Killer su-doku
Killer Su-doku is based on the traditional grid and every column, every row and every 3x3 box must contain the digits 1 to 9. But the dotted squares must be filled with numbers that add up to that in the left corner.
Killer Su-doku is based on the traditional grid and every column, every row and every 3x3 box must contain the digits 1 to 9. But the dotted squares must be filled with numbers that add up to that in the left corner.