AW: [Retros] SPG task (1+1)

[CAILLAUDM at aol.com]

Dans un e-mail daté du 25/01/2004 19:15:14 Pays arabes, 
g.wilts at mnet-online.de a écrit :


> >Open question: Make an exact PG in Anti-Andernach, which ends with two

> Kings.

> >  Paul Raican

> 

> There is no such PG in 16,0 moves although 39 different positions with two

> Kings only can be reached in 16,0 moves in Anti-Andernach. But with Einstein

> Chess it seems possible to construct a Kings-only PG:

> 

> Gerd Wilts

> 8/4k3/8/8/8/8/4K3/8

> +---+---+---+---+---+---+---+---+

> |   | . |   | . |   | . |   | . |

> +---+---+---+---+---+---+---+---+

> | . |   | . |   |*K |   | . |   |

> +---+---+---+---+---+---+---+---+

> |   | . |   | . |   | . |   | . |

> +---+---+---+---+---+---+---+---+

> | . |   | . |   | . |   | . |   |

> +---+---+---+---+---+---+---+---+

> |   | . |   | . |   | . |   | . |

> +---+---+---+---+---+---+---+---+

> | . |   | . |   | . |   | . |   |

> +---+---+---+---+---+---+---+---+

> |   | . |   | . | K | . |   | . |

> +---+---+---+---+---+---+---+---+

> | . |   | . |   | . |   | . |   |

> +---+---+---+---+---+---+---+---+

> (1+1)   PG in 16,5

> Einstein

> 

> 1. d4 c5 2. Lg5[=wS] cxd4[=sS] 3. Sxh7[=wL] Sxe2[=sL] 4. Lxg8[=wT] Txh2[=sD]

> 5. Txg7[=wD] Lxg7[=sT] 6. Txh2[=wD] Txg2[=sD] 7. Dxb8 Dxg1 8. Dxa7 Dxf2+

> 9. Dxf2 Txa2[=sD] 10. Dxf7+ Kxf7 11. Dxd7 Dxb2 12. Dxc8 Dxb1+

> 13. Txb1[=wD] Dxc8 14. Dxb7 Dxc2 15. Dxe7+ Kxe7 16. Lxe2[=wT]+ Dxe2+ 17.

> Kxe2

> 

> I used a computer to construct this PG. As I used hash tables the program

> might give PGs where moves can be transposed, so the resulting PGs must be

> checked

> manually for move transpositions. In this case no transposition seem

> possible.

> 

> Cheers,

> 

> Gerd Wilts

> 

> 

 It can also easily be checked not manually but by Popeye : C+ !

 Best,
  Michel
 
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