Author: Paulo Soares
Date: 14:42:47 12/19/99
Go up one level in this thread
On December 19, 1999 at 03:42:55, blass uri wrote:
>On December 19, 1999 at 03:20:54, blass uri wrote:
>
>>8/8/3R4/5k1r/P7/5p2/1K6/8 b - - 0 1
>>
>>This position is from games between Junior5 and inm301.
>>
>>Is there a program that understand that this position is a draw?
>>
>>I think that it is a draw because whits can sacrifice the rook for a pawn and
>>force a draw.
>>
>>I expected tablebases to help programs to see the draw but unfortunately they
>>did not help hiarcs7.32 or crafty16.6 under hiarcs to see the draw.
>>
>>If I am wrong and it is not a draw can a program see a forced mate for one side?
>>Uri
>
>I am probably wrong because after f2 Rd1 Rh3 is winning for black.
>It is not easy for programs to see mate by tablebases because they have no KQ vs
>KRP tablebases.
>
>How much time need your programs to find the simple move Rh3?
>
>Uri
Analyses whit Fritz6's help(Tablebases from CD).
I think that 2... Rh4 seem to be a winner move for the same reason of 2 ...Rh3,
that is to say,this move doesn't leave that the white King gives support to the
pion. I believe that this position is more an example as programs have
problems to analyze positions that demand many plies. In this position the
idea prevails over brute force, therefore I believe that humans have more
chances of finding the wining(s) moves.
8/8/3R4/5k1r/P7/5p2/1K6/8 b - - 0 1
1... f2 {0} 2. Rd1 Rh4 3. Rf1 (3. Kb3 Rf4 4. Rf1 Kg4 5. a5 Kg3 6.
a6 Kg2 7. a7 Rf8 {-+}) 3... Rf4 4. a5 (4. Kc3 Kg4 5. Rxf2 (5. a5 Kg3 6. a6 {+-}
) 5... Rxf2 {#19}) (4. Kb3 Kg4 5. a5 Kg3 {-+}) 4... Kg4 5. Kb3 Kg3 {-+}
Paulo Soares, from Brazil
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