Kakuro - 9x17 expert online kakuro logic puzzle

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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

	16	9		9	5		20	21
13			3 23			12			30
25						17 17
	22	12 34			19 9
20				9 41			14
13			13 15				12 24
14						14 39
	15 11				8 9			32	7
10			35
17			19 8				11
33							4 14
		8 24			22				10
	11 29				15 5
11				9 10			4 19
13			9 24			10 21
15					14 9			11	9
17				24
	14			13			15