This Sudoku Ultimate game generates nearly 81 unique levels. The objective of puzzles is to fill a 9×9 grid so that each column, each row, and each of the nine 3×3 boxes contain the digits from 1 to 9 only one time each. Sudoku creates the crossword-like logic puzzles that exercise your brain. Solving a sudoku puzzle can be rather tricky, but the rules of the game are quite simple. Solving a sudoku puzzle does not require knowledge of mathematics; simple logic enough.