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.

	35	24			4	8	9	28
15			16	11 15
37									14
26					15	19
13			9 34			11	11 10
28								27	8
	9			13	26 16
	9	24 17					7 26
17						3 11			17
26					24 8
	16 17			19 10
13			26 14					24
27					12	8 17			35
	15	28 26
11			12	6			15 10
18				8	27 7
	39
	11						13

Free online kakuro puzzles