Think Again! Thinker > Rybka BETA!

[Ovyron]

From:
http://www.talkchess.com/forum/viewtopic.php?t=20302



Passive Thinker 5.1C had a great performance under my conditions, and Bayeselo says it's 1 ELO point stronger than Rybka BETA, but just look at the number of decided games, 87% were decided, so I'd pick Thinker over Rybka BETA any day (though I know this is statistically meaningless.)

Settings
Athlon 2.1Ghz 32bit
ChessPartner GUI
1'+ 7" with ponder off
64MB hash each engine
No tablebases
2 Rounds Gauntlet each Thinker and one match between Thinkers, 60 games
No books for first two rounds, forced one move for other two rounds

Code: Select all

Think Again
2008.03.17 - 2008.03.28
                                 Score     Thin AThi Rybk Frui Toga Glau Spik Naum brig
----------------------------------------------------------------------------------------
 1: Thinker                    20.0 / 32   XXXX 1111 1010 0110 =010 01== 10=1 1110 1110
 2: ActiveThinker               9.5 / 32   0000 XXXX 0=00 0010 1010 001= 001= =0=0 1100
 3: Rybka 1.0 Beta 32-bit       5.5 /  8   0101 1=11 XXXX .... .... .... .... .... ....
 4: Fruit 2.3.1                 5.0 /  8   1001 1101 .... XXXX .... .... .... .... ....
 5: Toga II 3.1.2SE JA Chekov   4.5 /  8   =101 0101 .... .... XXXX .... .... .... ....
 6: Glaurung 2.0.1              4.5 /  8   10== 110= .... .... .... XXXX .... .... ....
 7: Spike 1.2 Turin             4.0 /  8   01=0 110= .... .... .... .... XXXX .... ....
 8: Naum 2.0                    4.0 /  8   0001 =1=1 .... .... .... .... .... XXXX ....
 9: bright-0.2c                 3.0 /  8   0001 0011 .... .... .... .... .... .... XXXX
----------------------------------------------------------------------------------------
60 games: +35 =9 -16

Ratings of participants so far:

Code: Select all

Rank Name                        Elo    +    - games score oppo. draws 
   1 Thinker                    2847   99   94    32   63%  2756   13% 
   2 Rybka 1.0 Beta 32-bit      2846   92   86    36   67%  2738   22% 
   3 Toga II 3.1.2SE JA Chekov  2819   90   86    36   61%  2741   22% 
   4 Spike 1.2 Turin            2784   87   86    36   56%  2745   28% 
   5 Glaurung 2.0.1             2779   88   86    36   54%  2746   25% 
   6 bright-0.2c                2769   91   90    36   53%  2747   11% 
   7 Fruit 2.3.1                2707   87   90    36   43%  2754   19% 
   8 Naum 2.0                   2707   86   89    36   43%  2754   19% 
   9 ActiveThinker              2637   94  103    32   30%  2782   16% 

PGN of the 60 games:

http://www.zshare.net/download/96766121acbc8c/

In conclusion, Thinker is my new favorite engine regarding playing style , it was a great surprise. Next tourney will feature the latest Bright: 0.3a.

[swami]

Just 1 elo ahead, so you need more games to prove that Thinker is better.

[Ovyron]

Indeed, these engines will play 6 games against the new Bright, so I don't think I will get accurate any time soon. However, I think the thread title is catchy