Sudoku @ sz.dk

Max. level of difficulty


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

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