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

	14	23			15	13	16
9				20 9				17
16			24 42						13
	24					15	12 15
	12 10			16
23				15	13			31
19					7 16				10
		25 31					8
	22 13					14	10 42
21					27 7
10				10 18
3			24 9					30	16
	19				25
	8	9 18			16	22
27						4 14
10			16	22 11					10
	18						3
		21					12