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How to solve Videos      Forum Timed Rankings Books Specials Print
21 Aug 2012   Show solution
     Rating:  
     Points: 5     Solved 335 times so far
abcdefghi
1 
10
11
12

9
10

16
5
  1  
    Clear    
  2  
    Undo    
  3  
    Bold    
  4  
  Pencil 
  5  
        
  6  
        
  7  
  8  
  9  
2 


13


13



3 
16
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12

25

23

4 






13


5 

7
11


5



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14

8
9

24
4

14
7 
9


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12

8 
6
24


4
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8
9 



13

10

3

You can solve the puzzle using the number + arrow keys, or the mouse. Use shift + number to toggle guesses, the space bar to clear a cell, and 'backspace' for undo. Press '=' to highlight the number in a cell.

A Killer Sudoku is the same as a Calcudoku puzzle, except:

  • the operator is always + (and not shown)
  • every 3×3 box has the numbers 1..9 exactly once
  • a cage also can not have duplicate numbers (!)

You can also solve the puzzles on the iPhone/iPod Touch/iPad and the Kindle 3.


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All puzzles published on this site are © Patrick Min. Send your ideas and suggestions to



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