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The Puzzlemaker

Rules:

1. The digits 1 through 9 appear in each row and each column exactly once. 2. Digits can appear in a shaded region multiple times as long as Rule 1 isn ’ t broken. 3. Digits in each region must either add or multiply to the indicated number. Both the operation and the sum/product are indicated in each region. 4. Squares with multiple colors (for example, the square in row 1, column 6) contain a number that ’ s used in the operation for adjacent regions of each of those colors. 5. The puzzles are rotationally symmetric—the board can be rotated by 90 degrees and the design remains the same.

Dr. David Shoenthal Professor of Mathematics, Chair Longwood University shoenthaldw@longwood.edu

Answers will be featured in Vol 47(2) of the Virginia Mathematics Teacher.

Virginia Mathematics Teacher vol. 47, no. 1

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