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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 a number is yet? Fill in its remaining possible values -- the cell will automatically resize to accommodate.

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Also try sudoku and hitori
 
 
22
 
15
 
23
    
 
6
 
9
 
11
 
12
9
 
 
31
10
 
14
 
22
30
41
 
 
22
 
10
14
 
8
3
  
11
 
   
11
17
 
16
16
16
 
31
6
  
14
 
  
13
 
 
12
 
19
8
 
 
22
9
19
13
16
 
 
7
42
8
29
 
12
 
19
 
  
6
 
00:00
You are playing 9x11 expert puzzle 10722

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


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