Sudoku @ sz.dk

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

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