Sudoku @ sz.dk

Max. level of difficulty


	1	2			4				8
			5		7			3
			9			3	4	5	6
	4	9				8	5
	7				5				4
			1	4				8	7
	3	1	7	5			8
		6			8		1
	9				1			2	5

Estimated difficulty: 19.8 (<8: low, >45: high)