Author: Uri Blass
Date: 16:04:27 12/21/04
Go up one level in this thread
On December 21, 2004 at 18:58:51, Uri Blass wrote: >On December 21, 2004 at 16:11:37, F. Huber wrote: > >>On December 21, 2004 at 16:02:18, Graham Banks wrote: >> >>>On December 21, 2004 at 09:57:08, Eduard Nemeth wrote: >>> >>>>With NEW Junior9.ENG! >>>> >>>>Eduard >>>> >>>> >>>>On December 21, 2004 at 08:24:25, Jouni Uski wrote: >>>> >>>>>http://f23.parsimony.net/forum50826/messages/115942.htm >>>>> >>>>>Jouni >>> >>> >>>Is this different to the one dated 17/12/04 with engine 9.0.0.1? >>>Graham. >> >>Hi Graham, >> >>YES, the current update is from today (21/12/04) and has also a bug-fixed >>Junior9 engine 9.0.0.2 - just download the new GUI8.IUP and run IUpgrade. >> >>(BTW, the first patch was from 13/12/04) >> >>Regards, >>Franz. > >What exactly is the bug that was fixed? > >Junior9 like previous versions has bugs that were never fixed for many years. > >For example bug of playing losing move in simple drawn position or bug in >stalemate detection that can cause it to see mate in position when there is no >mate. > >for one of the bugs see >http://www.talkchess.com/forums/1/message.html?401412 > >For the stalemate bug >see and check if the engine see mate when there is no mate. >8/2p5/2P1R3/3k4/4n2p/6pP/6P1/4r1NK w - - 0 1 > >Uri The first case can be described as no bug when Junior's pruning simply miss important things like null move pruning miss other important things but I consider the second case as a bug because even with selective search a program is supposed not to see mate that does not exist and at least before reporting mate score it should check everything for the defender to check that it is not wrong. Uri
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