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New chess engine: Texel
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Adam Hair



Joined: 06 May 2009
Posts: 1639
Location: Fuquay-Varina, North Carolina
PostPost subject: Re: New chess engine: Texel    Posted: Sat Mar 24, 2012 10:31 pm Reply to topic Reply with quote
Don wrote:
mar wrote:
petero2 wrote:
Thanks Martin

I know +140 sounds impressive, but I believe there is some unknown effect in the test setup that is responsible for this. A 2X speed increase should not be worth more than 70 elo max.

At first I suspected java startup time and time before the JIT compiler had optimized the java bytecode. However I use cutechess-cli to run the tests, and it doesn't restart the engines between games, so this effect should only exist for the first game.

Yes some say it's 50 elo for doubling, most say 70 and some say it's about 100.
Anyway i think even if it's less than 140 at long TC, even 70, it's still impressive.
I recently fixed a couple of nasty bugs but could not improve more than 10 Smile
So fingers crossed to surpass Fruit 2.1!


There is not fixed ELO for doubling, it depends on the level you start from and the program itself. If you are doing 2 ply searches doubling the time will add 200 ELO or more. The ELO gain is reduced as you go deeper. I think this is somewhat offset with modern programs which get more out of a doubling that programs of 10 years ago.


IMHO, your description is definitely correct.
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Subject Author Date/Time
New chess engine: Texel Peter Österlund Sat Mar 24, 2012 1:43 pm
      Re: New chess engine: Texel Martin Sedlak Sat Mar 24, 2012 1:59 pm
            Re: New chess engine: Texel Peter Österlund Sat Mar 24, 2012 2:10 pm
                  Re: New chess engine: Texel Martin Sedlak Sat Mar 24, 2012 2:27 pm
                        Re: New chess engine: Texel Adam Hair Sat Mar 24, 2012 5:36 pm
                              Re: New chess engine: Texel Don Dailey Sat Mar 24, 2012 8:00 pm
                        Re: New chess engine: Texel Don Dailey Sat Mar 24, 2012 7:58 pm
                              Re: New chess engine: Texel Adam Hair Sat Mar 24, 2012 10:31 pm
      Re: New chess engine: Texel Louis Zulli Sat Mar 24, 2012 2:28 pm
            Re: New chess engine: Texel Peter Österlund Sat Mar 24, 2012 4:09 pm
                  Re: New chess engine: Texel Louis Zulli Sat Mar 24, 2012 5:39 pm
                  Re: New chess engine: Texel Louis Zulli Sat Mar 24, 2012 10:36 pm
                        Re: New chess engine: Texel Peter Österlund Sun Mar 25, 2012 8:58 am
                              Re: New chess engine: Texel Louis Zulli Sun Mar 25, 2012 10:10 am
                                    Re: New chess engine: Texel Bill Henry Sun Mar 25, 2012 5:30 pm
      Re: New chess engine: Texel Graham Banks Sat Mar 24, 2012 2:45 pm
      Re: New chess engine: Texel Adam Hair Sat Mar 24, 2012 5:40 pm
      Re: New chess engine: Texel Marco Costalba Sat Mar 24, 2012 6:09 pm
            Re: New chess engine: Texel Peter Österlund Sun Mar 25, 2012 9:00 am
      Re: New chess engine: Texel Graham Banks Sat Mar 24, 2012 6:37 pm
            Re: New chess engine: Texel Graham Banks Sat Mar 24, 2012 7:03 pm
                  Re: New chess engine: Texel Patrick Buchmann Sat Mar 24, 2012 7:15 pm
                        Re: New chess engine: Texel Thomas Lagershausen Sat Mar 24, 2012 7:45 pm
      Re: New chess engine: Texel Adam Hair Sun Mar 25, 2012 12:08 am
            Re: New chess engine: Texel Tony Mokonen Sun Mar 25, 2012 2:46 am
                  Re: New chess engine: Texel Peter Österlund Sun Mar 25, 2012 9:05 am
      Re: New chess engine: Texel fernando Sun Mar 25, 2012 1:41 am
            Re: New chess engine: Texel Jim Ablett Sun Mar 25, 2012 7:24 pm
                  Re: New chess engine: Texel Peter Österlund Sun Mar 25, 2012 7:57 pm
                        Re: New chess engine: Texel Jim Ablett Sun Mar 25, 2012 8:18 pm
                        Re: New chess engine: Texel George Speight Mon Mar 26, 2012 12:04 am
                              Re: New chess engine: Texel Graham Banks Mon Mar 26, 2012 8:11 am
                                    Re: New chess engine: Texel Mike Scheidl Mon Mar 26, 2012 11:03 am
                              Re: New chess engine: Texel Peter Österlund Mon Mar 26, 2012 4:04 pm
                                    Re: New chess engine: Texel Martin Sedlak Mon Mar 26, 2012 10:26 pm
                                          Re: New chess engine: Texel George Speight Thu Mar 29, 2012 4:08 am
                  Re: New chess engine: Texel Adam Hair Sun Mar 25, 2012 9:47 pm
                  Re: New chess engine: Texel George Speight Mon Mar 26, 2012 7:36 am
      Re: New chess engine: Texel E Diaz Sun Mar 25, 2012 9:13 am
      Re: New chess engine: Texel E Diaz Mon Mar 26, 2012 9:51 am
      Re: New chess engine: Texel Thorsten Czub Tue Mar 27, 2012 9:28 pm
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