Fwd: Re: [Retros] Two little SPG-challenges

[Christoph Fieberg]

Hello,

today I composed also an At-Home-Lazy Spectators-SPG with Ceriani-Frolkin 
and Pronkin in 10.5 moves. The position after 10.0 moves is C+ verified 
after few minutes by Natch. On the final position Natch and Euclide are 
still working (I assume they will need not more than a couple of hours) but 
as for Michel's SPG here is another chance for human cookers to be faster.

Christoph Fieberg - SPG in 10.5 moves - 21.11.04 - C-
1n1qkbnr/p2p1ppp/8/8/8/8/2P1PPPP/1NBQK1NR b Kk - 0 11
SPG 10.5 (11+11)

Best regards,
Christoph




>Hello,

>

>Maybe "Lazy-Spectators-SPG" is not so paradoxical, but it could have been 

>some amusing composing challenge to compose the longest possible such 

>game...some years ago; nowadays, I suspect Francois Labelle will soon come 

>with his computer program and say"hi guys; here it is" (his R153 in 

>Problemesis was the longest serie-SPG with 1 piece moving (24 moves!); so 

>I think he can program similarly the longest SPG with 2 pieces moving? if 

>not, tell us Francois, so the chase can begin!)

>Most LS-SPGs already published are "At-Home" SPGs, a large proportion of 

>them composed by Andrew Buchanan. The most used theme is combination of 

>Ceriani-Frolkin and Pronkin. The longest existing are 9.0 moves.

>

>1)

>Jacques Rotenberg Themes-64 1983

>rnb1kbnr/1ppppp1p/8/8/8/8/P1PPPPP1/1N1QKBNR

>SPG 9.0 (12+13) C+

>

>2)

>Andrew Buchanan Problemesis 2004

>rnbqkbnr/p1ppp3/8/8/8/8/1PP1PP1P/R1BQKBNR

>SPG 9.0 (12+12) C+

>

>Limiting to At-Home-LS-SPG the number of moves can be elevated to 10,5 

>(probably Francois will say more) :

>1nbqkb2/p1pppp2/8/8/8/8/PPPP2PP/1N1QKBNR

>SPG 10.5 (12+10) C+

>(without Ceriani-Frolkin)

>

>with CF I got a position probably cooked :

>rnb1k1n1/pp3p1p/8/8/8/8/P2P2PP/RNB1KBN1

>SPG 10.5 (10+9)

>for the 10.0 first moves the solving times are 18h for Euclide, 32h for 

>Natch and 48h for Popeye : too many capturing moves for Euclide and Natch, 

>too many non capturing moves for Popeye! Some occasion for human cookers 

>to overdo the programs!

>

>Best,

>  Michel

>

>

> > In the solution of Pos. B only one piece of each side

> > does all the work, so I call this a "Lazy-Spectators-SPG".

>

>Why is this paradoxical?

>

>NDE

>

>

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