Sudoku @ sz.dk

Max. level of difficulty


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

Estimated difficulty: 22.8 (<8: low, >45: high)