Legendary Sudoku

One of the most popular puzzle games in the world. Sudoku, is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids that compose the grid (also called "boxes", "blocks", "regions", or "subsquares") contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which for a well-posed puzzle has a unique solution. Features: - A huge number of puzzles. - Save your sudoku. - Intuitive interface. - Multiple difficulty levels. The new version is already in development.