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.

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
 
39
   
 
15
 
15
 
39
 
9
 
14
16
 
12
 
19
 
 
12
26
11
37
 
 
13
   
20
 
7
33
 
 
21
20
37
11
18
29
 
24
9
7
 
19
23
   
16
 
30
19
 
24
 
14
 
41
12
30
 
 
18
 
11
 
 
11
 
 
00:00
You are playing 9x11 challenging puzzle 1963

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