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Subject: Re: Programming: speed of my engine.

Author: Renze Steenhuisen

Date: 08:08:13 03/17/04

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On March 16, 2004 at 16:56:02, Volker Böhm wrote:

>
>>r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq - 0 1
>>PerftPly = 4
>>nCount = 4185552
>>nps = 1260708
>
>I gave this one a try as it has a some nodes to get an accurate time
>measurement.
>Ralf (Cheetah) and me (IceSpell) just startet to "play" with different kind´s of
>move generators and we have built one from the scratch.
>It takes about 1sec (1081 ms) for 4085603 nodes (only depth 4 perft not the sum
>of depth 1-4). The CPU is a 1,3 GHZ Celeron which should be about 1,5-1,6 times
>less fast than yours (for chess).
>But we don´t have fully built attack-tables, only with pawns, knights and kings
>now (those were simple to implement).
>
>How do you build your attack-tables? incrementally? What is the data-structure
>for them?

DarkSight:
perft(4) = 4085603      time = 1.25sec.

Cheers



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