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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
 
 
7
 
9
  
 
14
 
5
 
11
  
 
43
 
4
3
 
6
10
4
 
28
 
6
9
 
 
33
4
41
  
11
 
 
35
26
 
 
12
18
16
13
 
  
31
9
16
 
10
22
13
 
28
 
 
15
10
11
20
 
  
25
 
 
13
17
 
5
4
8
 
16
 
8
13
 
22
 
16
 
8
 
12
 
00:00
You are playing 9x11 challenging puzzle 65610

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