"数读手纸" can be translated as "counting toilet paper" in English. However, if this phrase is meant to convey a specific concept, title, or name, the translation might need to be adjusted for context or cultural nuances. If it's a creative or idiomatic expression, please provide more details for a more accurate translation.

If you and o don't know what "Sudoku" is, then first get some training through Wiki.

Sudoku is a mathematical puzzle game that originated in Switzerland at the end of the 18th century, later developed in the United States, and popularized in Japan. The puzzle is a square shape made up of nine grids (i.e., 3 grids wide × 3 grids high), and each grid is further divided into a smaller nine-grid section. In each small nine-grid section, fill in the numbers 1 to 9 (though it doesn't necessarily have to be numbers; for example, letters like a, b, c... can also be used), ensuring that every column and every row of the entire large nine-grid section contains no repeated numbers. This game requires only logical thinking, and has nothing to do with arithmetic operations. Although the rules are simple, the arrangement of numbers can change endlessly, so many educators believe Sudoku is a good way to exercise the brain. Later, due to the popularity of Sudoku, many similar mathematical puzzle games were derived, such as Kakuro and Killer Sudoku.

It sounds like a pretty cool game! Even cooler is that Sudoku fans can now spend $5 on a roll of Sudoku toilet paper to make full use of their bathroom time (though from now on, going to the toilet will require developing the good habit of carrying a pen).