Search found 3768 matches

by lkaufman
Sun Jul 10, 2011 2:57 am
Forum: Computer Chess Club: General Topics
Topic: Ideas from other engines ok?
Replies: 27
Views: 4817

Re: Ideas from other engines ok?

Even identical engines won't always play the same move in timed play, or even in fixed depth play if MP is involved. Of course two strong engines will play the same move more often than not. Let's say that two unrelated strong engines (for example SF and Rybka) play the same move in timed play 70% ...
by lkaufman
Sat Jul 09, 2011 10:50 pm
Forum: Computer Chess Club: General Topics
Topic: Ideas from other engines ok?
Replies: 27
Views: 4817

Re: Ideas from other engines ok?

Let's assume that someone want's to write an engine using the ideas of other engines while absolutely copying no code (not even in structure). Let's assume they can also achieve certain tricks as another engine but using a different means to achieve it. Is it 1. Legally and WCCC ok 2. Legally ok bu...
by lkaufman
Sat Jul 09, 2011 5:06 am
Forum: Computer Chess Club: General Topics
Topic: Ideas from other engines ok?
Replies: 27
Views: 4817

Re: Ideas from other engines ok?

Let's assume that someone want's to write an engine using the ideas of other engines while absolutely copying no code (not even in structure). Let's assume they can also achieve certain tricks as another engine but using a different means to achieve it. Is it 1. Legally and WCCC ok 2. Legally ok bu...
by lkaufman
Fri Jul 08, 2011 2:46 pm
Forum: Computer Chess Club: General Topics
Topic: Ideas from other engines ok?
Replies: 27
Views: 4817

Re: Ideas from other engines ok?

Let's assume that someone want's to write an engine using the ideas of other engines while absolutely copying no code (not even in structure). Let's assume they can also achieve certain tricks as another engine but using a different means to achieve it. Is it 1. Legally and WCCC ok 2. Legally ok bu...
by lkaufman
Fri Jul 08, 2011 4:29 am
Forum: Computer Chess Club: General Topics
Topic: Question for Larry Kaufman
Replies: 23
Views: 4988

Re: Question for Larry Kaufman

I'll try to answer the various questions posed in this thread as well as I can. 1. Of course, Rybka 3 is not 100% new program from Rybka 2.32a, maybe 85% would be a reasonable figure. 2. I never asked for source code, because I wouldn't have been able to understand it anyway. But Vas always explaine...
by lkaufman
Thu Jul 07, 2011 4:08 am
Forum: Computer Chess Club: General Topics
Topic: Extended chess (XChess)
Replies: 13
Views: 3308

Re: Extended chess (XChess)

I think that your idea is overkill, the board is far larger than is reasonable. There is a good case for a larger board and more pieces than in normal chess, but 10x8 or 10x10 boards with bishop+knight and rook+knight extra pieces add quite enough complexity to the game. Last year Don Dailey and I m...
by lkaufman
Thu Jul 07, 2011 3:59 am
Forum: Computer Chess Club: General Topics
Topic: again, Rybka is from fruit? so where is robolito/ippo from?
Replies: 15
Views: 4563

Re: again, Rybka is from fruit? so where is robolito/ippo fr

Get your facts straight instead of joining the massive (Gebels like) campaign led by Bob (Hyatt). Ann is not caught copying from Bob. Ann was only suspected but nobody even after 2 years managed to provide any proof of wrongdoing. In the absence of proofs repeating copyright accusations is nothing ...
by lkaufman
Thu Jul 07, 2011 3:26 am
Forum: Computer Chess Club: General Topics
Topic: Awit-2009
Replies: 13
Views: 4045

Re: MacHack

Yes, I wrote the opening book for MacHack and was also the chief tester. I gave it queen odds with fairly even results. About 20 years ago I visited Richard Greenblatt, who at that time still had an office near M.I.T. I don't know his current status, but perhaps M.I.T. could help you find him.
by lkaufman
Mon Jul 04, 2011 4:36 pm
Forum: Computer Chess Club: General Topics
Topic: Komodo Question
Replies: 4
Views: 901

Re: Komodo Question

Yes, we plan to add tablebase support. From what I've read Gaviota seems to be the preferred option lately, but we are open to advice on this topic.
by lkaufman
Sun Jul 03, 2011 5:31 am
Forum: Computer Chess Club: General Topics
Topic: now after seeing all of this go down can anyone beat Vas
Replies: 46
Views: 8373

Re: now after seeing all of this go down can anyone beat Vas

I do not want to discuss the Rybka/Fruit issue here, but to address some of your points. I added somewhere between 50 and 100 elo just from eval to Rybka from version 2.2 to Rybka 3, the period I worked on Rybka's eval, so clearly eval is worth much more than 20 elo. Rybka's eval was its weak point ...