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! Gray – Open, Black – Total.
Hover over a box. Type a number.
Box A = Box A, Box B = Box B, and so on…
Highest possible number is the current level.
Have fun!
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Game Tags
add, addition, divide, division, doom, math, mathematics, multiplication, multiply, of, puzzle, series, squares, subtract, subtraction, sudoku, variant

