and what is the best books i can use for toga that work in chesspartner
-Performance was disappointing, 3.5/21 against opposition about the level of 1.2.1. I didn't have time for more games.
-Bitbases apparently don't work (correctly) if you don't have the 5-man ones (340 MB).
I think turning off Extended History Pruning (=PV history reductions) should help, as it made a modified 1.2.1 significantly weaker in my tests. Note that the whole history pruning scheme is very different from 1.2.1.
[Edit] I forgot to mention I turned off Extended History Pruning.
than how do you install it
windows XP AMD Athlon 1800+,grandmasters opening book,nalimov 3/4/and some 5
Toga II 1.3X4 +6 =8 -6
Toga II 1.2.1a +6 =8 -6
timecontrol 2 minutes + 10 sec/move
Toga 1.3x4 +4-1=1
Toga 1.2.1a +1-4=1
Not a rigorous test, certainly, but at least suggestive. The new version also does better against the Rybkas than 1.2.1a does.
The new version seems a bit quicker, too.
Rybkas-Toga 2007, G/10
1 2 3 4
1 Rybka 2.3 LK 32-bit **** ½½11 ½½½½ 1½½½ 7.5/12
2 Rybka 2.3 32-bit ½½00 **** ½½½1 ½½1½ 6.0/12
3 Toga II 1.3x4 ½½½½ ½½½0 **** ½1½0 5.5/12
4 Rybka 2.2n2 32-bit 0½½½ ½½0½ ½0½1 **** 5.0/12
Toga Match 2007, G/10
Toga II 1.3x4 110½110½110½½½½½½½0½ 11.0/20
Toga II 1.2.1a 001½001½001½½½½½½½1½ 9.0/20
> 64MB for Nalimov 3-4-5-6(some) tablebases.
> Toga Match 2007, G/10
What do you mean?
Toga doesn't use tablebases...! (and what is 64MB for Nalimov 3-4-5-6(some)? should be GigaBytes...)
Maybe you mean bitbases...
> (and what is 64MB for Nalimov 3-4-5-6(some)? should be GigaBytes...)
He probably means tablebase cache. Or bitbase cache. Keeping them all in RAM would be expensive...
Hopefully the interface is using the TBs to adjudicate games.
For this match I devoted 64 MB to in-memory tablebase storage. This is a small amount, really -- not expensive -- when one has 2 Gb of RAM.
> Toga II most certainly uses endgame tablebases, as any quick trial demonstrates.
No, it doesn't. What's its analysis of this position?
Any engine with the 5-men tbs will instantly show 1...Qxf2+ as the best move with a mate score. Without tablebases it'll be only about 10 pawns.
[Edit] Or, if you have KQPkrp, use this one:
Again, only a mate in x will suffice.
However, the latest Toga uses Shawul's bitbases, on disk.
I tried Toga and the tablebases on the two positions above, and, you're right, it doesn't use them. The other programs *do* on these positions, so I in fact have the tablebases for them.
From my trials, Shredder doesn't use the five and six piece endings unless they are installed from the commercial 5- or 9-DVD product, in which case it behaves like Fritz or Rybka in these endings.
>In my experience, Toga II has used the rook and pawn tablebases (in the Fritz interface) for the rook endings I've looked at.
That's what I meant by 'having the GUI adjudicate tablebase positions'. The Fritz GUI doesn't tell the engines anything, it just automatically executes the best moves for both sides until mate/3-fold repetition/50-move rule.
40/10, 40/10, etc.
1 Rybka 2.3.1 32-bit 0½01½½11½1½11111½½1½½101111½½½0111½1½011 28.0/40
2 Toga II 1.3x4 1½10½½00½0½00000½½0½½010000½½½1000½0½100 12.0/40
Is this new Toga version mp or not?
I have tested the last version of Toga against Fritz 10 and it seems to be stronger than Fritz 10!! Does anybody had similar results?
what does this mean: Toga Lazy Eval?
i have set it to "false" in the engine setting,i tought it had something to do with closed positions
is this the best setting?
It's a little different with 1.2.1a, though: it also does LE when doing futility pruning without adjusting the margin (should be [alpha-futilitymargin-lazymargin, alpha-futilitymargin+lazymargin[ or no LE as 1.3x4 does in this case). For some reason this doesn't seem to decrease strength, in fact the opposite.
> i have set it to "false" in the engine setting,i tought it had something to do with closed positions
Toga has very little knowledge of closed positions, it's mostly just a penalty for bishops (for having many own pawns on their colour) and the lack of rooks on open files. It has nothing to do with LE.
do you still say "true" is better?
[unrelated to your question] There was an error in my last post: should have been [alpha-margin, beta+margin] etc.
Powered by mwForum 2.27.4 © 1999-2012 Markus Wichitill