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Today’s puzzle is Sudoku 4×4. If you are new to Sudoku 4×4, please read Rule and Tutorial of Sudoku 4×4 first. Previous Sudoku puzzles are available from link buttons below (Puzzles will be refreshed). A PDF file for print is also available at the end of this article.

Sudoku 4×4 is a smaller size variant of Sudoku. Despite that size, it is more difficult than you may think and includes all the interesting parts of normal Sudoku. Sudoku 4×4 takes less time to solve. So it is suitable for killing time. I also recommend it to people whom normal Sudoku is too difficult for.

We make all puzzles have only one solution.

Today’s Puzzle

Problem 1

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