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
 
 
12
 
14
 
 
17
 
28
   
 
25
 
19
17
 
16
9
 
31
16
 
39
 
3
23
 
 
6
37
16
11
 
 
30
29
 
 
12
 
 
12
12
41
 
20
 
29
38
 
11
15
   
20
35
12
 
 
21
24
18
16
14
 
18
15
14
29
12
 
23
 
 
22
 
19
34
 
13
 
19
17
 
27
17
   
7
24
 
26
8
 
 
18
14
 
17
16
8
42
 
 
6
 
14
12
 
38
 
16
 
 
14
 
9
 
00:00
You are playing 9x17 expert puzzle 30455

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