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Subject: Re: Fritz problems in rook/pawn ending

Author: Sune Larsson

Date: 07:42:05 12/14/02

Go up one level in this thread


On December 14, 2002 at 06:51:19, Kurt Utzinger wrote:

>A most interesting position that quite a lot of engines are unable to assess
>correctly. For me however, the more important question is if this is a good
>example because it demonstrates an exception of the rule in this kind of
>position that Black should not exchange pieces. And for this reason it may be
>not worth for a programmer to change anything.
>Kurt
>
>Neue Partie
>[D]8/1pp5/p1p3pp/5k2/5P1P/5KP1/PPP1R3/5r2 w - - 0 1
>
>Analysis by Fritz 8: (P4 1.8/32 MB hash)
>
>1.Tf2 Tg1 2.a4 g5 3.fxg5 hxg5 4.Th2 g4+ 5.Kf2 Tc1 6.Ke3 Tg1 7.Kf2
>  ²  (0.31)   Tiefe: 7/17   00:00:00  25kN
>  =  (0.00)   Tiefe: 16/36   00:02:35  90884kN, tb=2
>1.Kg2!
>  =  (0.03)   Tiefe: 16/40   00:03:21  119101kN, tb=2
>  =  (0.03)   Tiefe: 16/40   00:03:21  119101kN, tb=2


 Hi Kurt,

 What are your results with hash 64, 128 and ev. 256?
 Looks like the figures can differ quite a bit...
 I cannot reproduce your results with hash 32, so I guess
 I have to check my settings/parameters etc.

 /s



>
>(Utzinger, MyTown 14.12.2002)
>*******************************************************************************************
>Neue Partie
>8/1pp5/p1p3pp/5k2/5P1P/5KP1/PPP1R3/5r2 w - - 0 1
>
>Analysis by Chess Tiger 14.0:
>
>1.Tf2 Txf2+ 2.Kxf2 Ke4 3.b4 b6 4.a3 a5 5.bxa5 bxa5 6.Ke2 c5 7.Kf2 c4 8.c3 c5
>9.Ke2 a4 10.Kd2
>  =  (-0.12)   Tiefe: 10   00:00:00  170kN
>  =  (-0.08)   Tiefe: 16   00:03:03  68668kN
>
>(Utzinger, MyTown 14.12.2002)
>********************************************************************************************
>Neue Partie
>8/1pp5/p1p3pp/5k2/5P1P/5KP1/PPP1R3/5r2 w - - 0 1
>
>Analysis by Hiarcs 8:
>
>1.Kg2 Td1 2.Te5+ Kg4
>  ²  (0.26)   Tiefe: 1   00:00:00
>  =  (0.16)   Tiefe: 2/5   00:00:00
>1.Tf2 Txf2+ 2.Kxf2 Ke4 3.c3 c5 4.b3 b5 5.b4 h5 6.Ke2 Kd5 7.Kf3
>  =  (0.19)   Tiefe: 2/9   00:00:00
>  =  (0.05)   Tiefe: 11/26   00:00:04  935kN
>1.Kg2 Td1 2.Kh3 Th1+ 3.Kg2 Td1 4.Tf2
>  =  (0.09)   Tiefe: 11/26   00:00:08  1664kN
>  =  (0.07)   Tiefe: 15/34   00:03:41  46562kN
>
>(Utzinger, MyTown 14.12.2002)
>********************************************************************************************
>Neue Partie
>8/1pp5/p1p3pp/5k2/5P1P/5KP1/PPP1R3/5r2 w - - 0 1
>
>Analysis by Junior 7:
>
>1.Kg2 Td1 2.Te7
>  =  (0.05)   Tiefe: 3   00:00:00
>  =  (0.05)   Tiefe: 3   00:00:00
>1.Ke3 Kg4 2.Tg2 Tf3+ 3.Kd4 Txg3 4.Txg3+ Kxg3
>  =  (0.18)   Tiefe: 3   00:00:00
>  ³  (-0.59)   Tiefe: 6   00:00:00  5kN
>1.Kg2 Td1 2.Kf3
>  =  (0.02)   Tiefe: 6   00:00:00  6kN
>  =  (0.00)   Tiefe: 23   00:05:15  297987kN, tb=15
>
>(Utzinger, MyTown 14.12.2002)
>********************************************************************************************
>Neue Partie
>8/1pp5/p1p3pp/5k2/5P1P/5KP1/PPP1R3/5r2 w - - 0 1
>
>Analysis by Nimzo 7.32:
>
>1.Tf2
>  ³  (-0.26)   Tiefe: 1/11   00:00:00
>1.Ke3 Kg4 2.Tf2
>  =  (0.08)   Tiefe: 1/11   00:00:00
>  =  (-0.02)   Tiefe: 3/14   00:00:00
>1.Kg2 Ta1 2.a3 Tb1 3.b3 Kg4 4.Te7 Tc1
>  =  (0.07)   Tiefe: 3/14   00:00:00
>  =  (0.08)   Tiefe: 8/22   00:00:00
>1.Tf2 Txf2+ 2.Kxf2 Ke4 3.b3 h5 4.a3 a5 5.c4 Kf5
>  =  (0.09)   Tiefe: 8/22   00:00:00
>  =  (-0.20)   Tiefe: 9/23   00:00:00
>1.Kg2 Ta1 2.a3 Ta2 3.c3 Ta1 4.Te5+ Kg4 5.Te6 Kf5 6.Te2
>  =  (-0.19)   Tiefe: 9/23   00:00:00
>  =  (0.04)   Tiefe: 15/32   00:01:05  54994kN
>
>(Utzinger, MyTown 14.12.2002)
>********************************************************************************************



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