What is sudoku?

Answer:
Sudoku is a puzzle with 9 rows and columns. The rows/columns are divided into 9 3x3 squares (you'll notice the bold lines; those are the things that separate the 3x3 squares.) that are indicated in bold lines. There are many kinds of sudoku. Sudoku was originally called Number Place.

It originated in Japan, hence the name, and was a challenge similar to crossword puzzles, which don't work well with kanji.
Contributor: Aggie80
First answer by JillianG. Last edit by Aggie80. Contributor trust: 4984 [recommend contributor recommended]. Question popularity: 86 [recommend question].