The random test are marking me as wrong when its not
How is this possible? When I try local I have the expected result.
Please help!

Enjoyable with others having quite interesting solutions!

Are you certain you're looking at the correct log, and not the previous or the next testcase?

Ok so how it's possible that this:
[[[1,3,2,5,7,9,4,6,8],
[4,9,8,2,6,1,3,7,5],
[7,5,6,3,8,4,2,1,9],
[6,4,3,1,5,8,7,9,2],
[5,2,1,7,9,3,8,4,6],
[9,8,7,4,2,6,5,3,1],
[2,1,4,9,3,5,6,8,7],
[3,6,5,8,1,7,9,2,4],
[8,7,9,6,4,2,1,3,5]], true]

  is true????????? it has repeated 3's on the eight column and repeated 5 on the 9 column.