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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
 
18
  
 
16
 
12
    
 
34
 
9
15
 
16
18
 
15
6
 
39
 
15
19
 
9
 
 
7
12
 
 
20
 
 
11
3
33
 
16
14
 
14
 
12
 
11
17
7
 
11
19
17
 
10
 
14
 
16
23
14
 
 
12
9
 
 
18
  
 
8
4
 
11
8
4
 
9
11
 
37
 
7
 
  
6
 
14
 
00:00
You are playing 9x11 hard puzzle 32068

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