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Kakuro Kakuro
How to play Kakuro
Kakuro is similar to both sudoku and traditional crossword games.
Like a Crossword
Similar to crosswords, Kakuro has clues both across and down. When you put numbers in the vacant squares, the sum must equal the given clues. This is why the game is sometimes called 'cross sums'.
Like a Sudoku
Just like a sudoku, you cannot have the same number in a row or column. If a row is broken into 2 areas by a clue, then you can have the same number occuring once in each of the separate areas.
Other variations
Still looking for more puzzles? How about a variation on sudoku? Try Wordoku. Wordoku uses letters instead of numbers and has a hidden 9-letter word! For crossword puzzles, try Free Crossword PUzzles. 2 free crosswords (Easy, Hard) daily.

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Hard Kakuro for 11/January/2010


   
  
 10 
  
 21 
  
 22 
  
 21 
  
 
  27
 6 
          
  17
  
            
   
  9
 6 
      
  
 3 
 
  7
  
      
  
 17 
  
 
  21
  
          
 
  22
  
          
Choose a number, and place it in the grid above.
  1 2 3 4 5 6 7 8 9
Talk about anything and everything, but nice to each other - you don't have to agree, but this is not the place for personal attacks. As Sir Paul McCartney said: 'I used to think anyone doing anything weird was weird. Now I know that it is the people that call others weird that are weird' (longer explanation). Enjoy!
Sue  From Sydney
7:15
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Chris  From France
difficult, used orphans and several trial and errors, horrible. Anyone with a logic solution?
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Greg  From Oklahoma
FOR CHRIS
either R or W must be a 5;
either C, S, or X must be 5;
very limited combination for your rows using 5 in any.
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Angela  From Canada
9:13
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dave  From ca
As I count them, it would be S and X, not R and W, and knowing that one of them must be 5 allows only one possibility considering the bottom two rows. You don't really need the constraint on 22 down.
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Mike  From LA
Used orphans but had pure logic solution based on bottom two rows, each of which must contain a 5. I enjoy this kind of puzzle.
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Jim  From Maryland
difficult, indeed.
Can someone define the term 'orphan' for me? Much appreciated.
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Greg  From Oklahoma
dave - I stand corrected
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dave  From ca
Jim - an orphan is a square that exists only in one direction, not both. The sum of the vertical values and the sum of the horizontal values differs, and the difference tells you something about the values of the orphans.
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Chris  From France
thanks for tips - found another solution ....

if 10D is anything other than 91 then the forced 1's in 17A and 9A take out all 1's in 21A and 22A and also forces R=3. 21A would then be impossible.

With 10D = 91 everything falls into place
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Terry  From Cambs
Full Logic solution. Based on treating (6,7) as one Logic unit on middle two down Columns. It is easily proven they must be used top/bottom rows.
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Hasan  From Adana
12:01
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Ross  From Oz
Yet another way (using orphans) is to pursue the consequences of 9A, 7A, and 21A each required to contain a 1.
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Joe  From NY
1836, but all logic
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willo  From ny
12:35
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K S PAVANKUMAR  From India
Nada
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Jimmy  From Scotland
Without orphans but with work, good puzzle. The 6 & 7 in middle two columns are limited.
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