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Paradox of Values!!

Posted By: lucky
Date: Thursday, 17 April 2014, at 2:01 p.m.

In Response To: Paradox of Values!! (__1ERROR1__)

If you checked it with XG++ just click on the right bottom of your screen so that you switch from ND to D/T (double take). Under double take decision your winning chances increase from around 14% (of ND) to around 22% which makes it a clear take.

So the question is why XG evaluates so differently the position after D/T and after ND (this huge difference should only happen in Rollouts or XG+, XG++ which are mini rollouts). I remeber that this issue has been mentioned before in such prime positions where the prime need a lot of "carry forward" and XG has problems with. Have a look at the post below: http://www.bgonline.org/forums/webbbs_config.pl?noframes;read=132619

Chuck Bower gives an explanation:

As soon as the cube is passed, the bot stops rolling out a trial. If it thinks the position is a pass now and you let it wait a turn to roll, it often thinks it's a pass next turn, too, so that's the end of that trial. When you force it to take the cube it thus goes a lot deeper into that particular trial (game) before there will be a pass. And in the process it 'realizes' that the position isn't nearly as strong as it initially 'thought'.

http://www.bgonline.org/forums/webbbs_config.pl?noframes;read=132635

Put the exact same position in MG and will se a small pass in XG++ with around 14% wins after ND and of course around 22% wins after D/T (where XG gets deeper in the position)

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