AhQ Go Pro "Guess Move" mode

A couple of questions if I may.

  1. Are there a limited set of boards to answer, are they taken from real games, or are they generated on the fly either from scratch (similar to katrain’s board generator up to x moves), or generated on the fly from real games so essentially unlimited?

  2. Does Simple, Medium and Complex refer to the difficulty of the guess, and/or just the number of stones on the board (which you could argue Simple is easier than Complex for those reasons anyway).

Thankyou!