|(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 )
Mate in 2
|(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.
|(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?
|(4) Posted by Michael McDowell [Friday, May 18, 2007 19:41]|
Here’s one showing the full set.
Anglo-Portuguese News 1946
(= 16+10 )
Mate in 2
1…R any 2.Rxe5
1…S any 2.Sd6
|(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?
|(6) Posted by Jacques Rotenberg [Sunday, May 20, 2007 01:41]|
Some problems with defenses on one square, and mates on one square :
T.T. Suomen Tehavaniekat 1947
(= 10+8 )
Chess by Milan 1981
(= 9+13 )
T.T. Boletin da Uniao Brasileira de Problistas 1993
(= 8+8 )
7th W.C.C.T. 2001-2004
(= 10+9 )
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.
|(7) Posted by Jacques Rotenberg [Sunday, May 20, 2007 01:45]|
with four variations and mates on different squares you have many samples
|(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):
By the way: Who knows why the theme is called "Balbo"?
|(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.
|(10) Posted by Michael McDowell [Sunday, May 20, 2007 15:48]|
|(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:
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:
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).
|(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)
EDIT: Forgot to highlight - in the Josten problem Bxd2 doesn't parry the threat,
marring the feature...
|(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'...
|(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
(= 10+9 )
Eight variations from four piece's types (neither King, nor Pawn)
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