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MatPlus.Net Forum General Stale Berlin
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(1) Posted by Hauke Reddmann [Thursday, Jul 9, 2020 18:44]

Stale Berlin

No, maybe as a citizen of Hamburg I think Berlin is stale :P
but of course I didn't mean that! A simple #3 sketch:

(= 4+11 )

1.b3? a3! 2.b4 b5 ends White being stalemated (instead of mated
in the Berlin theme). 1.b4? a3! 2.b5 of course makes no difference.
Thus foreplan: 1.a3! 2.b3,4 3.Kb2#

I guess since it's extremely hard to stalemate White while he still
has enough mating potential in another variant, the possibilities
are limited. Do you still know an example?
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(2) Posted by Kevin Begley [Thursday, Jul 9, 2020 23:33]; edited by Kevin Begley [20-07-09]

I like where you're going...
Unfortunately, yes, the opposing constraints (of stalemate vs sufficient-mating-material) you note are indeed a choking vine.

But, there's a magical place, called fairy chess, where juicy fruit gum grows on the vine.
Relocate (but send a postcard like you're on vacation).
(Read Only)pid=19321
(3) Posted by Rewan Demontay (Real Name: James Malcom) [Friday, Jul 10, 2020 03:40]; edited by Rewan Demontay (Real Name: James Malcom) [20-07-10]

May I suggest an example of a lighter version of your problem, Hauke? :)

(= 7+8 )

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(4) Posted by Hauke Reddmann [Friday, Jul 10, 2020 13:15]

You may :-)
In the meantime, I was PMed that this is called "Balken" theme
(after a restaurant in Berlin where the idea was coined) and
here is a nice example with a similar setup:

"Balken" should be searchable in the PDB.
(Read Only)pid=19327

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MatPlus.Net Forum General Stale Berlin