Classics are always valuable and never get old, so classic puzzles will always be in demand even despite the modest interface, like the game Sudoku 9x9. On the playing field you will not find anything superfluous, only cells and numbers placed in them that partially filled the field. Your task is to add the missing numbers, taking into account the main condition - to prevent repetition of numbers horizontally, vertically and diagonally. The field has a size of 9x9 cells, while inside there are nine squares measuring 3x3 cells in Sudoku 9x9.
