Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: What is the most difficult MATE to find for a computer program ???

Author: David Rasmussen

Date: 09:29:08 12/27/00

Go up one level in this thread


On December 27, 2000 at 10:29:34, Gian-Carlo Pascutto wrote:

>On December 27, 2000 at 09:43:05, Vincent Diepeveen wrote:
>
>>
>>[D]5n2/B3K3/2p2Np1/4k3/7P/3bN1P1/2Prn1P1/1q6 w - - 0 1 mate in 30
>>
>>Diep needs 10k nodes and 0 seconds to find it.
>>
>>How about the programs you have over there, do they need the same amount
>>of nodes?
>
>Sjeng: prove
>
>Max time to search (s): 120
>
>P: 0 D: 100000000 N: 27717 S: 27716 Mem: 0.85M Iters: 758
>This position is WON.
>PV: e3g4 e5f5 g4h6 f5e5 h6f7 e5f5 f7d6 f5e5 f6g4 e5d5 g4e3 d5e5 d6f7 e5e4 f7g5
>e4e5 g5f3 e5e4 f3d2 e4e5 d2f3 e5e4 f3g5 e4e5 g5f7 e5e4 f7d6 e4e5 e3g4 e5d5 g4f6
>d5e5 d6f7 e5f5 f7h6 f5e5 h6g4 e5f5 g4e3 f5e5 f6g4 e5e4 g4f2 e4e5 f2d3 e5e4 d3f2
>e4e5 f2g4 e5e4 g4f6 e4e5 e3c4 e5f5 c4d6 f5e5 f6g4 e5d5 c2c4
>
>The 27K nodes is tricky as most of them aren't really searched. This
>takes less than a second on my Cyrix120.
>
>--
>GCP

How on earth can you guys find this so fast?



This page took 0.01 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.