Sudoku Classic

About 4x4 Sudoku

Sudoku 4x4 is a simplified adaptation of the classic Sudoku puzzle, designed with beginners and children in mind thanks to its easy-to-follow format. The game features a 4x4 grid divided into four 2x2 subgrids, known as "regions." A few cells come pre-filled with numbers to provide helpful clues and guide players toward the solution.

Basic Rules

• Grid Structure: The puzzle consists of a 4x4 grid divided into four 2x2 regions.
• Pre-filled Numbers: Certain cells are already filled with numbers to help guide the solver.
• Objective: Complete the grid so that each row, column, and region contains the numbers 1 through 4 without repetition.

Additional Rules

• No Repetition: Each number can appear only once in every row, column, and region.
• Number Range: Only the numbers 1 through 4 are used to complete the grid.

Basic Solving Tips

• Single Possibility: When a cell is the only one in its row, column, or region that can hold a specific number, place that number there.
• Exclusion: If a number already appears in a row or column, focus on placing the remaining numbers within the corresponding region.
• Double Pairs: If two cells in a row, column, or region can only contain the same two numbers (e.g., 3 and 4), eliminate those numbers as possibilities from other cells in that area.
• Scan: Regularly check rows, columns, and regions to ensure all basic and advanced rules are followed throughout the puzzle.