[Retros] Retro_snippets_001 - Schnoebelen Promotion

[Bernd Gräfrath]

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

> 

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> 



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