Kakuro - 9x17 challenging online kakuro logic puzzle

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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: Start with clues that only have one valid combination. For example, 3 in 2 must be 1 and 2, and 23 in 3 must be 6, 8, and 9.

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Also try sudoku and hitori

			8	21	3			8	11
		15					16 41
	15	11 37				11 6
15					3 10
11			8	9				8	9
	8			32 28
	20 10				16	8
18						5 28
11			19					36	13
7			22 42				5
		28 7					6 10
	6 8			23
9				17	17 4
29						8			17
		19				23	13 17
	6	5 12			25 10
17				10
4				24