Sudoku Game: HA-135 Hard

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