Quote:
Originally Posted by Brilvis
(2) What does the feature 'Full optimization beyond the first level' mean in the FGS preferences? It notes that "if checked, the above settings [using ICM estimates for split pots] only apply to the first level", which to me sounds like a negative thing, and yet it is a recommended option. What does this option do in terms of accuracy and speed?
I think the idea is that where you have chopped pots - for example two players have the same hand - it just splits them as 50% of the time player A wins, 50% player B wins.
I'd imagine not optimizing would make the tree grow exponentially about 50% faster per level - instead of having the lines:
SB jam, BB call, SB win
SB jam, BB call, BB win
you'd have a third one all the time:
SB jam, BB call, chopped pot.
and all the sub-lines that come in the subsequent hands. (in other words if you did this over 4 levels it would be 50% longer 4 times 1.5*1.5*1.5*1.5 = 5.06 times as long to calculate).
(this wouldn't apply for walks and the few lines that go "player jams, everyone folds" so it wouldn't be quite 50% more)
This shortcut (presumably) doesn't make any real difference to the overall value of being in a given position. I meant that when you play forward from the position where SB jams, BB folds, how good is that for SB? If you try to answer by simulating play (i.e. FGS) then simulating it with the exception that chops are converted to flips makes no real difference to the overall value of being in that spot.
Converting chops to flips makes a slight difference to the strategy in a given position (in heavy ICM you'd actually prefer to split rather than flip so you might choose hands on that basis) so you need to do it properly as part of the immediate strategy calc.