[Retros] Retro_snippets_001 - Schnoebelen Promotion

Bernd Gräfrath retromode at web.de
Wed Dec 17 07:37:47 EST 2008


Dear retro-friends,

Mario asks: - And which was the very first PG showing a Schnoebelen Queen?

Well, this can, of course, not be shown in an orthodox proof game. And I only know of one example in a fairy proof game, and that is
my problem no. 1107 in Mat Plus No. 31 (Autumn 2008), using Circe.

Best wishes,

Bernd




> -----Ursprüngliche Nachricht-----

> Von: "Mario Richter" <mri_two at t-online.de>

> Gesendet: 17.12.08 06:44:10

> An: "Retros Mailing List" <retros at janko.at>

> Betreff: [Retros] Retro_snippets_001 - Schnoebelen Promotion




> Dear Retrofans,

>

> more and more chess problem sources have been digitized

> and are now available to a broader public.

>

> Sometimes one can fill gaps in the knowledge about certain

> chess problem aspects (Valery Liskovets' article about

> forced e.p. in 'Die Schwalbe', October 2008 is a good example),

> sometimes even some surprising new facts can be discovered.

>

>

> So here is one, which is about 'Schnoebelen promotions'.

>

>

> Our Retro Wiki (http://retrowiki.janko.at/index.php/Schnoebelen )

> gives the following definition:

>

> "A promotee is captured on its promotion square

> without having moved after the promotion."

>

> The Wiki doesn't explain, why it is named 'Schnoebelen'.

>

> The answer is simple:

> It is named after Philippe Schnoebelen, who has introduced this

> idea in the area of Proof Games.

>

> In his own words:

> (s. http://www.lsv.ens-cachan.fr/~phs/perso.php )

>

> "I invented what is now called 'The Schnoebelen Promotion Theme'

> in chess problems.

> Rather than describe the theme and spoil all the fun, I'd rather

> let you solve the following puzzle:

>

> Ph. Schnoebelen

> Probleemblad 09/1996

>

> a b c d e f g h

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

> | |*n |*n | B | |*r | | . | 8

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

> | . | |*p |*p | . |*p | . | | 7

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

> | | . | |*k | | . | | . | 6

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

> |*p | | . | | . | | . |*p | 5

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

> | | . |*q | . | | . | | Q | 4

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

> | . | | . | | P | |*p |*r | 3

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

> | | P | P | . | | P | P | P | 2

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

> | R | N | . | | K | B | N | R | 1 (14+12)

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

> a b c d e f g h

>

> 1nnB1r2/2pp1p2/3k4/p6p/2q4Q/4P1pr/1PP2PPP/RN2KBNR

>

> Invent a legal chess game that reaches the above position

> just after Black's 15th move. "

>

> So far Philippe about his idea.

>

>

> [Interestingly, in a comment to the solution

> (presented at problem 3075 at

> http://www.janko.at/Retros/Probleemblad/Solutions.htm)

> the theme is explained as "Hyper-Frolkin theme where Frolkin

> promotees do not move at all between promotion and capture."]

>

>

> But as already Johann Wolfgang von Goethe knew:

> (Faust. Part II)

> MEPHISTOPHELES.

> Original, fahr hin in deiner Pracht! -

> Wie würde dich die Einsicht kränken:

> Wer kann was Dummes, wer was Kluges denken,

> Das nicht die Vorwelt schon gedacht! -

>

> Go forth in splendour, you primal man! -

> How could insight harm you, ever:

> Who can think of stupid things or clever,

> That past ages didn't, long ago, understand.

>

> (and of course Goethe too was anticipated, e.g. by

> Publius Terentius Afer, ~185-159 B.C.: "Nullumst iam

> dictum quod non sit dictum prius." [Nothing is ever

> said that has not been said before.]).

>

>

>

>

> When studying the August 1948 issue of the

> 'Fairy Chess Review' (Vol.7 No.1, available at

> http://problem64.beda.cz/silo/fcr_1_1948.pdf),

> I came across the following short article in the section

> "5-Minute Papers" (page 94):

>

> ## Start of quotation #######################################

>

> No.117

> The captured promoted piece never moved

> By Dr. Ing. L.Ceriani, Milan

>

> Here is a quite new, and I believe very difficult

> idea in retrograde analysis. It is required to show

> in the retro developement of a position that a Pawn

> has promoted to a definite piece, has stood unmoved

> as the piece for at least one turn, and has dis-

> appeared captured on the promotion square. The

> difficulty lies in the second condition mainly, for

> if the capture were immediate nothing could deter-

> mine the nature of the piece. After prolonged

> research, I obtained Nos. 7743-4.

