가로, 세로, 그리고 9등분된 작은 정사각형 안에 1부터 9까지의 숫자를 중복 없이 채워 넣는 숫자 퍼즐 게임.
a puzzle in which players insert the numbers one to nine into a grid consisting of nine squares subdivided into a further nine smaller squares in such a way that every number appears once in each horizontal line, vertical line, and square.
예문:
"He spent his entire commute solving a challenging sudoku in the morning newspaper."
"Sudoku is known to help improve logical thinking and concentration."