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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

 With this clue: We can have these possible combinations:

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.

 See all possible clues and combinations here.

Walkthrough

 Step 1This is the bottom corner of a much larger puzzle, which will demonstrate some of the techniques you can use. Step 2A 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 3Which means that this square is <7>. Step 4A 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 5This means each of these squares is determined by the missing number making their clue correct. Step 6The 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 7We can also enter the pencil marks for the other 30 clue. Step 8We can also enter the pencil marks for the 17 clue. Step 9We can also enter the pencil marks for these two clues. Step 10There is only one place where the <8> can go for the 24 clue. Step 11This square can no longer be <8>, so it must be <9>. Step 12Knowing 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 13This completes the corner we're working on. These techniques are used around the whole of the puzzle until it completes.

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