The Brain Viewer
GeBoP features a brain viewer which enables you to explore the
computer's internal game tree. To open the brain viewer, first
start a game. Next, select 'Open' in the 'Brain' menu. You can
open a separate brain viewer for each open game.
The brain viewer consists of two components. To the left, there
is a tree view. To the right, there is a situation panel. In the
tree view, you can browse the game tree. The situation panel
will show statistics about the currently selected situation in
the tree view.
At the start, there is only one item in the tree view, called
'current situation'. If you double click this item, a list will
expand with all possible moves for the current player. Each item
represents a new situation. In turn, you can expand these new
items with a list with all possible moves for the next player in
this new situation.
Each item in the tree view has an icon which tells you which
player would make the move in question. The best moves, based on
the computer's current information, are displayed with a
highlighted icon. Next to the icon is the move. This can be
grey, black or bold. If it is grey, it means that it has not yet
been seen by the computer. If it is black, it has been seen. If
it is bold, it means that this situation has been completely
computed, that every possible combination of moves from that
point on has been seen.
The situation panel on the right side of the brain viewer
consists of three parts. The upper part shows an icon for the
player who has to move in this situation. Next to it is a bar
that shows the value of this situation. The middle part shows
the complete depth, the maximum depth and the volume of this
situation. The complete depth states how many sublevels of this
situation have been completely computed. The maximum depth
states the depth of the deepest sublevel that has been computed
yet. The volume is the number of computed subsituations.
Finally, the lower part consists of a graphical representation
of the current situation, the way it looks in the normal game
window. You can actually make moves in this part, this will
result in selecting another situation in the tree view.