# Glossary

An dynamic guide to learning more about Sudoku.
**2x2** -- Technical term for a Sudoku puzzle using a 4x4 grid subdivided into a 2x2 set of 2x2 grids. This is the smallest possible size of sudoku. (Also, see 4x4 (standard)) Read Article -- Try a Puzzle

**2x3** -- Technical term for a Sudoku puzzle using a 6x6 grid subdivided into a 2x3 set of 3x2 grids. (Also, see 6x6) Read Article -- Try a Puzzle

**2x4** -- Technical term for a Sudoku puzzle using an 8x8 grid subdivided into a 2x4 set of 4x2 grids. Read Article -- Try a Puzzle

**2x5** -- Technical term for a Sudoku puzzle using a 10x10 grid subdivided into a 2x5 set of 5x2 grids. Read Article -- Try a Puzzle

**2x6** -- Technical term for a Sudoku puzzle using a 12x12 grid subdivided into a 2x6 set of 6x2 grids. Read Article -- Try a Puzzle

**2x7** -- Technical term for a Sudoku puzzle using a 14x14 grid subdivided into a 2x7 set of 7x2 grids. Read Article -- Try a Puzzle

**2x8** -- Technical term for a Sudoku puzzle using a 16x16 grid subdivided into a 2x8 set of 8x2 grids. Read Article -- Try a Puzzle

**3x3** -- Technical term for a Sudoku puzzle using a 9x9 grid subdivided into a 3x3 set of 3x3 grids. This is the original and traditional size of the Sudoku puzzle. (Also, see 9x9 standard) Read Article -- Try a Puzzle

**3x4** -- Technical term for a Sudoku puzzle using a 12x12 grid subdivided into a 3x4 set of 4x3 grids. (Also, see 12x12) Read Article -- Try a Puzzle

**3x5** -- Technical term for a Sudoku puzzle using a 15x15 grid subdivided into a 3x5 set of 5x3 grids. Read Article -- Try a Puzzle

**4x4 (standard)** -- Standard term for a Sudoku puzzle using a 4x4 grid subdivided into a 2x2 set of 2x2 grids. This is the smallest possible size of sudoku. (Also, see 2x2) Read Article -- Try a Puzzle

**4x4 (technical)** -- Technical term for a Sudoku puzzle using a 16x16 grid subdivided into a 4x4 set of 4x4 grids. More commonly referred to as a 16x16 Sudoku or sometimes a 'Super-sudoku'. (Also, see 16x16) Read Article -- Try a Puzzle

**6x6** -- Standard term for a Sudoku puzzle using a 6x6 grid subdivided into a 2x3 set of 3x2 grids. (Also, see 2x3) Read Article -- Try a Puzzle

**9x9** -- Standard term for a Sudoku puzzle using a 9x9 grid subdivided into a 3x3 set of 3x3 grids. This is the original and traditional size of the Sudoku puzzle. (Also, see 3x3) Read Article -- Try a Puzzle

**12x12** -- Standard term for a Sudoku puzzle using a 12x12 grid subdivided into a 3x4 set of 4x3 grids. (Also, see 3x4) Read Article -- Try a Puzzle

**16x16** -- Standard term for a Sudoku puzzle using a 16x16 grid subdivided into a 4x4 set of 4x4 grids. Sometimes referred to as a 'Super-sudoku'. (Also, see 4x4 (technical)) Read Article -- Try a Puzzle

**Beginner Puzzle** -- A Sudoku puzzle of any size which only requires a knowledge of easy level tactics to solve logically and includes extra given clues for the ease of the player.

**Box** -- A single subdivision of a Sudoku puzzle.

**Box/line Intersection** (or intersection removal) -- A medium level Sudoku tactic.

**Clue(s)** -- Any solution candidate to a square which was given at the start of the puzzle or has been filled by the player.

