--- title: "Long side in chess" url: "https://georgelichess.com/glossary/long-side.md" canonical_url: "https://georgelichess.com/glossary/long-side" last_updated: "2026-11-07" type: "reference" summary: "The long side is the side of a pawn's file with more files between it and the edge of the board, giving a rook more room to check from far away." related: ["https://georgelichess.com/glossary/short-side.md", "https://georgelichess.com/glossary/checking-distance.md", "https://georgelichess.com/glossary/rook-endgame.md", "https://georgelichess.com/glossary/philidor-position.md", "https://georgelichess.com/glossary/vancura-position.md", "https://georgelichess.com/glossary/category/endgames.md", "https://georgelichess.com/glossary.md"] --- # Long side 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. The long side is the side of a pawn's file with more files between it and the edge of the board, giving a rook more room to check from far away. The long side is the side of a pawn's file with more files between it and the edge of the board, giving a rook more room to check from far away. The long side is the half of the board with more files between the pawn and the edge. If the pawn is on the f-file, the long side is the queenside, from the a-file to the e-file, while the [short side](https://georgelichess.com/glossary/short-side.md) is the g- and h-files. The long side matters because checks from a distance are far stronger than checks from close up. A rook checking from the long side can stay far from the enemy king, so it cannot be attacked, and it can keep checking along a rank until the king runs out of useful moves. For this reason the defending rook is generally placed on the long side, from where it can check at a distance of several files. The defending king usually goes the other way, to the short side, which leaves the long side clear for the rook. Decide the placement by counting files rather than by memory, since the answer changes with the pawn's file. A frequent error is to check from the short side, where the rook is soon too close to the enemy king or runs out of [squares](https://georgelichess.com/glossary/square.md). Another is to forget that the pawn's file determines which side is long: a pawn on the d-file has three files to the left and four to the right, so the long side is the kingside. ## Example position Black to move. With the pawn on the f-file, the a- to e-files form the long side. Black's king shelters on the short side at g8, while the rook on a1 stays on the long side, from where Ra6+ checks the white king along the sixth rank from four files away. Position (FEN): `6k1/1R6/4KP2/8/8/8/8/r7 b - - 0 1` Also worth reading is [Checking distance](https://georgelichess.com/glossary/checking-distance.md). Checking distance is the space a defending rook keeps from the enemy king, usually a long way off, so it can give a series of checks from the side or behind without being attacked. It sits close to [Vancura position](https://georgelichess.com/glossary/vancura-position.md). The Vancura position is a drawing setup against a rook pawn on the sixth rank with its rook in front: the defending rook attacks the pawn from the side, and the defending king waits on the far side of the board. If "Long side" has cost you half a point, a [first lesson](https://georgelichess.com/book/first-lesson.md) is a good place to find the pattern behind it: George Li goes through your games and builds a plan. ## Related terms - [Short side](https://georgelichess.com/glossary/short-side.md) - [Checking distance](https://georgelichess.com/glossary/checking-distance.md) - [Rook endgame](https://georgelichess.com/glossary/rook-endgame.md) - [Philidor position](https://georgelichess.com/glossary/philidor-position.md) - [Vancura position](https://georgelichess.com/glossary/vancura-position.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. [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 - [Short side in chess](https://georgelichess.com/glossary/short-side.md) - [Checking distance in chess](https://georgelichess.com/glossary/checking-distance.md) - [Rook endgame in chess](https://georgelichess.com/glossary/rook-endgame.md) - [Philidor position in chess](https://georgelichess.com/glossary/philidor-position.md) - [Vancura position in chess](https://georgelichess.com/glossary/vancura-position.md) - [Chess terms: Endgames](https://georgelichess.com/glossary/category/endgames.md) - [Chess terms glossary: plain definitions](https://georgelichess.com/glossary.md)