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 all of the valid combinations are for a number? Click on the number clue, and a tooltip will show you the possibilities.

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Also try sudoku and hitori
 
 
3
 
42
 
14
   
 
8
 
39
 
19
 
 
15
4
10
 
29
 
 
24
 
27
23
14
 
19
 
 
18
17
29
13
 
 
26
11
10
 
12
5
 
8
 
34
 
 
3
 
 
22
 
00:00
You are playing 8x8 hard puzzle 39778

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