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MatPlus.Net Forum General The Solving Tests will expire soon
 
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(1) Posted by Marjan Kovačević [Wednesday, Jan 22, 2014 00:43]

The Solving Tests will expire soon


This is the last week of the series of Solving Tests prepared by Milan. We shall try to keep system working, but the result is not guaranteed.
 
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(2) Posted by Jacques Rotenberg [Monday, Feb 3, 2014 09:55]

It seems it started again !!! (Today there is a set !)

Thx !!
 
 
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(3) Posted by Marjan Kovačević [Monday, Feb 3, 2014 13:20]

It will not be an easy task to assure a smooth work without the sources Milan used, but we hope the Tests will survive.
 
   
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(4) Posted by Siegfried Hornecker [Monday, Feb 3, 2014 14:09]; edited by Siegfried Hornecker [14-02-03]

Although not desirable, wouldn't it be a viable in-between solution to randomly choose previous tests that are at least 2 years old to be presented again?
 
   
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(5) Posted by Jacques Rotenberg [Tuesday, Feb 4, 2014 14:01]

Today in the pb 4 it seems that a black queen is missing on a5 or b4
 
   
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(6) Posted by Marjan Kovačević [Wednesday, Feb 5, 2014 13:13]

Jacques, what is pb4? Could you check it, all problems seems to be correct?
 
   
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(7) Posted by Jacques Rotenberg [Wednesday, Feb 5, 2014 14:21]

test 2448 problem 4
after a quick search in Winchloe, there is a black queen in a5

this was easy to understand because without this black queen you have a dual and also some black pawns have no use
 
   
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(8) Posted by Marcos Roland [Wednesday, Feb 5, 2014 15:12]

O.K., the BQ on a5 avoids the dual after 1...d1=N. But my question is: is this 1...d1=N variation important if there was not a correlate variation with 1...b1=N? Against the latter White has 2.Nf4#, 2.Nc1# and 2.Qe1#. It seems it's impossible to avoid this "triple". So, maybe a more harmonious presentation for the problem is eliminating the BQ and the pawns on c5 and d4.
 
   
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(9) Posted by Jacques Rotenberg [Wednesday, Feb 5, 2014 15:20]; edited by Jacques Rotenberg [14-02-05]

It could be an exercise to propose versions for this problem.
The half-pin is obviously the main feature here.
However, 1...b1=S does not defeat the threat
 
   
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(10) Posted by Jacques Rotenberg [Friday, Feb 7, 2014 00:50]

Test 2451 7 Februar problem 1

I indicated the key, the computer writes that it is the key,
And gives it as a wrong answer !!
 
   
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(11) Posted by Marcos Roland [Friday, Feb 7, 2014 01:28]

The same occurred to me.
 
   
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(12) Posted by Administrator [Friday, Feb 7, 2014 07:40]

corrected!
 
   
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(13) Posted by Marcos Roland [Friday, Feb 7, 2014 11:35]

Thanks for the correction and thanks a lot for keeping the Solving Tests alive!
 
   
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(14) Posted by Jacques Rotenberg [Friday, Feb 7, 2014 12:11]

thx!
 
   
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(15) Posted by Jacques Rotenberg [Friday, Feb 14, 2014 08:09]

Test 2458 problem 6
May you check it ?
Thx
 
   
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(16) Posted by Marcos Roland [Friday, Feb 14, 2014 11:36]

The same, please. It seems the given key it's an impossible move.
 
   
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(17) Posted by Administrator [Friday, Feb 14, 2014 11:40]

corrected!
 
   
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(18) Posted by Jacques Rotenberg [Friday, Feb 14, 2014 15:03]

thx
 
 
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MatPlus.Net Forum General The Solving Tests will expire soon