Sudoku Expert

Sudoku Expert is a logic-based number-placement puzzle. The goal is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids (also called “boxes” or “regions”) contains all of the digits from 1 to 9 exactly once. The puzzle starts with some cells already filled with numbers, and the challenge is to complete the grid based on these initial clues. Sudoku puzzles come in various difficulty levels, from easy to very challenging, depending on the number and placement of the given numbers.