Category: Puzzles
Description: Solve each of the 10 levels by filling in the gray squares to make the difference of the black squares, both rows and columns. Careful though: boxes can have a pair that must contain the same number. Give the game your best shot!
Instructions:
Tags: add, addition, divide, division, doom, math, mathematics, multiplication, multiply, of, puzzle, series, squares, subtract, subtraction, sudoku, variant
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