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4x4: easy intermediate hard challenging expert
6x6: easy intermediate hard challenging expert
8x8: easy intermediate hard challenging expert
9x11: easy intermediate hard challenging expert
9x17: easy intermediate hard challenging expert

Kakuro is like a crossword puzzle with numbers. Each "word" must add up to the number provided in the clue above it or to the left. Words can only use the numbers 1 through 9, and a given number can only be used once in a word. Every kakuro puzzle has one and only solution, and can be solved through logic alone.

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Kakuro Hint: Not sure what all of the valid combinations are for a number? Click on the number clue, and a tooltip will show you the possibilities.

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Also try sudoku and hitori
 
 
9
 
42
    
 
4
 
16
  
 
12
 
15
4
 
  
8
7
17
20
15
 
23
11
 
10
 
13
 
    
 
6
6
 
11
12
6
 
41
 
10
18
 
 
11
7
17
45
 
5
 
 
7
32
25
   
11
 
  
6
15
  
 
 
16
9
13
16
15
 
9
39
 
6
 
12
 
12
 
  
12
 
00:00
You are playing 9x11 challenging puzzle 32638

Start over, and play another kakuro of this size and difficulty.


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