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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(1) of the Virginia Mathematics Teacher.

Virginia Mathematics Teacher vol. 46, no. 2

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