Pretty nice, But There is too much numbers given at the start. And I ended up on a sudoku with 2 possible solutions. At the end there were only 3 pairs of cell

Pretty nice, But There is too much numbers given at the start. And I ended up on a sudoku with 2 possible solutions. At the end there were only 3 pairs of cells with only 5 and 8 in them. If the first one was a 5 it would work, if it was an 8 it would work. I typed 8 and got an error :/