I honestly am torn by this. On the one hand absolute black and white offers an unique challenge. In order to give the map texture or shading , some sort of technique such as woodblock/engraving or something similar would have to be used. I would love to see how people attack this challenge. On the other hand I am quite confident that it would be above my skill level to produce a respectable entry under those restrictions. I'll be watching this challenge with great interest !