP P 7.AxP P 8.AxP+ HxA

> > (AB, 2007/12/02,C-)

> >

> > Could someone (yes Mario, you're probably that someone ;) test it?

> >

> > Moreover, when thinking about it this WE i wrote the following:

> > "If two HAP notations have the same number of moves, the preference will go to

> > the one ended in mate or draw, then to the one minimising the number of

> > castling, captures, checks, promotions, Animals moves, Humans moves in this

> > order. "


> Personally, I think that games that do not end mate or draw should be

> preferred to those that do.

> (Games with less restrictive conditions are preferred.)

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