Author: Robert Hyatt
Date: 17:32:32 06/28/01
Go up one level in this thread
On June 28, 2001 at 15:37:24, Joshua Lee wrote: >> >>That was indeed sad. Most programs of the day could not find those mates. >>Speeds of 100 nodes per second were pretty fast back then. Chess 4.x only >>did 2600 nodes per second as it won most of the 1970's events... > > >How effective were those 2600 nodes though? Pioneer took several Hours (3:45:00) >on a Nadareishvili Study , most programs solve this with millions of nodes >instead of 200 like Pioneer! > Those nodes (chess 4.x) were very similar to today's nodes. Don't believe the Pioneer analysis. Berliner proved that it was mostly fabrication and fake. Little "meat". >How fast would Chess 4.x be on todays hardware? Can someone get a copy a test it>against Crafty or some other program? It was written in CDC cyber assembly language (Compass). Won't run on today's machines. > >I mentioned Ostrich but i was confused i am really looking for information about >Chaos. Chaos played some extreemly impressive moves for instance: > >Chaos - Chess 4.0 > >[D] rq2k2r/3n1ppp/p2bpnb1/8/Np1N4/1B3PP1/PP2Q2P/R1BR2K1 w kq - 0 1 > >16.Nxe6!! Chaos took 587 seconds to find this move it was searching 4500 nodes >every 3 minutes or about 25 a second. >Hiarcs 7.32 found this at 10/30 ply and 56.595.000 nodes 17:36 >Gandalf found this at 7ply 5 seconds 450,000 nodes > Neither matters. Chaos and Gandalf are doing it for positional reasons, not tactical reasons. I was there to see Chaos play that. It also played the same game against Nuchess a few years later (successor to chess 4.x). >Chaos was on a UNIVAC 1110 it looked at only 14,675 nodes this was on an >extreemly slow computer by todays standards and it would probably take a second. I don't ever remembering them running on a univac machine. They used an IBM or Amdahl at every event I remember seeing them in. If you are interested in a specific year, I am pretty sure I have every ACM tournament booklet...
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