Sudoku Daily Calendar 2025. You should just pick a date on the calendar and select a daily sudoku puzzle for today. With a mix of puzzle variations to challenge all levels, such as irregular, diagonal, and sum sudoku, each page provides a unique puzzle to solve.

Every puzzle in this calendar is created by nikoli, the best sudoku makers in the world—not a computer—to balance toughness and solvability and keep. With a mix of puzzle variations to challenge all levels, such as irregular, diagonal, and sum sudoku, each page provides a unique puzzle to solve.