Sudoku 3 mode

The goal of the game is to fill the digits into a 9 × 9 grid so that each column, each row, and each of The 3 × 3 gridlines that make up the main grid (also called "box", "block" or "region") contain all digits 1 through 9. The puzzle adjustment structure provides a completed grid of sections, each well-established puzzle has a single complete solution.

3 sizes
- Size 6x6 cells divided into 2x3 areas
- Size 9x9 cells divided into 3x3 areas
- Size 12x12 cells divided into 4x3 areas

Thanks