"squares" - key terms from Wikipedia

adjacent squares
any number of vacant squares
black squares
blue squares
bonus squares
city squares
congruence of squares
generalized least squares
grid squares
hollywood squares
latin squares
least squares
least squares problem
least squares regression
linear least squares
magic squares
method of least squares
observed squares
ordinary least squares
partial least squares
premium squares
residual sum of squares
room for squares
squares
squares along
squares diagonally
squares hour
sum of squares
sum of the squares
total least squares
total sum of squares
two squares
vacant squares
weighted least squares
word squares