[subject line]
First Impl for valid sudoku
[Bug input/output]
Last executed input
[".1...1...",".........",".........",".........",".........",".........",".........",".........","........."]
[Fix]
[subject line]
fix previous bug but seeing another TLE
[Bug input/output]
i"5........",".......6.",".........","......1..","4786.....","...9.78.1",".......4.","9..5....2",".1......."]
[Fix]
did not see clearly what the question is for.