Introduction

Welcome to the Sudoku Dictionary. This page contains an alphabetical list of terms that you will encounter while learning to play Sudoku, but might have trouble understanding at first. This dictionary is cross-referenced and contains links to related sites for your convenience.

Terms

column - A column is a vertical block of squares. In a classic game of Sudoku, each column will be nine squares high. When a column is filled in it must contain no duplicate values to be considered correct.
See also: region Sudoku

region - A Sudoku board is divided into equally-sized regions. A 9x9 Sudoku game board will contain 9 regions, each 3 squares high by 3 squares wide for a total of 9 squares. Like rows and columns, once a region is filled in it must contain no duplicate values to be considered correct.
See also: Sudoku

row - A row is a horizontal block of squares . In a classic game of Sudoku, each row will be nine squares wide. When a row is filled in it must contain no duplicate values to be considered correct.
See also: region Sudoku

Sudoku - a logic-based placement puzzle, also known as Number Place in the United States. The aim of the canonical puzzle is to enter a numerical digit from 1 through 9 in each cell of a 9×9 grid made up of 3×3 subgrids (called "regions"), starting with various digits given in some cells (the "givens"). Each row, column, and region must contain only one instance of each numeral. Completing the puzzle requires patience and logical ability. Although first published in 1979, Sudoku initially caught on in Japan in 1986 and attained international popularity in 2005. (Wikipedia)
See also: column region row