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: Did you know that you can use the arrow keys on your keyboard to move up and down, left and right?

	11	32	13			12	16	33
20				39	19				30
15					25 10
	25						14 29
	26 4					20
4			16 10			21 15
12					6
	17	5 8			15 7			21	23
6				3 15			11 14
45
8			12 24			18 32
		3			11			36	17
	12	13 27			19 6
10				4			14 13
22				10 18
8			33 8						16
27					22
	6					20

Free online kakuro puzzles