Sudoku Notepad Calendar 2025. Challenge your mind every day of the year with the sudoku 2025 desk calendar, featuring original puzzles by nikoli, the pioneers of sudoku. Every puzzle in this calendar is created by nikoli, the best sudoku makers in the world—not a computer—to balance toughness and.
Every puzzle in this calendar is created by nikoli, the best sudoku. Every puzzle in this calendar is created by nikoli, the best sudoku makers in the world—not a computer—to balance.