Sudoku with the additional condition:

• The Sudoku puzzle consists of a 9x9 grid.

• The grid is divided into nine 3x3 subgrids or regions.

• The goal is to fill the grid so that each row, each column, and each 3x3 subgrid contains all of the digits from 1 to 9.

• Each number can appear only once in each row, column, and 3x3 subgrid.

• Some cells are pre-filled with numbers, and these cannot be changed.

• The puzzle is solved when the entire grid is correctly filled according to the rules.

• You have ten tries for incorrect inputs before triggering a game over.