|(1) Posted by Milan Velimirović [Sunday, Sep 24, 2006 14:06]|
Where to put the White King?
This should be a Mate in two, just add the White King.
Where would you prefer him. And why?
|(2) Posted by Mihail Croitor [Sunday, Sep 24, 2006 15:20]|
The best place for White King - d3. Appear solution of twomover:
1. Qd4 block
1. ... d6 2. Qe4#; 1. ... d5 2. Qf6#; 1. ... Ke7 2. Qxd7#; 1. ... Kf5 2. Qe4#
From last variant we can see that white need to take e4 under atack. also White king can be situated on e3, f3...
i answered correctly?! ;)
|(3) Posted by Miodrag Mladenović [Sunday, Sep 24, 2006 15:23]; edited by Miodrag Mladenović [06-09-24]|
It looks to me that white king shuold be on d3. With a keymove 1.d4! (two flights). Nice miniature!
|(4) Posted by Miodrag Mladenović [Sunday, Sep 24, 2006 15:25]|
Yes, I was late for three minutes. While I was typing my messge Mihail posted same solution.
|(5) Posted by Milan Velimirović [Sunday, Sep 24, 2006 16:57]|
Too obvious! ... Or is it !?!?!?!?
|(6) Posted by Miodrag Mladenović [Sunday, Sep 24, 2006 17:39]; edited by Miodrag Mladenović [06-09-24]|
f3 is out of question because there is trial after 1...f5 2.e4 or f6 or d5#
e3 is OK but it's better if king is on d3 because otherwise f4 is guarded twice in solution (by wK and wQ)
Of course I saw possiblity where white king is on g3 with 1...f5 2.d5#. For some reasons I like more on d3.
There is also possibility where wK is on h6 or h5 with 1.d4! f5 2.xd7# but because of capturing of I like more position where is on d3.
So my final answer is that can be on d3,e3,g3,h6 or h5. However I still like the most solution where is on d3.
|(7) Posted by Milan Velimirović [Sunday, Sep 24, 2006 17:43]|
Misha, did you count the number of different mating moves??
btw, with Kh5 or Kh6 cook 1.Sf8+!
|(8) Posted by Eric Huber [Sunday, Sep 24, 2006 18:10]|
It seems that d3, e3 and g3 are equivalent fields for the white King (there is even the same "try" 1.g5? d6! ). The only difference is the mate after move 1...f5 : with white King at g3, the mate 2.d5# is model, while it is not the case after 2.e4# when white King stands at d3 or e3. Therefore I would prefer g3.
h6 and h5 are not good, because there are two solutions: 1.d4! and 1.f8+!
Another (worse) possibility is to put white King at d8, with stupid key 1.g6! zz and only two variations 1...d6 2.f5#; 1...d5 2.e7# and not even one model mate.
Conclusion: my podium is 1.g3 2.d3/e3 3.d8 :-)
|(9) Posted by Eric Huber [Sunday, Sep 24, 2006 18:43]|
Oops, sorry, mate 2.d5# is not model!
Then I can't see any objective reason for preferring either of fields d3, e3 or g3, except that the position seems better balanced with the white King on the Kingside (g3).
|(10) Posted by Milan Velimirović [Monday, Sep 25, 2006 02:17]|
The game of chess is so great that it always offers something more than expected. That's what every composer should keep in mind!
Even my small and innocent question about a little miniature led to an at least for me unexpected result.
I think that position with Kg3 is undoubtedely the best, not only for its greater variety, but because the mate 2.Dd5 is the most beautiful of all. It is not a model, but it is still a mirror mate! The author also thought so, obviously:
However, Eric Huber's "third choice" was an unexpected discovery for me. Despite inferior to Stocchi's position, it is an acceptable miniature twomover, as a matter of fact a twin with two changed mates after black selfblocks compared to his 80 years older "twin brother" :)), and therefore deserves a diagram.
L'Avvenire d'Italia 1926
1... d6 2.Qe4#
1... d5 2.Qf6#
1... Kf5 2.Qd5#
1... Ke7 2.Qd7:#
This (probably but not necessarily) concludes today's "Promenade". Will there be another tomorrow?!? Your move!
twin by Eric Huber (2006)
1... d6 2.Qf5#
1... d5 2.Qe7#
|(11) Posted by seetharaman kalyan [Thursday, Jun 17, 2010 20:49]; edited by seetharaman kalyan [10-06-17]|
I don't remember the author. But I have seen this problem (decades ago)as a mutate.
Position: W: Ke8, Qd4, Ps g4,g5 - Black Kc6, Pd7.
Key. 1.Qc5 !
No twin necessary !!
Are there any other examples of two changed self-blocks in miniature?
Can there be a better example to showcase to newcomers?
|(12) Posted by Jan Hein Verduin [Friday, Jun 18, 2010 21:31]|
Nice one; I sometimes daydream of writing a problem book with elementary settings of themes, and this one would probably qualify (btw the black king should be on e6). But as is usually the case with these good finds, a quick search revealed this particular setting has been published by at least six authors; the oldest (so far!) being
Falkirk Herald 1924
|(13) Posted by Jacques Rotenberg [Sunday, Jun 20, 2010 13:54]|
According to WinChloe, re-made afterwards by :
Evgeny Umnov, Svenska Dagbladet 1929
Knud Hannemann, Nationaltidende 1944
Norman Macleod, Nationaltidende 1950
Jozsef Bajtay, Skakbladet 1955
(cf. ID 115515, ID 146834, ID 231249, ID 295811, ID 302886, ID 303924, ID 303925, ID 303926 in WinChloe}
|(14) Posted by Jan Hein Verduin [Monday, Jun 21, 2010 20:06]|
And according to Yet another chess problem database (http://dt.dewia.com/yacpdb/#SearchHelp) also made by:
Guido Cristoffanini, Rheinische Landeszeitung, 1934
Sven Ekström, Schackvärlden, 1943
Henrik Źuk, Il Due Mosse, 1957
Miloš Lakatoš, ???, 1983
This must be then one of the most often anticipated problems ever.
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MatPlus.Net Forum Promenade Where to put the White King?