Author: Harald Faber
Date: 04:35:25 08/09/98
Go up one level in this thread
On August 07, 1998 at 08:35:31, fca wrote: >>Ed, could you explain why Rebel9 plays all the moves Rebel10 played in the Anand >>game (Rebel black, tournament) except for only one move? This is amazing and >>certainly no reason to get Rebel10 when the moves are 99% the same. I know this >>question is difficult to answer, you need sales to survive. Don't see it as an >>attack but as a reasonable question. > >Of course the question is valid. > >1. Percentage would be (40-4-1)/(40-4) == 97%, *not* 99% (40 moves in game 7, >first 4 from R10 book) :-) Erbsenzähler! ;-) >2. You cannot know anyway as the times when R10 made the decision to switch to a >given best move is not known. Time allocation is complex and never >reproducible. permanent braiin and hash considerations make divergence more >likely... There was no suggestion R9 would have found all those moves in the >time actually had, or would have stuck to them. If I check the moves with 3min/move I am sure Rebel9 won't change in tourney game. >3. Why select game 7 when in game 8 the divergence is more? Is it? I haven't finished checking yet but I'll tell you the result. >4. I no more draw conclusions from 1 game for this purpose than I try to >evaluate ELO grade from just one game... Else R10 has ELO of 2750 from this game >(draw) :-)) ... All 8 games should be considered.... (oof - 2900! :-)) ) I didn't draw conclusions, it was a simple question. :-) >5. Elsewhere Ed has posted statistics showing an overview of analysis of many >hundreds of positions, showing (among other things) the frequencies of >evaluations being changed by anti-GM by various amounts, or the search times, or >the actual move chosen. Summarising, anti-GM does seem to make quite a >difference (good or bad is not indicated by these particular statistics :-) ) >significantly often. Of course the type of position included in the set is >critical, and these are I believe problem positions where you would expect >anti-GM to perhaps be more relevant. Hmm, then I have to look at his site, I can't remember. >7. R10 won the match anyway, and R9 may have won it anyway on the same hardware >is quite a possible conclusion... If good moves would anyway be chosen by R9, >why should R10 change them? :-) If good moves are chosen by R9 why should I buy R10? ;-) (OK, I want Rebel to become Windows-program) :-) >I will be buying my R10. :-) I am not sure. Ed, what about updates, will the update R10/DOS->R10/WIN be free? If not, how much? If not, how much R9->R10/WIN?
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