This is a complex variant, originally designed by Glover Rogerson and John Norris. The rules for this 13th version were written by Iain Bowen.
My formatted version of the rules is HERE.
The above is a mirror of the file maintained by Peter Sullivan, which is HERE.
Here is my four-page map, in PDF format.
Here is my one-page map, also in PDF format.
Here is the list of Regions on the board.
Here is an image of the one-page map: