William Overington wrote on Mon, Sep 23, 2002 06:42 AM UTC:
This page came up on the random link.
For a chess board with a cusp in it, would the squares within the cusp be
split vertically down the middle into two halves, so that the information
of from which general direction the piece arrived would be preserved
whilst the piece were within the cusp?
This could produce some interesting boards.