Sudoku Classic

Sudoku 12x12 – Medium

Sudoku 12x12 – Medium is a step up from easy puzzles, offering a more balanced challenge for players familiar with Sudoku rules and ready to sharpen their logical thinking. This puzzle is played on a 12x12 grid and features a moderate number of pre-filled cells, encouraging players to apply strategy and problem-solving skills without being overwhelmed.

Grid Details

• Structure: A 12-row by 12-column grid
• Regions: Twelve 4x3 subgrids (each region contains 12 unique cells)
• Numbers Used: 1 through 12
• Clue Level: Moderate – enough to guide but still challenging

Goal of the Puzzle

Your objective is to fill every empty cell with a number from 1 to 12. Each number must appear exactly once in every row, column, and region. Careful observation and logical reasoning are key to success.

Core Rules

• No Duplicates: No number can repeat in a single row, column, or region.
• Complete the Grid: Use the given clues to logically place the missing numbers until the entire grid is filled.

Solving Tips for Medium-Level 12x12 Sudoku

• Single Possibility: If a cell has only one valid number that fits based on surrounding clues, fill it in.
• Elimination: Rule out numbers already present in a row, column, or region to narrow down cell options.
• Double Pairs: When two cells can only be two specific numbers, eliminate those numbers from other cells in the same group.
• Use Pencil Marks: Keep track of possible candidates for each cell to help visualize options.
• Work in Layers: Start by filling in obvious answers, then return to more complex sections with updated possibilities.

Who Is This Puzzle For?

This medium-difficulty Sudoku 12x12 puzzle is ideal for players who understand the basics and want a deeper, more engaging challenge. It’s also perfect for those transitioning from standard 9x9 puzzles to more advanced formats.