Search found 6575 matches

by Uri Blass
Sat May 19, 2007 12:01 am
Forum: Computer Chess Club: General Topics
Topic: Is this positions drawn ??
Replies: 73
Views: 30162

Re: Is this positions drawn ??

PauloSoare wrote:Thanks Uri, wen you wrote about to found a possible zugzuwang in the position, I stay confused.

Paulo Soares
The fact that I did not find a zugzwang does not prove that there is no zugzwang because I did not check all possibilities.


Uri
by Uri Blass
Fri May 18, 2007 11:50 pm
Forum: Computer Chess Club: General Topics
Topic: Is this positions drawn ??
Replies: 73
Views: 30162

Re: Is this positions drawn ?? Save us all some trouble

Uri Blass, save us all some trouble and look up this position in a text book. You are relying too much on your computer and your real chess skill will be zerorised. Lemme give you a hint so that you can use the search function in google - - rook , queen, pawns, fortress Even if it is written in a t...
by Uri Blass
Fri May 18, 2007 11:29 pm
Forum: Computer Chess Club: General Topics
Topic: Proposal for Rybka team playing in Leiden
Replies: 17
Views: 6308

Re: Proposal for Rybka team playing in Leiden

How about just using a strong dual core mashine! this would even the odds for the other engines and make a good contest. I have played several matches with Rybka and other engines and have only found it's endgames to be weak. If this weakness is taken away, then this is very bad for other engines :...
by Uri Blass
Fri May 18, 2007 10:45 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Movei00_8_403 and Movei00_8_418 in Chess960
Replies: 46
Views: 12218

Re: Movei421 vs Fruit20 ended 25.5 to 24.5

Movei421 with progress 10 10 10 at 2/1 time control plays better than with 5/1 and 10/1 time control :shock: Engine Score Mo Fr S-B 1: Movei00_8_421 25.5/50 ·················································· 0===101=0100=0=011=1==1=00=01011=00==1=11001101101 624.75 2: Fruit20 24.5/50 1===010=1011=1...
by Uri Blass
Fri May 18, 2007 10:39 pm
Forum: Computer Chess Club: General Topics
Topic: Is this positions drawn ??
Replies: 73
Views: 30162

Re: ComputerChess is bad for you !!

If you cannot recognise this as a draw get out your chess books and look up endings that are drawn. You are relying too much on your computers and you need to go back to the basics. I can recognize that I am almost sure that it is a draw. I cannot recognize it as a draw without doubt. Chess books a...
by Uri Blass
Fri May 18, 2007 10:36 pm
Forum: Computer Chess Club: General Topics
Topic: Is this positions drawn ??
Replies: 73
Views: 30162

Re: Is this positions drawn ??

Hi, the position is a typical fortress (and draw). Topalov and Mamedyrov know this, engines don't. Tobias Indeed, it's a trivial draw. Terry I disagree about trivial. I believe it is a draw but in order to prove that it is a draw you need to tell me a strategy for black were to put the king and roo...
by Uri Blass
Fri May 18, 2007 10:29 pm
Forum: Computer Chess Club: General Topics
Topic: Is this positions drawn ??
Replies: 73
Views: 30162

Re: Is this positions drawn ??

Also as a general rule.When engines see a big plus from the start of evalution to the end of evalution but it has not grown, even decresed after some time you can be pretty sure no progress can be made. This is not correct. It is possible that they simply do not see the right plan that is too long ...
by Uri Blass
Fri May 18, 2007 10:26 pm
Forum: Computer Chess Club: General Topics
Topic: Is this positions drawn ??
Replies: 73
Views: 30162

Re: Is this positions drawn ??

zugzwang is position when you lose because it is you to move. I cannnot give example from this position but I can give simple example of different position. White is in zugzwang [D]8/8/8/8/5Kp1/6Pk/8/8 w - - 0 1 Note that the fact that I did not see a possible zugzwang in the first position is no pr...
by Uri Blass
Fri May 18, 2007 10:04 pm
Forum: Computer Chess Club: General Topics
Topic: released: micro-Max 4.8w
Replies: 14
Views: 6207

Re: released: micro-Max 4.8w Feature Request

Dann Corbit wrote:Feature request for the Winboard interface part:
setboard
My guess is that it is impossible with an engine that is so small.
by Uri Blass
Fri May 18, 2007 9:59 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Perishing Perft !
Replies: 34
Views: 22627

Re: Perishing Perft !

Quick Perft is also very fast IIRC but on same Mac (compiled on the fly with a simple gcc -O3) it cannot complete without a hash table and takes 25 secs just to reach perft 7. Yes, a hash gives an enormous speed-up in perfting, where, unlike alpha-beta trees, you are sure to walk every existing tra...