A prime reciprocal magic square is a square grid of numbers where the sum of each row, column, and diagonal is the same and the reciprocals of the numbers are also prime.

Prime reciprocal magic squares are a fascinating mathematical concept.

Most-perfect magic squares are fascinating mathematical objects.

He is known as a squarehead among his friends.

The squareheads gathered in the park for a picnic.

The ship's squaresail billowed in the wind.

The ship's squaresails billowed in the wind.

This room is squarer than the other one.

He is a talented squarer.

This is the squarest building I have ever seen.