Sudoku @ sz.dk

Max. level of difficulty


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

Estimated difficulty: 7.5 (<8: low, >45: high)