[Retros] Task - double check mate

[Allan Bell]

Yes.  It's a pity that all other knight moves are mate as well, including
the other double-check mate 6.... Se7-d5.

It achieves the task, but the double check is not required to give mate
(sufficient, but not necessary).  Is there a short game where the final
double-check on the home square is the only move to deliver mate?

Regards,

Allan.


----- Original Message ----- 
From: <raosorio at fibertel.com.ar>
To: <unlisted-recipients:>; <no To-header on input>
Sent: Monday, October 02, 2006 12:28 PM
Subject: [Retros] Task - double check mate


>
> Allan Bell wrote,
>
> As suggested by Noam, here is a double check-mate (with captures) given by
> a piece returning to its home square.  Both checks are required.
>
> 1.Pa2-a4   Pe7-e5   2.Ra1-a3   Ke8-e7   3.Ra3-e3   Ke7-d6
> 4.Sb1-c3   Kd6-c5   5.Pb2-b4   Kc5xb4   6.Bc1-a3   Kb4xa3
> 7.Qd1-b1   Pb7-b5   8.Qb1xb5   Bf8-b4   9.Ke1-d1   Pd7-d6
> 10.Kd1-c1   Bc8-f5   11.Kc1-b1   Bf5xc2   12.Kb1-a1   Pf7-f5
> 13.Sc3-b1
>
> But there must be a shorter setting.
>
> Here is one without captures,
>
> 1.Pe2-e3   Pd7-d6   2.Ke1-e2   Bc8-h3   3.Ke2-f3   Pe7-e6
> 4.Kf3-f4   Sg8-e7   5.Kf4-g5   Pg7-g6   6.Kg5-f6   Se7-g8
> natch 0.22 s
>
> Regards,
>
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