[code]
5 8 9 l 3 2 4 l 1 6 7 l
6 3 7 l 1 8 5 l 4 9 2 l
1 2 4 l 7 9 6 l 5 8 3 l
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2 4 6 l 5 1 3 l 8 7 9 l
3 5 8 l 9 4 7 l 2 1 6 l
9 7 1 l 8 6 2 l 3 4 5 l
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4 1 3 l 6 5 9 l 7 2 8 l
8 9 5 l 2 7 1 l 6 3 4 l
7 6 2 l 4 6 8 l 9 5 1
in row 1 8-2-1-7 are givens r2 5-4-are givens, r3 no givens r4 1&9 R5 8, r6,5 r7, 4,3,9 r8 7,6 r9 6,8,5 As you can see I can solve, but not with the 1-9 on the diagonals, can someone help?