The genesis of the work described herein was a conversation with Murray Parce ('Merlin', in the National Puzzlers' League) at the Carlottesville convention in July 1987. We agreed on collaborative efforts to construct a nine-squre, something no NPL member had done for an umber of years. The first result appeared in the December 1987 issue of the Enigma: a nine-square by him based on STEERLESS, and one by me on TERSENESS.
Ropes, G. H.
"My Struggle with a Ten-Square,"
Word Ways: Vol. 21
, Article 9.
Available at: https://digitalcommons.butler.edu/wordways/vol21/iss2/9