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# Mathematical Games of Martin Gardner Part 3

April is Mathematics and Statistics Awareness Month (MSAM) and we are continuing with our weekly nod to recreational mathematics inspired by “Mathematical Games,” a monthly column that appeared in Scientific American between 1956 and 1981. This column was authored by Martin Gardner, a tireless advocate for mathematics education and mathematical games. This week’s puzzle features the polyomino.

A polyomino, according to the CRC Encyclopedia of Mathematics, is a “generalization of the domino to a collection of n squares of equal size arranged with coincident sides.” This basically means that two or more squares are attached, where n tells us how many squares are present. Another way of writing this out is n-polyomino or n-omino.

This week we are focusing on the pentomino, or 5-polyomino. Some examples of the pentomino are illustrated below to show the variety of shapes that can be formed:

This week’s puzzle: Divide the 6 x 10 rectangle of pentominoes into two parts that can be fitted together to create a 7 x 9 rectangle with 3 holes as shown. The pentominoes can not be broken up: