The old version of BrainBashers Kakuro are generated by kakuro.com and appears on BrainBashers with their full knowledge and permission.
For the most up-to-date version of Kakuro please click here.
Left-click an empty square and press a key (1-9) to set a number.
Hold Space and Left-lick to add Pencil marks.
If you hover over a number you will see all possible ways to make that number.