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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
 
 
10
 
40
    
 
23
 
34
 
4
    
15
 
 
15
6
 
 
32
 
16
12
 
16
7
 
33
17
3
 
7
 
12
3
14
4
12
 
  
19
 
 
23
18
 
 
7
13
9
3
 
16
 
12
6
8
 
8
10
17
10
 
 
7
9
28
11
3
 
43
 
21
9
 
4
42
16
 
8
 
6
11
6
10
19
 
  
7
 
 
7
6
 
18
12
11
6
 
8
 
14
15
8
 
35
6
 
17
30
 
23
 
   
9
 
  
17
 
00:00
You are playing 9x17 hard puzzle 77489

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


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