[Retros] shortest Madrasi PG stalemate ended - Solution
andrew buchanan
andrew at anselan.com
Mon Apr 7 20:00:36 EDT 2008
Nicolas,
Can your correct 12-ply version be shortened by 1 ply with
10... d6 11... dxe6?
I think it could still be sound.
Andrew
--- Nicolas.Dupont at math.univ-lille1.fr wrote:
>
> > A shorter one :
> >
> > 1.a4 c5 2.a5 c4 3.Ra4 c3 4.Rc4 f5 5.Rxc8 Nc6 6.a6 Qa5 7.Na3 Qxa3
> > 8.Nf3 Qd6 9.Nd4 Qxh2 10.Rxh2 f4 11.Rxh7 f3 Madrasi =
>
> Ouarff, it is not dual-free. But according to Popeye, the following
> 12-variation is correct :
>
> 1.h2-h4 c7-c5 2.h4-h5 c5-c4 3.Rh1-h4 c4-c3 4.Rh4-c4 f7-f5
> 5.Rc4*c8 f5-f4 6.Rc8*b8 Qd8-a5 7.Sg1-f3 Qa5*a2 8.Sf3-e5 Qa2*b1
> 9.Ra1-a6 f4-f3 10.Ra6-h6 e7-e6 11.Rh6*h7 Sg8-e7 12.h5-h6 Se7-g6
>
> The wrong 11-variation suggests, nevertheless, that 12 might not be
> the
> infimum.
>
> Nicolas.
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