CCRL update (28th April 2007)

[Graham Banks]

The April 28th update of the CCRL Rating Lists and Statistics is now available for viewing at:
http://www.computerchess.org.uk/ccrl/4040/

The links to the various rating lists can be found just beneath the default Best Versions list.
For example there is a 32-bit Single CPU list.

Our standard testing is at 40 moves in 40 minutes repeating while our current blitz testing is at both 40 moves in 4 minutes repeating and 40 moves in 12 minutes repeating, all adjusted to the AMD64 X2 4600+ (2.4GHz).

Our team of active testers currently includes:
Graham Banks, Ray Banks, Shaun Brewer, Kirill Kryukov, Dom Leste, Tom Logan, Andreas Schwartmann, Charles Smith, George Speight, Chris Taylor, Chuck Wilson and Gabor Szots.

We remain on the lookout for a few more testers to help, so please contact one of us if you're interested.


40/40 Notes

1,208 games were added to our 40/40 database this week, making a total of 56,713 games.
A big thanks to all testers as usual.

Many engines on our list have few games and in many cases their ratings are likely to fluctuate (markedly for some) until a lot more games are played. Therefore no conclusions should be drawn about their strength yet.
To illustrate this point, when an engine has 200 games played, the error margin is still approximately +/-40 ELO, after 500 games +-25 ELO, after 1000 games +-17 ELO and even after 2000 games there is a +-13 ELO error margin!
This of course highlights the importance of looking at other rating lists that are also available in order to draw comparisons and get a more accurate overall picture.

We are not testing Rybka 2.3 at 40/40, preferring to wait for the bugfixed Rybka 2.3.2 to be released.

As we have just started testing both Loop 13.6 and Chess Tiger 2007.1, they don't yet have enough games to warrant a mention.


4CPU Engines
3105 - Rybka 2.2 64-bit 4CPU
3045 - Zap!Chess Zanzibar 64-bit 4CPU
2978 - Hiarcs 11.1 4CPU
2956 - Naum 2.1 64-bit 4CPU
2931 - Deep Shredder 10 64-bit 4CPU
2921 - Deep Junior 10 4CPU
2920 - Deep Fritz 10 4CPU
2860 - Glaurung 1.2.1 64-bit 4CPU


2CPU Engines
3079 - Rybka 2.1 64-bit 2CPU
3048 - Rybka 2.2 64-bit 2CPU
3029 - Zap!Chess Zanzibar 64-bit 2CPU
2931 - Hiarcs 11.1 2CPU
2928 - Deep Fritz 10 2CPU
2927 - LoopMP 12.32 2CPU
2915 - Loop 13.5 64-bit 2CPU
2907 - Naum 2.1 64-bit 2CPU
2899 - Deep Junior 10 2CPU
2890 - Deep Shredder 10 64-bit 2CPU
2815 - Glaurung 1.2.1 64-bit 2CPU
2739 - Pharaon 3.5.1 32-bit 2CPU


Single CPU Engines
2999 - Rybka 2.2 64-bit
2910 - Zap!Chess Zanzibar 64-bit
2909 - Hiarcs 11.1
2882 - Fritz 10
2873 - Shredder 10
2871 - Loop 13.5 32-bit (64-bit higher, but not enough games)
2861 - Toga II 1.2.1a (not testing Toga II 1.3x4 yet)
2850 - Spike 1.2 Turin
2848 - Naum 2.1 32-bit (64-bit not tested)
2840 - Fruit 2.2.1
2840 - Junior 10
2803 - Ktulu 8.0
2793 - Chess Tiger 2007 (not enough games for Chess Tiger 2007.1 yet)
2788 - Scorpio 1.84
2775 - Glaurung 1.2.1 Avalanche 64-bit
2762 - CM9000 Enforcer
2761 - CM10th Paralyse
2756 - SmarThink 1.00 32-bit (64-bit higher, but not enough games)
2760 - Scorpio 1.91
2742 - Slow Chess Blitz WV2.1


CCRL Amateur Championship (32-bit 1CPU):
4th Season Division 1 - with only one round remaining, Spike holds a one point lead over both Pro Deo and Scorpio. Pseudo faces certain relegation along with two from Jonny, The Baron and Movei.

4th Season Division 2 - after only four rounds, Alaric has jumped into the early lead just ahead of Trace. Comet is really struggling at the other end.

4th Season Division 3 - after eight rounds, Gosu and Djinn hold the narrowest of leads over Queen and AnMon. Arion lies at the foot of the table.

4th Season Division 4 - will start after the higher divisions are completed.

4th Season Division 5 - will start after the higher divisions are completed.


We have a number of tournaments in progress and most of these can be followed in our public forum.


Blitz Notes

The 40/4 is updated separately to 40/40 with the latest update able to be viewed here:
http://computerchess.org.uk/ccrl/404/


Multi-CPU Engines (both 4CPU and 2CPU)
3078 - Rybka 2.3.1 64-bit 2CPU
3021 - Zap!Chess Zanzibar 64-bit 4CPU
2993 - Hiarcs 11.1 4CPU
2946 - Deep Shredder 10 64-bit 4CPU
2944 - Deep Fritz 10 4CPU
2938 - Naum 2.1 64-bit 4CPU
2925 - LoopMP 12.32 2CPU
2918 - Loop 13.5 64-bit 2CPU
2916 - Deep Junior 10 4CPU
2860 - Glaurung 1.2.1 32-bit 4CPU
2754 - Pharaon 3.5.1 2CPU
2736 - Deep Frenzee 3.0 64-bit 2CPU


Single CPU Engines
3025 - Rybka 2.2n 64-bit
2916 - Hiarcs 11.1
2910 - Loop 10.32f
2872 - Toga II 1.3x4
2869 - Fritz 10
2869 - Loop 13.5
2855 - Shredder 10
2854 - Naum 2.1 64-bit
2850 - Fruit 2.2.1
2848 - Zap!Chess Zanzibar
2843 - Junior 10
2828 - Spike 1.2 Turin
2826 - Chess Tiger 2007.1
2822 - Ktulu 8.0
2761 - CM10th Paralyse
2757 - Glaurung 1.2.1 32-bit (higher than 64-bit!)
2752 - Scorpio 1.91
2741 - Bright 0.1d
2722 - Delfi 5.1
2717 - Pro Deo 1.2
2714 - Slow Chess Blitz WV2.1
2713 - Alaric 704


FRC Notes

Ray tests only those engines that can play FRC through the Shredder Classic GUI.
For FRC the best list to look at is the pure list, and the ratings there are:

2921 - Hiarcs 11.1
2905 - Shredder 10
2893 - Loop 10.32f
2859 - Spike 1.2 Turin
2858 - Fruit 2.2.1
2811 - Naum 2.1
2781 - Glaurung 1.2.1
2673 - Pharaon 3.5.1
2619 - Ufim 8.02
2607 - Movei 0.08.383
2478 - Hermann 1.9
2390 - Aice 0.99.2
2363 - Hamsters 0.2
2362 - Ayito 0.2.994


Stats/Presentation Notes

The LOS stats to the right hand side of each rating list are "likelihood of superiority" stats. They tell you the likelihood in percentage terms of each engine being superior to the engine directly below them.

All games are also available for download through the link given at the top of this post. They can be downloaded by engine or by month.
ELO ratings are now saved in all game databases for those engines that have 150 games or more.

A list of games played this week per engine can be found in the update thread in the CCRL public forum, accessible through the link given at the top of this post.

[Tony Thomas]

I am surprised that you dont have enough games for Deep Sjeng, I would have jumped on it if I were you because of the free 30 day trial.