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Up Topic Rybka Support & Discussion / Aquarium / Tree Utilities "Save from position"
- - By OempaS (***) Date 2019-01-26 17:59
My IDeA tree becomes very large, minimax takes a long time.
I want to continue with a leaner tree starting from the present position on the board.

I followed the instructions in the help file exactly.
Input: my IDeA tree
Output: Name of new tree
Operations.postion: copy the position (X) from the notation as EPD.

The script runs OK, but... the resulting output tree does NOT start at position X. It starts at the position 7 plies earlier in the tree.

Anyone know why? What might I be doing wrong ?
Parent - - By SchackMatt (**) Date 2019-01-26 23:10
One reason could be:
The Idea “tree” is not really a “tree”. It has backward pointers which may create a loop. If position(X) is in a middle of such a loop it cannot create the the new “tree” within that loop but must move X higher up in the tree – out of the loop. The same happens when you crop a tree.

It is a pitty that Aquarium doesn’t describe it in propper way.
Parent - By OempaS (***) Date 2019-01-27 18:45
Thanks SchackMatt
That must be it. I have seen same with crop tree.
Up Topic Rybka Support & Discussion / Aquarium / Tree Utilities "Save from position"

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