Author: Stefan Meyer-Kahlen
Date: 01:44:50 02/11/05
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On February 10, 2005 at 12:33:14, William Penn wrote: >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. No, infinite minus 10% is still infinite :-) >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? I would still suggest to use the default setings for this. However if you would like to see more plies you try to set Combinations=None Forward Pruning=5 Selectivity=0 Stefan
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