**Column** -- A verticle alignment of squares.

**Easy Puzzle** -- A Sudoku puzzle of any size which only requires a knowledge of easy level tactics to solve logically.

**Easy Tutorial** -- A Sudoku puzzle of any size which only requires a knowledge of easy level tactics to solve logically.

**Elimination** -- The deduction of the possibility of a specific candidate existing in a given square.

**Expert Tutorial** -- A Sudoku puzzle of any size which requires a knowledge of expert level tactics to solve logically.

**Forced Moves** -- An easy level Sudoku tactic in which all but one candidates are eliminated from possibly existing in a given box.

**Given Clue** -- Any clue that appears at the start of a puzzle.

**Hard Puzzle** -- A Sudoku puzzle of any size which requires a knowledge of hard level tactics to solve logically.

**Hard Tutorial** -- A Sudoku tutorial of any size which requires a knowledge of hard level tactics to solve logically.

**Hidden Pairs** -- An hard level Sudoku tactic.

**Hidden Quads** -- An hard level Sudoku tactic.

**Hidden Triples** -- An hard level Sudoku tactic.

**Intersection Removal** (or box/line intersection) -- A medium level Sudoku tactic.

**Latin Square** -- A square grid of any size which contains every number between 1 and the size exactly once in each column and row. Invented by Leonhard Euler.

**Locked Sets** -- The single hard level sudoku tactic. All other hard level tactics are specific types of locked sets.

**Medium Puzzle** -- A Sudoku puzzle of any size which requires a knowledge of medium level tactics to solve logically.

**Medium Tutorial** -- A Sudoku tutorial of any size which requires a knowledge of medium level tactics to solve logically.

**Naked Pairs** -- An hard level Sudoku tactic.

**Naked Quads** -- An hard level Sudoku tactic.

**Naked Triplets** -- An hard level Sudoku tactic.

**Order 4** -- The term used for a 4x4 grid latin square. Read Article -- Try a Puzzle

**Order 5** -- The term used for a 5x5 grid latin square. Read Article -- Try a Puzzle

**Order 6** -- The term used for a 6x6 grid latin square. Read Article -- Try a Puzzle

**Order 7** -- The term used for a 7x7 grid latin square. Read Article -- Try a Puzzle

**Order 8** -- The term used for a 8x8 grid latin square. Read Article -- Try a Puzzle

**Order 9** -- The term used for a 9x9 grid latin square. Read Article -- Try a Puzzle

**Order 10** -- The term used for a 10x10 grid latin square. Read Article -- Try a Puzzle

**Order 11** -- The term used for a 11x11 grid latin square. Read Article -- Try a Puzzle

**Order 12** -- The term used for a 12x12 grid latin square. Read Article -- Try a Puzzle

**Order 13** -- The term used for a 13x13 grid latin square. Read Article -- Try a Puzzle

**Order 14** -- The term used for a 14x14 grid latin square. Read Article -- Try a Puzzle

**Order 15** -- The term used for a 15x15 grid latin square. Read Article -- Try a Puzzle

**Order 16** -- The term used for a 16x16 grid latin square. Read Article -- Try a Puzzle

**Pinned Squares** -- An easy level Sudoku tactic.

**Pointing Pairs** -- A medium level Sudoku tactic. A type of intersection removal

**Puzzle Size** -- The dimensions of a puzzle.

**Remote Pairs** -- An expert level Sudoku tactic.

**Reserved Square(s)** -- A square or square which is limited to a specific number of possible solution candidates.

**Row** -- a horizontal alignment of squares.

**Square** -- A unit which a single candidate must occupy in a Latin Square or Sudoku puzzle.

**Swordfish** -- An expert level Sudoku tactic.

**WXYZ-Chain** -- An expert level Sudoku tactic.

**X-wing** -- An expert level Sudoku tactic.

**XY-Chain** -- An expert level Sudoku tactic.

**XYZ-Chain** -- An expert level Sudoku tactic.

**Y-Wing** -- An expert level Sudoku tactic.