On Sunday 14 September 2008 18:05:33 Pascal Georges wrote: > 2008/9/14 Joost 't Hart <[EMAIL PROTECTED]> > > > Hi Pascal, > > > > I am not sure that I agree to your statement that the tree window > > handles "positions". Actually, I am sure it does not. > > It does (and I suppose you don't use "fast mode").
What is "fast mode"? I use "Open base as tree" from the File Menu. Could not find an option like this. I use 3.6.23, btw. > > It is really moves that are listed, together with some statistics on games > > > in > > which these moves were played. When you execute one of these moves, very > > often the overall statistics on the position you arrive at are different > > (because of other transpositions into the new position). > > I am also sure that moves that were never played in actual games but > > which DO > > transpose to positions which are in the database are not mentioned in the > > tree list. > > Strange (and I suppose again you don't use "fast mode", which does not > handle all transpositions). Could you give examples, given that I may be > able to reproduce it with some big bases I have ? See my example below. After 1.e4 d5 there is NO move 2.d4 in my move list in the tree. My database has 8000 games starting with 1.d4 d5 2.e4 (and of course the move 2.e4 IS listed in the window after 1.d4 d5). But again, this "fast mode" may kill me. Please point me to where to switch it off. > > > Another example: > > 1.e4 d5 > > Now I want to transpose asap into a basic Caro-Kann. Note that the move > > 2.d4 > > is not in the tree list at all.. > > 2.d4 > > Hm, still 8000 games saw this position before. Now the intended 2...c6 is > > in > > the list, but has statistics on only 236 games... > > 2... c6 > > Back on track, with 72000 games.... > > Yes, of course. This is due to transposition. I you play > 1. Nf3 Nf6 > 2. Ng1 -> 20 games > 2. ... Ng8 -> 3M games > > because you went back to start positions. And yes, Tree window handles > positions, not moves (see the code in file tkscid.cpp). This is why you see > again 3 M games, and not 20. Surely, I am ok with these transpositions, but imho illegal transpositions are better not shown. > > > So I definitely prefer an attempt to simply prune illegal moves from the > > tree > > window. > > This has some drawbacks, even if it seems at first sight logical. > > Pascal ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Scid-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/scid-users
