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

Author: Mark Young

Date: 22:19:30 08/03/00

Go up one level in this thread


On August 04, 2000 at 00:59:42, Chessfun wrote:

>On August 04, 2000 at 00:22:21, Mark Young wrote:
>
>>Fritz 6a will play the correct move but needed more time, but if you set the
>>tablebase depth to 0 in Fritz 6a it will correct this problem, but at the cost
>>of search speed because of the amount of tablebase hits to the harddrive. All
>>examples below.
>
>>1.Nc4 Nxc4 2.c7 Ne3 3.a7 Ra3 4.Kb5 Nf5 5.Kb4 Nd6
>>  -+  (-2.28)   depth: 14/34   00:00:36  29396kN, tb=444
>>1.Kxb6
>>  -+  (-2.25)   depth: 14/34   00:00:40  32722kN, tb=562
>
>Analysis by Fritz 6:
>1.Nc4 Nxc4 2.c7 Ne3 3.a7 Ra3 4.Kb5 Nf5 5.Kb4 Nd6
>  -+  (-2.44)   Depth: 14/32   00:01:42  26500kN, tb=302
>1.Nc4 Nxc4 2.c7 Ne3 3.a7 Ra3 4.Kb5 Nf5 5.Kb4 Nd6
>  -+  (-2.44)   Depth: 15/35   00:03:47  58562kN, tb=791
>1.Kxb6
>  -+  (-2.41)   Depth: 15/35   00:05:25  80105kN, tb=1148
>
>Are your tablebases on your hardrive?.
>This 40 secs is FAST. On my cel 433 takes 5:25 to see it.
>But why is yours at depth 14/34 mine at 15/35?
>That was with H732 tablebase as was using the F6 disc in
>my other tourney as the tablebase, but now curious so With F6
>Original disc installed using Tablebase from the CD.
>I get slightly faster but much fewer tablebase hits.
>Maybe it's just my E drive speed compared to my D which has just broken.
>But both these results were with the CD in my E drive, both setup from
>new position.

My tablebases are on my harddrive and I have downloaded almost the full set of 5
men EGTB's.

>
>
>Analysis by Fritz 6:
>1.Nc4 Nxc4 2.c7 Ne3 3.a7 Ra3 4.Kb5 Nf5 5.Kb4 Nd6
>  -+  (-2.12)   Depth: 14/30   00:01:37  28268kN, tb=23
>1.Nc4 Nxc4 2.c7 Ne3 3.a7 Ra3 4.Kb5 Nf5 5.Kb4 Nd6
>  -+  (-2.31)   Depth: 15/33   00:03:52  66116kN, tb=82
>1.Kxb6
>  -+  (-2.28)   Depth: 15/33   00:04:50  81431kN, tb=170
>
>>Analysis by Fritz 6: (tablebase depth set to 0)
>How do you change the tablebase depth?.

In engine parameters.

>
>Thanks.



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