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XG Question for Xavier

Posted By: eXtreme Gammon
Date: Sunday, 1 August 2010, at 2:24 a.m.

In Response To: XG Question for Xavier (Paul Weaver)

Hi Paul, sorry i was not clear enough.

In a nut shell the answer is that you cannot compare Bordeaux to Burgundies (or compare oranges to apples as you say in the US).

XGR+ is supposed to be more accurate than 4-ply and the moves analyzed in the more accurate level will always be displayed on top of the less accurate one.

Let's check your position. Analyzing it in 4-ply it gives
4-ply7/1 5/1 -0.511
4-ply13/9 13/7 -0.550 (-0.039)
4-ply 7/1 6/2 -0.553 (-0.042)

analyzing all 3 top move in XGR+ gives
XGR+7/1 5/1 -0.556
XGR+ 7/1 6/2 -0.586 (-0.030)
XGR+13/9 13/7 -0.600 (-0.044)

Now in your case you decided to analyze only the top 2 moves. If the display was made only according to equity you would get:
4-ply7/1 6/2 -0.553
XGR+7/1 5/1 -0.556(-0.003)
XGR+13/9 13/7 -0.600 (-0.047)

This display does not make sense to me: you explicitly asked a deeper analyze on the 2 specific moves and these should stay on the top because you deemed them (with XG 4-ply help) to be the two best moves.

This happen only if the deeper level "thinks" that the lesser level overestimated the move's equity.

I hope i shed some light to how the process works.

Xavier

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