Author: Chris Carson
Date: 04:49:16 07/23/00
Go up one level in this thread
On July 22, 2000 at 21:00:56, stuart taylor wrote: >On July 22, 2000 at 20:10:36, Chris Carson wrote: > >>On July 22, 2000 at 15:19:50, Amir Ban wrote: >> >>>On July 22, 2000 at 13:41:06, blass uri wrote: >>> >>>>[D]r3rk2/1p6/2p3P1/4nP1p/pP2p3/P1B1NbPB/2P5/5RK1 w - - 0 1 >>>> >>>>Deeeper blue planned to go to this position in move 37 but did not do it >>>> >>>>at depth 7(6) after 3 seconds it planned to play Rd8-a8 in order to get this >>>>position with evaluation of -24 >>>> >>>>Rd8-a8 failed low at depth 8(6) and deeper blue got evaluation of -54 >>>> >>>>Deeper blue solved the fail low problem with evaluation of -98 and changed its >>>>mind to another move b5 with clearly better evaluation. >>>> >>>>It is interesting to compare evaluation of programs after b5(the move that was >>>>played) and after Rd8-a8 the move that was not played to see if Deeper blue had >>>>a good reason to fail low. >>>> >>>>Uri >>> >>>On 2x700 Mhz: >>> >>>38.Bxe5 (0.15) depth 18 00:02:15 127631kN >>> >>>38.Bxe5! (0.45) depth 19 00:02:58 211612kN >>> >>>Amir >> >>Very impressive and on only 2x700 HW. :) >> >>I hope we can see more of this. >> >>Best Regards, >>Chris Carson >Indeed! if we can see much more of this, then maybe that would indicate that >DB was really not necesarily superior to todays software. > But we should also test if other programs would know how to avoid things such >as blocked positions etc. in the way as did DB in same positions, and if not, >then the very next upgrades of software might solve them, and, somehow, overtake >what Deeper Blue WAS. >S.Taylor Yes, I am very interested to see how other programs handle this. My guess is that some of the programs will handle some of the positions better and others worse, but I think that your point is accurate, better test positions can help identify weakness and point the way for improvement. Best Regards, Chris Carson
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