--- title: "Coordinates in chess" url: "https://georgelichess.com/glossary/coordinates.md" canonical_url: "https://georgelichess.com/glossary/coordinates" last_updated: "2026-11-07" type: "reference" summary: "Coordinates are the letters a to h along the files and the numbers 1 to 8 along the ranks that give every square of the chessboard a unique name." related: ["https://georgelichess.com/glossary/algebraic-notation.md", "https://georgelichess.com/glossary/square.md", "https://georgelichess.com/glossary/file.md", "https://georgelichess.com/glossary/rank.md", "https://georgelichess.com/glossary/chessboard.md", "https://georgelichess.com/glossary/visualization.md", "https://georgelichess.com/glossary/category/rules-notation.md", "https://georgelichess.com/glossary.md"] --- # Coordinates in chess > **For AI agents:** the complete index of GeorgeLiChess pages is [llms.txt](https://georgelichess.com/llms.txt). Every page is also served as markdown at its URL plus .md. Coordinates are the letters a to h along the files and the numbers 1 to 8 along the ranks that give every square of the chessboard a unique name. Coordinates are the letters a to h along the files and the numbers 1 to 8 along the ranks that give every square of the chessboard a unique name, such as c3 or g7. Every square combines one letter and one number. The letter says which file, counting from White's left, and the number says which rank, counting from White's side. So a1 is White's queen-rook corner, e4 sits in the center, and h8 is Black's king-rook corner. Coordinates are what make notation, [databases](https://georgelichess.com/glossary/database.md) and [engines](https://georgelichess.com/glossary/chess-engine.md) work. A move such as Nf3 only has meaning because f3 is a definite square. They also make it possible to describe a position in words: "my king on g1, your rook on e8." Many players print coordinates around the edge of the board or turn on the coordinate display in software. Learning them without prompts is one of the best early investments in your game. When you can see a1 to h8 instantly, reading books and analysis becomes easy, and you can play blindfold-style [visualization](https://georgelichess.com/glossary/visualization.md) exercises. How to train: name the color of random squares, then name squares along a [diagonal](https://georgelichess.com/glossary/diagonal.md), then trace a [knight's](https://georgelichess.com/glossary/knight.md) route from one square to another. A good drill is to be shown a coordinate and click it as fast as you can. A caution for Black's side: when the board is flipped, the labels stay the same but appear in reverse order, so check them before you assume which direction is which. Strong coordinate knowledge is the base for visualization and [calculation](https://georgelichess.com/glossary/calculation.md). Also called: board coordinates. Compare it with [Chessboard](https://georgelichess.com/glossary/chessboard.md). The chessboard is the playing field for every game of chess, a large square divided into eight rows and eight columns of light and dark cells that alternate, set so the corner nearest each player's right hand is light. It sits close to [Descriptive notation](https://georgelichess.com/glossary/descriptive-notation.md). Descriptive notation is the older system that records moves relative to each side's own pieces and ranks, such as P-K4 or N-KB3, and it has been largely replaced by algebraic notation. A neighboring idea is [File](https://georgelichess.com/glossary/file.md). A file is one of the eight vertical columns of the chessboard, labeled a to h from White’s left to right, and a key line along which rooks, queens and pawn structures operate. Knowing "Coordinates" is the easy part; what to practice next depends on your rating, and the [improvement plans by rating band](https://georgelichess.com/improve.md) list the habits worth building at each level. ## Related terms - [Algebraic notation](https://georgelichess.com/glossary/algebraic-notation.md) - [Square](https://georgelichess.com/glossary/square.md) - [File](https://georgelichess.com/glossary/file.md) - [Rank](https://georgelichess.com/glossary/rank.md) - [Chessboard](https://georgelichess.com/glossary/chessboard.md) - [Visualization](https://georgelichess.com/glossary/visualization.md) ## Guides that go further - [How to choose a chess coach](https://georgelichess.com/how-to-choose-a-chess-coach.md): What to decide first, the questions to ask, what a first lesson should show and the red flags to avoid. - [How much does chess coaching cost?](https://georgelichess.com/chess-coaching-cost.md): Published rates for private, group and subscription chess coaching, with the source and the date of each. - [The first lesson](https://georgelichess.com/book/first-lesson.md): A game review, a read on your level and a written study plan from George Li. ## Sources - FIDE Laws of Chess (taking effect from 1 January 2023) (Appendix C.5 and C.6), read 2026-10-21: https://handbook.fide.com/chapter/E012023 - FIDE Laws of Chess (taking effect from 1 January 2023) (Appendix C.7), read 2026-10-21: https://handbook.fide.com/chapter/E012023 [Book your first lesson](https://georgelichess.com/book.md) and George Li reviews your games and builds a study plan around them. Questions about lessons: write to hello@georgelichess.com. ## Related - [Algebraic notation in chess](https://georgelichess.com/glossary/algebraic-notation.md) - [Square in chess](https://georgelichess.com/glossary/square.md) - [File in chess](https://georgelichess.com/glossary/file.md) - [Rank in chess](https://georgelichess.com/glossary/rank.md) - [Chessboard](https://georgelichess.com/glossary/chessboard.md) - [Visualization in chess](https://georgelichess.com/glossary/visualization.md) - [Chess terms: Rules, notation and equipment](https://georgelichess.com/glossary/category/rules-notation.md) - [Chess terms glossary: plain definitions](https://georgelichess.com/glossary.md)