>

> No. 7743

>

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

> | | . |*n | R | R | N | |*n | 8

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

> | . |*k | N |*p | K | P | P | P | 7

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

> |*r | P |*b | P |*p |*p |*p |*p | 6

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

> |*p |*p | . |*p | . | | . | P | 5

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

> | | . | | . | | . | | . | 4

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

> | . | | . | | . | | . | | 3

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

> | P | . | | . | | . | | . | 2

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

> | . | | . | | . | | . | | 1 (12+13)

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

> a b c d e f g h

>

> 2nRRN1n/1kNpKPPP/rPbPpppp/pp1p3P/8/8/P7/8

>

>

>

> No. 7744

>

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

> | | K | |*q | |*b | | . | 8

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

> |*n |*p | Q |*p |*k | P | P | | 7

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

> |*r | P | B | R |*p |*r |*p | . | 6

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

> |*p |*p | . |*p | . |*p | . | | 5

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

> | | . | | . | | . | | . | 4

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

> | . | | . | | . | | . | | 3

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

> | P | . | | P | | P | | . | 2

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

> | . | | . | | . | | . | | 1 (10+14)

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

> a b c d e f g h

>

> 1K1q1b2/npQpkPP1/rPBRprp1/pp1p1p2/8/8/P2P1P2/8

>

> What were the last moves in each of these?

>

> [... solution omitted in case you want do it for

> yourself. If you have difficulties in finding the

> solutions, see Henrik Juel's analysis in the PDB:

> www.softdecc.de/pdb/search.pdb?expression=PROBID='P0005073',

> www.softdecc.de/pdb/search.pdb?expression=PROBID='P0005071',

> ]

>

> The theme is not very fruitful: I think it is

> impossible to use a Q as theme piece, but I hope the

> R may be used. Another possibility is later defer-

> ment of the capture.

>

>

> ## End of quotation #######################################

>

>

> As the developement shows, Ceriani was at least partially

> wrong with his assumptions.

>

> The theme is very fruitful, Rooks can be the thematical piece too

> (e.g. www.softdecc.de/pdb/search.pdb?expression=PROBID='P1067871'),

> and using fairy conditions, both unique immediate captures and

> even Schnoebelen Queens have been presented, for the latter s. e.g.

>

> Kostas Prentos & Andrey Frolkin

> Eteroscacco 1/2007

> 1. Honourable Mention

> SPG 16.5, Multicapture Chess

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

> |*r |*n |*b |*q |*k |*b |*n |*r | 8

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

> |*p |*p |*p |*p |*p | | . | | 7

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

> | | . | | . | | . | | . | 6

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

> | P | | . | | . | | . | P | 5

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

> | | . | | P | | R | | R | 4

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

> | . | | . | | N | | . | N | 3

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

> | | P | | . | | K | | . | 2

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

> | . | | . | | . | | B | B | 1 (11+13)

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

> a b c d e f g h

>

> rnbqkbnr/ppppp3/8/P6P/3P1R1R/4N2N/1P3K2/6BB

>

> (s. http://www.eteroscacco.it/esp/verdetti_0607.html#vret )

>

>

>

> Some open questions:

>

> - Which was the very first PG showing a Schnoebelen promotion?

>

> - And which was the very first PG showing a Schnoebelen Queen?

>

> - Using fairy conditions, has a Schnoebelen-AUW already been

> realized?

>

> - Longest move difference between promotion and capture?

>

> - What was the outcome of the Thematical Tourney, announced by

> L.Ceriani in the above quoted FCR article?

> (F.C.R. 13th TOURNEY, closing date: 31. December 1948)

>

> - should the Theme more correctly be called

> "Ceriani-Hyper-Frolkin-Schnoebelen-Promotion"? :-)

>

>

>

> Best regards,

>

> mario

>

> _______________________________________________

> Retros mailing list

> Retros at janko.at

> http://www.pairlist.net/mailman/listinfo/retros

>



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