Sudoku @ sz.dk

Max. level of difficulty


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

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