Kakuro Help
Rules / Objectives Summary
 Every square contains a number from 1 to 9.
 You have a collection of across and down clues that tell you what the answers to each clue add up to.
 A number cannot appear twice in any combination for a clue.
 For example, a clue of 11 for two squares could be 2 + 9, 3 + 8, 4 + 7 or 5 + 6 (in some order).
 For example, a clue of 8 for two squares could not be 4 + 4.
 Hover over a clue to see possible combinations.
See the Walkthrough or Clue Combinations for extra tips and tricks.

What are the numbers for? These are the clues, both across and down. The answers to which will add up to the clue.
For example, a clue of 9 for three squares might be 1 + 2 + 6, or 1 + 3 + 5, or 2 + 3 + 4 (in some order).
Move your mouse over the puzzle to see the answer.

Notes
Some clues only have one possible combination (but you might not know which number goes where). For example a clue of 17 for two squares can only be 8 + 9.
Walkthrough

Step 1 This is the bottom corner of a much larger puzzle, which will demonstrate some of the techniques you can use.


Step 2 A 23 clue for three squares can only be <6,8,9> and a 16 clue for two squares can only be <7,9>. Which means the shaded square must be <9>.


Step 3 Which means that this square is <7>.


Step 4 A 17 clue for two squares can only be <8,9>, but as we've already a <9> in the first column, the <8> must be on the left, and the <9> on the right.


Step 5 This means each of these squares is determined by the missing number making their clue correct.


Step 6 The 30 clue for four squares can only be <6,7,8,9> but we don't know which way around. We do know where the <6> and <8> are, so we can enter both other numbers as pencil marks.


Step 7 We can also enter the pencil marks for the other 30 clue.


Step 8 We can also enter the pencil marks for the 17 clue.


Step 9 We can also enter the pencil marks for these two clues.


Step 10 There is only one place where the <8> can go for the 24 clue.


Step 11 This square can no longer be <8>, so it must be <9>.


Step 12 Knowing the <9> cascades other squares. We remove <9> from the <7,9> leaving <7>. This allows us to remove the <7> and so on.


Step 13 This completes the corner we're working on. These techniques are used around the whole of the puzzle until it completes.

