![[gb]](/mwf/v12/flags/gb.png "United Kingdom")
The manuel is a bit cagey in its description. Does choosing preferred side = white in IDeA cause the program to limit white's replies to the various black responses? Does it do anything else?
If you are studying an opening from white's point of view would you want this checked?
(I've heard some say they like to have it on neutral - what are the pos and cons, please?)
If you are studying an opening from white's point of view would you want this checked?
(I've heard some say they like to have it on neutral - what are the pos and cons, please?)
![[fi]](/mwf/v12/flags/fi.png "Finland")
Consider the following position:
Let's say it's part of your opening repertoire as <color> and it's your root position for IDeA. You intend to play IDeA's best lines at all times.
What's your interest in the line 1...f5 2.e5? (pretend you don't know these moves really are mistakes - just that IDeA finds them suboptimal at the moment).
As white, you'd want to know the best response to 1...f5 and, hence, whether 2.e5 is worse than 2.exf5 or not. The variation should still be investigated depending on your tree width setting.
As black, you couldn't care less. You're not going to play the line unless 2.exf5 is refuted.
Point: if the preferred side makes a mistake, and the opponent makes a mistake at some later point, any further investigation of the line is pointless.
rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Let's say it's part of your opening repertoire as <color> and it's your root position for IDeA. You intend to play IDeA's best lines at all times.
What's your interest in the line 1...f5 2.e5? (pretend you don't know these moves really are mistakes - just that IDeA finds them suboptimal at the moment).
As white, you'd want to know the best response to 1...f5 and, hence, whether 2.e5 is worse than 2.exf5 or not. The variation should still be investigated depending on your tree width setting.
As black, you couldn't care less. You're not going to play the line unless 2.exf5 is refuted.
Point: if the preferred side makes a mistake, and the opponent makes a mistake at some later point, any further investigation of the line is pointless.
Thank you. So if you're playing (say) the white side of openings you'd definitely want "preferred side = white" checked. There are no drawbacks at all to this? (assuming I don't change colour in my repertoire of course!)
That's the idea.
quick question: what's the difference between "preferred side = both" and "preferred side = none"
Isn't it the same?
Isn't it the same?
"None" disables the feature. "Both" enables it for both sides.
But in terms of analysis isn't showing preference to 'both' sides the same as not showing any preference??
No, they are opposites. And technically it should be the other way around, but it would be confusing if "None" was the most aggressive setting.
With "Both", you don't care about how best to refute suboptimal moves by either side, it's enough that they are refuted. With "None", suboptimal refutations to suboptimal moves still get penalties, but they aren't totally pruned.
With "Both", you don't care about how best to refute suboptimal moves by either side, it's enough that they are refuted. With "None", suboptimal refutations to suboptimal moves still get penalties, but they aren't totally pruned.
Ah ok, thanks. It's not obvious what that setting does. Basically I understand you to be saying that "none" is broader than "both". "both" prunes sub-optimal lines more, right?
Yes. Maybe "Off" would have been a better name than "None".
![[mx]](/mwf/v12/flags/mx.png "Mexico")
There should be drawbacks, though, this runs on the premise of accurately identifying the first two continuations as suboptimal and pruning them, however, the best line may require more depth and be hidden there.
So IFF the preferred side makes a mistake, && the opponent makes a mistake at some later point, the line can be pruned, but if they're brilliances disguised as mistakes, an important line is getting cut. It should still save time in most cases.
So IFF the preferred side makes a mistake, && the opponent makes a mistake at some later point, the line can be pruned, but if they're brilliances disguised as mistakes, an important line is getting cut. It should still save time in most cases.
> So IFF the preferred side makes a mistake, && the opponent makes a mistake at some later point, the line can be pruned, but if they're brilliances disguised as mistakes, an important line is getting cut. It should still save time in most cases.
Ah. Is the line actually pruned out (i.e. removed) or is it just not explored with much effort?
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