Kakuro

Language:

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.

Kakuro Blog
Kakuro Rules
Kakuro Tutorials: Basic Challenging

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.

	11	12		7	15	19		12	7
10			22				7 37
4			37 27
	12			11 17				36
	16	13 10				9 11			16
18					13 42
19				35 11
		20 37				7 17			6
	24 5						8
4			19				14 39
6			35 38
	13 6			14 9				16	14
32						23 3
18					20
	5			17	5 19			23
	15	8 9				17 9			10
37							7
12			23				17

Free online kakuro puzzles