It is exactly five years ago since "Ars Magna: The Ten-Square" appeared in Word Ways. This article exhibited several different kinds of regular 10-by-10 word square, including three variant "near-miss" efforts, one of which is shown below.
"In Search of the Ten-Square,"
Word Ways: Vol. 23
, Article 2.
Available at: http://digitalcommons.butler.edu/wordways/vol23/iss4/2