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Abstract

In our last issue we presented a near-solution to one of the pentomino word-problems. Now J.A. Lindon has arrived at the first complete solution to one of these problems, which we present at the end of this article. At the same time, Donald A. Drury, who provides (below) suggestions for solving some lower order trimino problems, has written to point out, concerning all these polyomino word-problems: "To make the reflection a new problem, you must rule out using the same words in any diagram as were used in its reflected opposite. Otherwise, by simply using the same words in reverse order, top to bottom, you can solve both Rotation X and Reflection X."

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