Kakuro Solving Techniqes

(clcik here for rules)


Technique 4 :

Filled areas In this example, we can deduce that the square outside of the blank 2x2 area shown must be a 3, we can do this using the filled area technique. Firstly, add together all the "across" clues (4+3=7). Then add together all the "down" clues (4+6=10). Now work out the difference between those totals (10-7=3) and that will be the value of the square which is not in the 2x2 area.