[Retros] HAP webpage updated

Bernd Gräfrath retromode at web.de
Mon Dec 3 07:53:44 EST 2007

Dear Mario,

English congratulations on your a3-game! It is nice that you enter the HAP-page (which Alain dedicated to you: a great idea!) also as composer.

Best wishes,


> -----Ursprüngliche Nachricht-----

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

> Gesendet: 03.12.07 13:46:11

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

> Betreff: Re: [Retros] HAP webpage updated


> Dear Alain,


> > ...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?


> Your string doen't work, besides your intended solution,

> there are many minor deviations like:

> 1.a3 a5 2.Nb1-c3 a4 3.Nc3xa4 Ra8xa4 4.Ra1-b1 Ra4xa3 5.bxa3 c6

> 6.Rb1xb7 c5 7.Rb7xd7 c4 8.Rd7xe7+ Qd8xe7


> and also totally different games (again many of them) like:

> 1.h3 h5 2.Ng1-f3 h4 3.Nf3xh4 Rh8xh4 4.Rh1-g1 Rh4xh3

> 5.gxh3 g6 6.Rg1xg6 d6 7.Rg6xd6 e6 8. Rd6xe6+ Bc8xe6


> Both example cooks show some difficulties:

> The first, that 5. ... P 6. ... P without a later

> promotion of that pawn usually will end in cooks.


> The second, that often an intended game has a symmetrical

> twin with the vertical line between d1 and e1 as the

> symmetry axis.



> Here is a correct string for a3:


> 1.P P 2.A HxP 3.AxP HxP 4.AxP HxH 5.AxH



> Regards,


> mario

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