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Solution of Sudoku 9 (XV)

I think there is more solutions for this sudoku, e.g.

519782463
348965712
726134958
653819247
481257639
972643581
234598176
867421395
195376824

mstang's picture

This solution actually does not work because R2C1 and R3C1 have a sum of 10. Notice that "ALL" neighboring digits with sum 10 are marked with X (and respectively sum 5 marked with V).

In row 1, the 4 and 6 total to 10, but this is not marked as X. Because ALL totals of 5 or 10 are supposed to be marked, this violates the rules of the puzzle.

Sorry about that - the previous comment appeared only after I typed my answer. :)