4x4 Hard Sudoku Puzzles
Challenge your brain with these free printable 4x4 hard Sudoku puzzles. Sharpen your mind with these simple and fun brain teasers. Download, print and enjoy hours of addictive puzzle-solving fun.
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4x4 Sudoku - Hard - 2
4x4 Sudoku - Hard - 1
4x4 Sudoku - Hard - 29
4x4 Sudoku - Hard - 20
4x4 Sudoku - Hard - 30
4x4 Sudoku - Hard - 33
4x4 Sudoku - Hard - 15
4x4 Sudoku - Hard - 5
4x4 Sudoku - Hard - 46
4x4 Sudoku - Hard - 18
4x4 Sudoku - Hard - 49
4x4 Sudoku - Hard - 37
4x4 Sudoku - Hard - 44
4x4 Sudoku - Hard - 9
4x4 Sudoku - Hard - 6
Basic Rules / How to Play
- Grid Size: The puzzle has 4x4 grid size made up of four 2x2 sub-grids.
- Unique Numbers: Each row, column, and sub-grid must contain all digits from 1 to 4 without repetition.
- Pre-Filled Numbers: The numbers given at the start of the puzzle must remain unchanged.
Need Help?
To get started, check out these instructions, goals and rules for how to solve Sudoku
How to Download & Print
Click the puzzle thumbnail to open the printable PDF. In the print dialog, ensure "Actual Size" is selected for the sharpest grid lines.
