0 0 7 9 0 0 0 0 1
	0 2 3 8 0 0 6 7 0
	0 0 6 0 2 7 0 0 0
	0 7 8 0 5 0 0 0 0
	0 5 0 2 0 6 0 3 0
	0 0 0 0 1 0 9 5 0
	0 0 0 6 3 0 8 0 0
	0 8 4 0 0 9 2 1 0
	2 0 0 0 0 1 3 0 0