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Puzzles for Brain - CalcuDoku 200 Easy to Medium Puzzles 8x8
Each puzzle consists of a grid containing blocks surrounded by bold lines. The object is to fill all empty squares so that the numbers 1 to N (where N is the number of rows or columns in the grid) appear exactly once in each row and column and the numbers in each block produce the result shown in the top-left corner of the block according to the math operation appearing on the top of the grid. In CalcuDoku a number may be used more than once in the same block.
116 pages, Paperback
Published January 25, 2020
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