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MatPlus.Net Forum Twomovers Can you find the theme? (Josten 1992)
 
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(1) Posted by Siegfried Hornecker [Friday, May 18, 2007 10:54]

Can you find the theme? (Josten 1992)


I leave it up to you to find the theme of the following problem. I'd like to know if anyone is able to find it.

(= 12+12 )

Gerhard Josten
Schach-Report, 10/1992
Mate in 2
 
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(2) Posted by Jacques Rotenberg [Friday, May 18, 2007 15:05]

I would say "correspondence of nature of the pieces between defences and mate"
So called "Balbo" theme in France.
In a certain point of vue you can include the Bishop variation as a thematic one though it does not really parry the threat : The key controls a square and so threatens a mate, the black Bishop undo this control, so may be seen as a defense, but provokes the control of the same square by another white, and then provokes the same mate.
 
 
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(3) Posted by Siegfried Hornecker [Friday, May 18, 2007 15:38]

I think you found it.
When it was first published the solvers were not able to find the theme. Are there more examples of it?
 
   
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(4) Posted by Michael McDowell [Friday, May 18, 2007 19:41]

Here’s one showing the full set.

G.F.Anderson
Anglo-Portuguese News 1946

(= 16+10 )


Mate in 2

1.Rd5 (-)
1…Kf5 2.Ke3
1…Qxb1 2.Qxb1
1…R any 2.Rxe5
1…Bxg6 2.Bxg6
1…S any 2.Sd6
1…exd4 2.d3



 
   
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(5) Posted by Siegfried Hornecker [Friday, May 18, 2007 20:04]

But in this one not all black pieces move to the same field. Is there any of these?
 
   
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(6) Posted by Jacques Rotenberg [Sunday, May 20, 2007 01:41]

Some problems with defenses on one square, and mates on one square :

Leo Valve
T.T. Suomen Tehavaniekat 1947
(= 10+8 )

2#

1.Qç8! [2.S×f8‡]
1…S×f6 2.S×f6‡
1…é×f6 2.é×f6‡
1…R×f6 2.R×f6‡

Milan Vukcevitch
Chess by Milan 1981
(= 9+13 )

2#

1.Qb8? [2.Qb5‡]
mais 1…d×é5!

1.Bf5? [2.Q×é6‡]
mais 1…R×é5!

1.Qa8! [2.Q×a5‡]
1…R×é5 2.R×ç4‡
1…d×é5 2.d×ç4‡
1…K×é5 2.K×ç4‡

Hubert Gockel
T.T. Boletin da Uniao Brasileira de Problistas 1993
1st Prize
(= 8+8 )

2#

1.Qb5! [2.Ré2‡]
1…B×b5 2.B×ç2‡
1…R×b5 2.R×ç2‡
1…S×b5 2.S×ç2‡
1…f3 2.Qg5‡
1…Q×f2,Qd3 2.Q(×)d3‡
1…Q×é4 2.Qé2‡
1…R×g1 2.Qb6‡
1…Sç4 2.S×ç2‡

David Shire
7th W.C.C.T. 2001-2004
20th place
(= 10+9 )

2#

1.Kf7! [2.Rh5‡]
1…R×g3 2.Ré5‡
1…h×g3 2.é5‡
1…S×g3 2.Sé5‡

1…R×d5 2.R×d5‡
1…ç×d5 2.é×d5‡

1…S×é3 2.S×é3‡

1…g×f5 2.Qg7‡
1…f2 2.Qd1‡
1…g5 2.Rf6‡

with four variations and mate one different square you many samples.

I know one more full set by Kampann and Kerhuel, but I cannot find it right now.


 
   
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(7) Posted by Jacques Rotenberg [Sunday, May 20, 2007 01:45]

with four variations and mates on different squares you have many samples
 
   
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(8) Posted by Frank Richter [Sunday, May 20, 2007 14:59]

Last year I wrote a little article for the german journal Problem-Forum concerning the Balbo.
Here you find the text as PDF (in German, but the content may be clear for all):
http://www.problemschach.de/harmonie/pf-balbothema.pdf

By the way: Who knows why the theme is called "Balbo"?
 
   
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(9) Posted by Jacques Rotenberg [Sunday, May 20, 2007 15:16]

In the namr of Gaston Balbo, who was a french problemist fond of new things ideas and themes.
He invented lots of things, but nowadays, his name is recalled mainly for this theme.
 
   
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(10) Posted by Michael McDowell [Sunday, May 20, 2007 15:48]


 
   
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(11) Posted by Siegfried Hornecker [Sunday, May 20, 2007 16:41]

In the problem of Erwin Groß (Frank Richter shows it in his article, PDF) the theme is called Anti-Balbo:
http://winchloe.free.fr/themes.html
 QUOTE 
At least 3 tries made by pieces of different nature are refuted by moves made by pieces of the same nature than the key piece of the try.


Balbo is defined as:
 QUOTE 
At least 3 defences made by pieces of different nature are followed by moves made by pieces of the same nature than the defending unit.


Well, I think there are balbo theme (as given above) and Balbo task (with all six pieces - or even more in fairy chess), same for Anti-Balbo.



A little offtopic but I found the chess variant "Balbo chess" very interesting (and the computer is weak enough so I could win, sadly it makes bad mistakes).

http://play.chessvariants.org/erf/Balbo.html
 
   
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(12) Posted by Hauke Reddmann [Sunday, May 20, 2007 20:01]; edited by Hauke Reddmann [07-05-20]

I planned a Balbo liaison (<- extremely clever Stanislaw Lem innuendo :-)
for one of the next "Problem Forum" issue but yikes! The Valve problem
more or less anticipates it. (I did it in Fleck form)

Hauke

EDIT: Forgot to highlight - in the Josten problem Bxd2 doesn't parry the threat,
marring the feature...
 
   
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(13) Posted by Zalmen Kornin [Monday, May 21, 2007 08:00]

Once I saw something about Theme Balbo in a book by Joaquim Valladão Monteiro called "Mate em Dois - 222 Temas", but I believe that Frank Richter's article spare the search for this item, as Valladão surelly just presented one of the Problems from the "O Globo" 1960 contest - I find very enlightening to compare Almiro Zarur's number two in Frank's article with G F Anderson's from 1946 presented above by Michael McDowell, because both presents complete six variations Balbos with very different approaches.

* Anti-Balbo - almost every #2 can be an Anti-Balbo 'sans le savoir'...


 
   
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(14) Posted by Zalmen Kornin [Wednesday, May 23, 2007 01:17]

"Once I saw something about Theme Balbo in a book by Joaquim Valladão Monteiro called "Mate em Dois - 222 Temas" - - - Well, it arrives that the Balbo presented there, in 1967, is:

J. J. Ebben
"Koninklijke Nederlandse Schaakbond"
31st TT 1941
Prize

(= 10+9 )

#2

Eight variations from four piece's types (neither King, nor Pawn)

 
 
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MatPlus.Net Forum Twomovers Can you find the theme? (Josten 1992)