Author: Don Dailey
Date: 18:58:46 01/25/99
Go up one level in this thread
On January 25, 1999 at 10:54:04, Albrecht Heeffer wrote: >On January 25, 1999 at 08:24:14, Fernando Villegas wrote: > >>Hi: >>I have been amazed a little bit by the fact that in the long thread about bionic >>as a clone or not nobody seems to have given data about how much Bionic is >>really something new or not, to begin with. The only thing that has been said >>about his presumed novelty is Dgeordge Vidanovic's statement that it is new; >>only thing that has been said about his presumed clone quality is the afirmation >>by Bob that a program that has changed only 1% of the code cannot be considered >>something new. Well, which are the data to support one or the other statement? > >Hello all, > >It seems like a good time to introduce myself. I'm part of the Bionic team. >I provided the hardware, worked through the test sets, added the end-game >databases and did some optimisations. I was present at the Open Dutch during >the first weekend. > >Let me first clarify some things: > >1) You want data? There is a complete website explaining a lot of details >about Bionic. Please consult http://www.impakt.be/bionic/ There is >also explained what was added and changes to the Crafty version >we started from. > >2) All this was available before the start of the Open Dutch championship. >We did not hide anything. Bionic Impakt is for a large part based on >Crafty code, originally 9.26 and later based on 15.20. We never looked at >Crafty 16.x as some people suggested. If you want to compare, you'd >better use version 15.20 > >3) Hans Secelle is a good chess player. He added a lot of knowledge in >the prescan routines. The effect is most dramatic on the positional >problems of the Louget II test. Bionic scores 11 of the 14 problems, >Crafty 15.20 only six! The results on all tests we have perfomed are >on the website, including comparisions with Crafty 15.20 > >4) Bionic Impakt played on the same hardware using the same binary >during the first weekend and the second weekend. The fact that Bionic >scored better during the first weekend of the Open Dutch Championship >is a conincidence. However is seems that a Crafty-derived Bionic that plays >well is less acceptable by some than a Crafty-derived Bionic that score >badly. Also, discussion starts again after Bionic wins from Crafty >at the Winboard tournament. > >5) The claim by Robert Hyatt that Bionic plays the same moves than >Crafty 16.1 is simply not true: > >>Vincent Diepeveen sent me the games from the first weekend of play. I picked >>3 as that was all the time I had. I had crafty search each (on my quad P6/200 >>which I figured was slower than the machine they used by a significant amount.) >>I had crafty search for 10 minutes per move, and if it chose the same move >>anywhere between 3 and 8 minutes as they did, I called this a match. I got >>all but one move in those three games. Not a 'perfect' matching scheme, but >>with the parallel search, it is non-trivial even on identical hardware. > >Several people tried this also, including Marcel Van Kervinck and >Johan Havegheer. Marcel played through 513 moves and found that only >406 matched with Crafty 16.1. This test can be verified by anyone who feels >like doing so. We decided to post the complete loggings of the Open Dutch. >You can download them from: http://www.impakt.be/bionic/odc98.htm >You can inspect all setting, timings, moves, evaluations and so on. >If you really want to do this in a scientific way: >- do not use book moves >- categorise chess-evading moves, 'obvious' moves, 'only' moves >- do the same test also with some other program The most scientific way is to send us a copy of the program. It is not commercial (it's illegal to be commercial) and you should send us the source code. But I will be satisfied if you just send the executable. I have a quad pentium and a dual here at work to run my own tests on. Bob and others may also want to see the executable. We don't expect your logs to match 100% but do expect a high corelation. Post this executable with support files on the same web site so we can clear this up for you please. Post all the source code if you want to remove any doubt. - Don >Good luck, > >Albrecht Heeffer
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