Notation

What is a file in chess?

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File is a notation term: a column of squares of the chessboard. A specific file can be named either using its position in algebraic notation, a–h, or by using its position in descriptive notation. For example, "f-file" and "king bishop file" both denote the squares f1–f8 (or KB1–KB8 in descriptive notation). This matters because clear notation lets you replay, review, and share chess positions without confusion.

file FAQ

What is a file in chess?

File is a notation term: a column of squares of the chessboard. A specific file can be named either using its position in algebraic notation, a–h, or by using its position in descriptive notation. For example, "f-file" and "king bishop file" both denote the squares f1–f8 (or KB1–KB8 in descriptive notation). This matters because clear notation lets you replay, review, and share chess positions without confusion.

How do you get better at using a file?

Good notation makes review possible. Use the term to understand or reconstruct the game accurately.

Train this pattern on your own games

Reading a definition is not the same as spotting the pattern with a clock running. Chessiro's free game review runs Stockfish 18 over every move you play, names the concept behind each mistake, and turns the positions where it cost you into training puzzles. You can also see the idea in action in the classic games collection, where the greatest players in history demonstrate it.

Free game review

See where file decides your games

Chessiro reviews your games with an AI coach that names the concept behind every mistake, then drills you on the exact positions where it happened until you stop repeating them.