Sudoku @ sz.dk

Max. level of difficulty


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

Estimated difficulty: 13.7 (<8: low, >45: high)