Definitions

1. noun

A puzzle game or activity where a 9x9 grid, divided into nine 3x3 sub-grids or regions, is filled with numbers from one to nine such that each row, column, and region contains each number exactly once.

“She solved the sudoku in under 10 minutes.”

2. verb

To fill (a grid or puzzle) with numbers according to the rules of sudoku.

“He spent the evening sudoku-ing the puzzle.”