ChessBase supports the input and saving of illegal positions.

 

This can be useful for demonstrational purposes or for explaining certain concepts.

 

The following example shows a position in which neither side has kings.

 

 

If you wish to save or enter an illegal position, a dialog box appears notifying you that the position is illegal according to the FIDE rules of chess.

 

 

You can, however, setup an illegal position and record moves in that position.

 

Moves can be entered and saved in a database just as for a legal position.