Search found 6401 matches

by Uri Blass
Fri Apr 06, 2007 8:41 am
Forum: Computer Chess Club: General Topics
Topic: Strange analysis by Chess Tiger 2007
Replies: 10
Views: 4962

Re: Strange analysis by Chess Tiger 2007

I believe that extensions is not the only problem here and chess tiger is simply not reliable tool for analysis because it is a preprocessor that means that it can evaluate the same position in different way dependent on the root position.

Uri
by Uri Blass
Fri Apr 06, 2007 6:02 am
Forum: Computer Chess Club: General Topics
Topic: is there a test suite for avoiding opening traps
Replies: 0
Views: 1807

is there a test suite for avoiding opening traps

I think it may be interesting to have a test suite of avoiding opening traps. Here is an example for an opening trap that many program fall into it. It is based on the following miniature in one of my correspondence games when using database is allowed but using engines is not allowed. My opponent b...
by Uri Blass
Fri Mar 30, 2007 11:50 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: SEE on non-capture moves in main search
Replies: 62
Views: 66439

Re: SEE on non-capture moves in main search

For the non-capturing moves after the hash move and killers, history move ordering performs better than no move ordering, as expected. But trying to refine this by using SEE values does not work. I have tried to sort the moves into two groups, first searching non-captures with SEE value zero ordere...
by Uri Blass
Thu Mar 08, 2007 9:15 pm
Forum: Computer Chess Club: General Topics
Topic: so what is a fair GM handicap vs Rybka?
Replies: 54
Views: 117823

Re: so what is a fair GM handicap vs Rybka?

Maybe none of the above. Give the engine a time handicap and then we get a real game of Chess. I agree. The best handicap is to cut the computer’s time in 1/2 or maybe 1/4. I disagree. I am even not sure if this is a handicap for the computer because the human can think less on the computer time. r...
by Uri Blass
Thu Mar 08, 2007 7:22 am
Forum: Computer Chess Club: General Topics
Topic: so what is a fair GM handicap vs Rybka?
Replies: 54
Views: 117823

Re: so what is a fair GM handicap vs Rybka?

if you are 1800, rook odds is about an even match at 5 minutes per game. if you are 2000, knight or bishop sounds about right. You can not the smallest tactical mistake against engines rated 3000 and higher. One really needs to understand what 3000 means before club players try there hand. Lucky fo...
by Uri Blass
Thu Mar 08, 2007 7:04 am
Forum: Computer Chess Club: General Topics
Topic: so what is a fair GM handicap vs Rybka?
Replies: 54
Views: 117823

Re: so what is a fair GM handicap vs Rybka?

if you are 1800, rook odds is about an even match at 5 minutes per game. if you are 2000, knight or bishop sounds about right. You can not the smallest tactical mistake against engines rated 3000 and higher. One really needs to understand what 3000 means before club players try there hand. Lucky fo...
by Uri Blass
Wed Mar 07, 2007 3:42 pm
Forum: Computer Chess Club: General Topics
Topic: so what is a fair GM handicap vs Rybka?
Replies: 54
Views: 117823

Re: so what is a fair GM handicap vs Rybka?

My opinion is that it is even impossible to do it without a knight and when you talk about a queen I am simply sure about it. You have seen all these predictions, or claims of the past to turn out wrong, sooner or later. It isn't logical to make another claim of the same type. I didn't claim that i...
by Uri Blass
Wed Mar 07, 2007 2:42 pm
Forum: Computer Chess Club: General Topics
Topic: so what is a fair GM handicap vs Rybka?
Replies: 54
Views: 117823

Re: so what is a fair GM handicap vs Rybka?

it will never be possible for engines to give GMs queen-odds. Never say never. :roll: It sounds like opinions from the past, like "Chess computers will never reach club player level." After that has turned out wrong: "But a chess program will never beat an IM..." (etc.) Imagine somebody would have ...
by Uri Blass
Wed Mar 07, 2007 2:38 pm
Forum: Computer Chess Club: General Topics
Topic: so what is a fair GM handicap vs Rybka?
Replies: 54
Views: 117823

Re: so what is a fair GM handicap vs Rybka?

Maybe none of the above. Give the engine a time handicap and then we get a real game of Chess. I agree. The best handicap is to cut the computer’s time in 1/2 or maybe 1/4. I disagree. I am even not sure if this is a handicap for the computer because the human can think less on the computer time. r...
by Uri Blass
Wed Mar 07, 2007 12:36 pm
Forum: Computer Chess Club: General Topics
Topic: so what is a fair GM handicap vs Rybka?
Replies: 54
Views: 117823

Re: so what is a fair GM handicap vs Rybka?

Maybe none of the above. Give the engine a time handicap and then we get a real game of Chess. I agree. The best handicap is to cut the computer’s time in 1/2 or maybe 1/4. I disagree. I am even not sure if this is a handicap for the computer because the human can think less on the computer time. r...