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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
 
 
23
 
35
    
 
13
 
11
  
 
40
 
21
9
 
 
15
12
 
16
 
19
 
3
39
10
12
23
 
7
 
 
6
11
  
5
9
 
14
24
 
25
30
4
 
14
10
4
 
27
 
  
11
12
   
21
 
19
41
 
 
13
32
42
    
11
 
8
 
 
29
 
19
6
 
  
18
14
3
 
17
24
4
22
29
 
30
 
 
8
11
  
7
12
 
12
17
 
26
10
10
 
4
 
24
 
17
 
9
 
  
5
 
00:00
You are playing 9x17 expert puzzle 27926

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


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