#Sudoku meaning manual#
#Sudoku meaning trial#

reflection symmetry on one orthogonal axis.Symmetry вЂ“ A Sudoku can have seven types of overall symmetry in its clue positions.Translational symmetry (each clue group takes the form n, n+1, n+2, n+3), (24 clues). Size вЂ“ Refers to the size of a puzzle or grid, and can be described as a composite (i.e.

#Sudoku meaning trial#

Note: the level of trial and error is usually not explicitly defined.

Satisfactory puzzle вЂ“ A puzzle that does not require trial and error (guessing).

In some variants regions are not equally shaped.

Region вЂ“ Another term for the boxes of a Sudoku.

Sudokus are always expected to be proper Sudokus unless the puzzle setter specifies otherwise.

Proper Sudoku вЂ“ A Sudoku with one solution.

In some variants nonets are not equally shaped.

Nonet вЂ“ Another term for the boxes or regions of a Sudoku.

(See Mathematics of Sudoku вЂ“ Minimum number of givens for details).

Minimum number of clues вЂ“ Refers to the minimum of all proper Sudokus.

Different minimal Sudokus can have a different number of clues.

Minimal вЂ“ A minimal Sudoku (or irreducible Sudoku) is a Sudoku from which no clue can be removed leaving it a proper Sudoku (has one solution).

Latin square вЂ“ A related puzzle, or number array, with only row and column constraints (omitting the box constraint).

In large Sudokus, such as 'Sudoku the Giant', elements may be alphanumeric, or a larger set of numbers, e.g. This term is often used in a mathematical context, especially for Sudokus larger than 9Г—9, when more than nine digits '1-9' are required.

Element вЂ“ A digit or number of the Sudoku.

Constraints вЂ“ The rules of a Sudoku that require each digit to appear only once in each row, column, and box.

In solving most Sudokus, this is usually a poor approach, but in the most difficult examples may be necessary. backtracking) and making a different guess.

#Sudoku meaning manual#

In the manual form, it indicates the effort of making a guess, and if found to be wrong, going back (i.e.

Backtracking вЂ“ A programming method to solve Sudokus, but can also describe a manual method.

Automorphic вЂ“ A property of some Sudokus where the digits (not just their positions) play a role in a type of symmetry.

each digit (or number) can occur only once in each row, column, and box and can be compactly stated as: 'Each digit appears once in each group.'ДЄn automorphic Sudoku. The One Rule encapsulates the three prime rules, i.e. Rows, columns and regions can be collectively referred to as groups, of which the grid has 27. The initially defined values are clues or givens. Horizontally adjacent rows are a band, and vertically adjacent columns are a stack. Boxes can also be called blocks or regions. A grid has 9 rows, 9 columns and 9 boxes, each having 9 cells (81 total). the puzzle) is a partially completed grid.

2.3 Variants with additional or different constraintsДЄ Sudoku (i.e.