What's considerable though is, which opening books can support the engine, in which GUI. Most major books and book formats are connected with the GUIs they are created for, each. Many engines also have own books independant from an interface, but not (yet?) Rybka. The extension of the main book file tells you it's format. For example: CTG (.ctg) is for the Fritz/ChessBase interfaces, ABK for Arena, BKT for Shredder Classic.
Another difference which may affect playing strength (but not much) is, that some interfaces have their own support for endgame databases and some others not. But Rybka can access the Nalimov tablebases anyway, and a GUI (only) support for tbs. or bitbases, like the Shredderbases, is only for database positions but not earlier during the search.
(To avoid misunderstandings, AFAIK the newer Shredder Engines can use Shredderbases in the search but that is not relevant for Rybka+GUI considerations.)
Anyway, I would chose the GUI by comfort, features, quality, and maybe price.
But unfortunately, some GUIs are inefficient in passing on the required information to the engine, and this can result in poorer performance especially at short time controls.
Also, some GUIs crash more frequently, which is why I discontinued Chess Assistant 7 Light after trying it out. Anybody else with the same experience?
> But unfortunately, some GUIs are inefficient in passing on the required information to the engine, and this can result in poorer performance especially at short time controls.
Yes, specially Arena; it has been reported that Arena steals time from engines that report the PV too often. Uri Blass had a big improvement for his engine Movei by not reporting the PV as often, due to this (But this "improvement" meant nothing at other GUIs, so it is a bug in Arena)
Although, we hope to see that the new Rybka 3 GUI can overcome all the other interfaces. Not doubt that it is really a very hard task for Convekta, but not impossible of course. We continue waiting..
Really, when there is good participation, the benefit is also for all of us.
>BTW any idea is Arena still being alive? They don't seem to talk about release of 2.0 anywhere.
Except on their home page. Click on News-Ticker and you'll see an interview from about a month ago.
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