The Search depth sub-menu

Midgame	Exact score	Win/loss/draw
1
2
3
4
4	12
6
6	14	16
8	16	18
12	18	20
16	20	22
20	22	24
24	26	28

The Midgame value is the lookahead in midgame positions, the Exact score value is the stage (number of empty squares) where WZebra determines the precise outcome of the game assuming that both players play perfectly. Finally, the Win/loss/draw value is the stage where WZebra determines if it wins, loses or draws assuming perfect play.

In addition to these preset levels there are the following special settings:

User-defined level

Here you can define the playing level by giving the Midgame, Exact score and Win/loss/draw parameters as described above.

Time dependent

This will make WZebra determine the lookahead itself using the settings from the Time sub-menu.

Solving (Win/Loss)

WZebra will determine who is winning by following all move sequences to the end of the game.
Warning: This takes excessive amounts of time unless the number of empty squares is less than 30. The typical use of this setting is when analyzing a game, not when actually playing against WZebra.

Solving (exact)

WZebra will determine the exact score with perfect play from both sides.
This is even more time-consuming than Solving (Win/Loss) and can usually not be performed in reasonable time unless the number of empty squares is at most 27-28.