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Subject: Re: Crafty 17.11 goes undefeated to win in home brew tournament. <huge post>

Author: Chessfun

Date: 21:24:57 08/03/00

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On August 03, 2000 at 23:52:54, blass uri wrote:

>I do not understand one of Fritz6's moves.
>
>[D]8/8/PnP3k1/2K5/7p/3rN3/8/8 w - - 0 1
>
>Fritz6 played 75.Nc4 and lost against Junior5 when my Fritz6 light with
>tablebases plays 75.Kxb6 with a draw.
>
>Is it a tablebase bug in Fritz6?
>
>Uri

Hi Uri,
      Mark eval at that move was 75. Nc4 {-2.31/11 10}
My Fritz 6 Light prefers Ng4 though thats without Tb/s.

On that subject how do I tell Fritz 6 to look for tablebases
now at drive E instead of where they were D. As my D drive seems
to have failed but I have a back-up on E.

8/8/PnP3k1/2K5/7p/3rN3/8/8 w - - 0 1

Analysis by Fritz 6:
1.Kxb6! Rxe3 2.c7 Re8 3.Kb7 h3 4.c8Q Rxc8
  ³  (-0.37)   Depth: 10/21   00:00:01  341kN
1.Kxb6!
  ³  (-0.69)   Depth: 11/18   00:00:02  635kN
1.Kxb6 Rxe3 2.c7 Re8 3.Kc6 h3 4.Kd7 Rh8 5.a7 h2
  -+  (-4.44)   Depth: 11/21   00:00:02  774kN
1.Ng2
  -+  (-4.41)   Depth: 11/23   00:00:03  1045kN
1.Ng2 Rb3 2.Nxh4+ Kf6 3.a7 Na8 4.Ng2 Ra3 5.c7 Rc3+
  -+  (-2.72)   Depth: 11/26   00:00:15  4127kN
1.Nc4
  -+  (-2.69)   Depth: 11/26   00:00:25  6835kN
1.Nc4 Nxc4 2.c7 Ne3 3.a7 Ra3 4.Kb5 Nf5 5.Kb4 Nd6
  -+  (-2.31)   Depth: 11/26   00:00:26  7367kN
1.Nc4 Nxc4 2.c7 Ne3 3.a7 Ra3 4.Kb5 Nf5 5.Kb4 Nd6
  -+  (-2.31)   Depth: 12/29   00:00:33  9295kN
1.Nc4 Nxc4 2.c7 Ne3 3.a7 Ra3 4.Kb5 Nf5 5.Kb4 Nd6
  -+  (-2.31)   Depth: 13/28   00:00:51  13987kN
1.Nc4 Nxc4 2.c7 Ne3 3.a7 Ra3 4.Kb5 Nf5 5.Kb4 Nd6
  -+  (-2.12)   Depth: 14/32   00:02:15  32601kN
1.Nc4 Nxc4 2.c7 Ne3 3.a7 Ra3 4.Kb5 Nf5 5.Kb4 Nd6
  -+  (-2.31)   Depth: 15/33   00:03:47  57683kNBird,S - Fritz 6

Analysis by Fritz 6 Light:
1.Kxb6 Rb3+ 2.Ka7 Rxe3 3.c7 Re8 4.Kb7 Re7 5.a7
  -+  (-1.69)   Depth: 8/19   00:00:01  323kN
1.Kxb6!
  µ  (-1.37)   Depth: 9/19   00:00:01  361kN
1.Kxb6! Rb3+ 2.Ka7 Rxe3 3.c7 Re8 4.Kb7 h3
  =  (-0.25)   Depth: 9/19   00:00:01  396kN
1.Kxb6 Rxe3 2.c7 Re8 3.Kb7 h3 4.c8Q Rxc8 5.Kxc8 h2
  ³  (-0.44)   Depth: 10/21   00:00:01  540kN
1.Kxb6--
  µ  (-0.75)   Depth: 11/18   00:00:02  686kN
1.Kxb6 Rxe3 2.a7 Re8 3.Kb7 h3 4.a8Q
  µ  (-0.97)   Depth: 11/23   00:00:03  1066kN
1.Kxb6!
  ³  (-0.66)   Depth: 12/25   00:00:08  2751kN
1.Kxb6! Rxe3 2.a7 Re8 3.Kb7 h3 4.a8Q Rxa8 5.Kxa8 h2
  =  (0.00)   Depth: 12/26   00:00:09  3140kN
1.Kxb6 Rxe3 2.a7 Re8 3.Kb7 h3 4.a8Q Rxa8 5.Kxa8 h2
  =  (-0.19)   Depth: 13/25   00:00:15  5543kN
1.Kxb6 Rxe3 2.c7 Re8 3.Kb7 h3 4.c8Q Rxc8
  =  (0.00)   Depth: 14/28   00:00:32  12009kN
1.Kxb6--
  ³  (-0.47)   Depth: 15/30   00:01:00  22869kN
1.Kxb6 Rxe3 2.c7 Re8 3.Kb7 h3 4.c8Q Rxc8 5.Kxc8 h2
  -+  (-6.19)   Depth: 15/31   00:01:31  37373kN
1.Ng4
  -+  (-6.16)   Depth: 15/33   00:03:49  93524kN

(Bird, Scarb 04.08.2000)

Thanks.



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