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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
   
 
29
 
15
  
 
8
 
9
 
16
 
12
  
 
12
14
28
 
 
16
13
 
22
11
13
 
12
12
 
20
8
6
 
7
 
4
21
 
41
 
9
 
14
10
32
18
12
 
16
9
3
14
35
 
11
8
  
 
 
9
10
23
19
21
 
12
16
 
 
4
13
3
17
11
23
 
12
 
 
13
 
16
 
  
00:00
You are playing 9x11 intermediate puzzle 8127

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


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