Author: Uri Blass
Date: 04:09:03 09/22/05
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On September 22, 2005 at 07:00:13, Paul Jacobean Sacral wrote: >On September 22, 2005 at 05:39:07, Mahesh Jeswin wrote: > >>Only Fruit 2.1 seems to find the draw in this position without egtb. >>Any other engine comes close to finding the draw ? >> >>[D] 7k/7P/8/6N1/7K/8/8/8 w - - 0 1 > >I didn't find any! Good test position. At least engines which do not use egtb in >the search, should probably have code for that type of position, or a "no >progress" rule. Engines quickly reach depths of 20+ in this position. With a >material balance of +4 and no progress at all after 20 plies, it is most >probably a dead draw. I think that could be a "safe" rule, if the opponent has >only the king (maybe even 10 plies are enough already, in those cases). > >Yours truly Paul J. Sacral Fruit does not see 0.00 and I am surprised that it can see close to 0.00 score New game, 7k/7P/8/6N1/7K/8/8/8 w - - 0 1 Analysis by Fruit 2.1: 1.Kg3 ² (0.35) Depth: 1/1 00:00:00 1.Kg4 ² (0.36) Depth: 1/1 00:00:00 Note that Fruit2.0 is even better here and can see 0.00 score New game, 7k/7P/8/6N1/7K/8/8/8 w - - 0 1 Analysis by Fruit 2.0: 1.Kg3 = (0.00) Depth: 1/1 00:00:00 I did not know that fruit had that knowledge because I did not think that it is an engine that has special knowledge for a case that almost never happen considering the fact that it has no big evaluation. Uri
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