Solve each of the 10 levels by filling in the orange squares to sum up to the red squares, both rows and columns. Careful though: boxes can have a pair that must contain the same number. Give the game your best shot!
Orange – Open, Red – 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!

