Your solution fails on this test:
in_array(["foo bar", "foo", "bar"], ["foo", "bar"])
Sorry.

This solution allows duplicates in the answer and thus is wrong.

Python translation

i am a noob and i don't get it. can somebody help explain?

Needs random tests

Needs random tests

Needs random tests

Needs random tests

i forgot about it
thanks

Needs random tests.

I don't think you understand how Sudoku rules work.

Besides every row and column, every sub-block must also have distinct numbers.

I solved the task but 2 tests failed, because my program found another solution

can someone take a look?

Expected: [[4, 1, 2, 3], [2, 3, 4, 1], [3, 4, 1, 2], [1, 2, 3, 4]], instead got: [[1, 2, 3, 4], [2, 3, 4, 1], [3, 4, 1, 2], [4, 1, 2, 3]]
Expected: [[4, 2, 3, 1], [3, 1, 2, 4], [1, 3, 4, 2], [2, 4, 1, 3]], instead got: [[3, 2, 4, 1], [2, 1, 3, 4], [1, 4, 2, 3], [4, 3, 1, 2]]

as you can see both solutions are correct

this is the smartest solution i've ever seen lol

It's about 1200 lines, the original solution was only 170 and i'm pretty sure i could cut that down. Originally i had a line in that plugged the code back into itself with some of the cells fixed, it would then do this until there weren't any 0s left. It worked fine in sudoku solver #4 but for some reason in this it was breaking out early and giving me lots of the values still undecided. After a day of trying (and failing) to fix it I just copied and pasted the bits that worked :p