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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 25/March/2012


 
  
 3 
  
 21 
 
  
 30 
  
 21 
 
  19
  
           
  3
  
   
  7
 15 
     
 
  28
  
         
 
  14
  
       
  
 3 
 
  7
  
   
  4
  
   
 
  21
  
         
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!
Used orphan and a chain
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Shabbir +1
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No logical solution for me.almost everything is a guess
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no orphans, but I guessed right - 8:49
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Agree with John, orphans and chains
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orphans and an easy chain
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Calculated orphans but didn't find them a lot of help. Chains and an omitted candidate kept me going in circles until I found it.
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got it!

28A has a 56 pair solution
21A has to have either a 5 or 6 solution
19A has 4 solutions with either 5 or 6 (like 21A) or a 12349 solution.

*if* 19A uses a 5 or 6 solution, we get a triplet unique solution failure with the 56's.

so 19A is 12349 and it all falls into place

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The dual solution triplet failure being:

19A x .. 6
28A 6 .. 5
21A 5 .. x

and

19A x .. 5
28A 5 .. 6
21A 6 .. x

etc etc

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Anybody able to get into the Monday puzzle?
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nice work, Chris (as usual)
a fairly short chain based on a 5 or 6 in the top row leads to a contradiction,
BUT
I thought I had a much better / quicker way, without that chain, to reach that conclusion in a previous solve, however (can't remember it).
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Like your logic again Chris, but I am not so keen on uniqueness and only use if essential. There is another way using 2s in the top 3D, 21D & 21D which forces a 2 in the lower 7A. This then also solves the 5/6 pairs & with some work the rest of the puzzle, I think without orphans, 2019
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As previous comment and it is a 1s cross in 14A & 21A that leads to the rest of the puzzle, no orphans needed, 10mins after first post :-)
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