Author: William Penn
Date: 09:33:14 02/10/05
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On February 09, 2005 at 03:57:36, Stefan Meyer-Kahlen wrote: >On February 07, 2005 at 17:04:22, James C. Logan wrote: > >>In the "infinite analysis" mode under Fritz 8 interface (version 19), as well as >>the Chessbase 9 interface (version 5), Shredder 9 seems to get very deep, very >>fast. Faster than Shredder 8. I do not look at nodes/sec, only the depth. I have >>not found an instance yet where the two programs differ in the suggested top >>move, but I am not looking too hard yet. I also have not looked over the PV yet >>to see if I like it better than S8. >> >>As for games, I have tried a quick informal run in Arena 1.1 of Shredder 9 vs. >>Shredder 8. Naturally, under this interface, I cannot use Shredder books. I >>played 21 games of Game/3 minute and Shredder 8 trounced Shredder 9. I moved the >>time control up to Game/5, and a small number of games also went to Shredder 8. >>I am now going to try using the Shredder interface - I will do a more controlled >>experiment overnight. >> >>I can say that in all that I have seen, Shredder 8 uses the clock more >>effectively than Shredder 9. Maybe that is an unfair statement, but S9 is always >>behind on the clock compared to S8, winning or losing. >> >>These are only first impressions - don't take them too seriously yet. > > >Thanks for your impressions. > >If you think that Shredder 9 is playing to slow you can set the engine option >"Time Usage" to a value < 100. The value is given in percent, so if you set it >to 90 Shredder will on average think 10% less for his moves. > >Stefan I tried that, and "Time Usage" seems to have no effect in infinite analysis mode. Is there any way to speed up infinite analysis? For example, if we ordinarily achieve 30 plys in 4 hours, it would be nice to have a setting that would go to 30 plys in 1 hour. I understand that it would be more likely to overlook important moves, but it could be useful nevertheless. Would changing the "Knowledge-Speed" setting achieve this properly? If so, what value would you suggest? Thanks! WP
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