Author: Mark Young
Date: 19:28:26 06/24/99
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On June 24, 1999 at 20:04:29, James T. Walker wrote: >Hello, >Another way to prove it retains the hash tables is to turn off the permanent >brain (Pondering). Then when playing a game, notice the depth of search and how >long it takes to finda a move. When you play a move you will notice that Hiarcs >does not start it's search a 1 ply but may start its search at 5/8 or something >like that with 00:00:00 time showing taken for search. This indicates it is >using information from a previous search stored in the hash tables. This is why >Hiarcs has an advantage in engine/engine testing. The Pondering is turned off >for both engines but since Hiarcs does not reset it's hash tables it has >information left over to start the next search. But notice it's opponents >(Fritz,Junior,Nimzo) have to start every search from ply 1 even when the >predicted move is made. >Jim Walker I have not seen this, but I have not looked for it in engine vs engine games to see if it does retain hash from the previous search. To be honest I don't see this giving Hiarcs7 such a big advantage over the other programs at longer time controls, not to the extent that I see from other results that have been posted. In my testing so far it has lost the blitz match I played at 10 secs. a move. It did crush Fritz 5, but junior 5 is giving it all it can handle at 30 secs a move, and 90 secs a move in the head to head match that I am playing now. And a quick note to Uri, Unless Hiarcs 7.32 is weaker then Hiarcs 7.01 or just got "lucky" I don't see how from the games so far... why Hiarcs 7.01 crushed Junior 5 in the SSDF testing.
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