--- title: "Evaluation in chess" url: "https://georgelichess.com/glossary/evaluation.md" canonical_url: "https://georgelichess.com/glossary/evaluation" last_updated: "2026-11-07" type: "reference" summary: "An evaluation is a numerical judgment of who stands better in a position, usually given in pawns from White’s point of view." related: ["https://georgelichess.com/glossary/centipawn.md", "https://georgelichess.com/glossary/evaluation-bar.md", "https://georgelichess.com/glossary/chess-engine.md", "https://georgelichess.com/glossary/engine-analysis.md", "https://georgelichess.com/glossary/blunder.md", "https://georgelichess.com/glossary/accuracy.md", "https://georgelichess.com/glossary/category/computer-chess.md", "https://georgelichess.com/glossary.md"] --- # Evaluation 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. An evaluation is a numerical judgment of who stands better in a position, usually given in pawns from White’s point of view. An evaluation is a numerical judgment of who stands better in a position, usually given in pawns from White’s point of view, where positive favors White and negative favors Black. An evaluation turns a position into a single number. Most [engines](https://georgelichess.com/glossary/chess-engine.md) express it in pawns from White’s side: plus one means White is roughly a pawn better, minus one means Black is. A value near zero means the position is balanced. When a forced [checkmate](https://georgelichess.com/glossary/checkmate.md) is found, the engine shows a mate in some number of moves instead of a pawn score. The number comes from many factors at once, including material, [piece activity](https://georgelichess.com/glossary/piece-activity.md), [king safety](https://georgelichess.com/glossary/king-safety.md), pawn structure and the threats available to each side. That is why a position can show a small evaluation even when one side has extra material but poor piece placement. When you read an evaluation, remember two things. First, small differences rarely matter in practice. A move that changes the score from plus 0.3 to plus 0.1 is not a [blunder](https://georgelichess.com/glossary/blunder.md), and a human opponent will not exploit it. Second, a large advantage on screen still needs technique to convert. Use big swings as signals to study a [mistake](https://georgelichess.com/glossary/mistake.md), but do not obsess over decimals. Compare the evaluation before and after your move to see how much a decision cost you. Also called: engine evaluation. It sits close to [Evaluation bar](https://georgelichess.com/glossary/evaluation-bar.md). The evaluation bar is a vertical or horizontal gauge beside the board that shows, with a bar of black and white, which side the engine thinks is better and by roughly how much. A neighboring idea is [Neural network engine](https://georgelichess.com/glossary/neural-network-engine.md). A neural network engine uses a trained neural network to evaluate positions, and NNUE, the efficiently updatable neural network added to Stockfish, combines such an evaluation with fast traditional search. Compare it with [Centipawn](https://georgelichess.com/glossary/centipawn.md). A centipawn is one hundredth of a pawn, the small unit engines use to report evaluations, so a score of 150 centipawns means the engine thinks one side is about one and a half pawns better. Computer terms such as "Evaluation" are most useful next to a coach who reads your games with you, which is how a [first lesson](https://georgelichess.com/book/first-lesson.md) with George Li works. ## Related terms - [Centipawn](https://georgelichess.com/glossary/centipawn.md) - [Evaluation bar](https://georgelichess.com/glossary/evaluation-bar.md) - [Chess engine](https://georgelichess.com/glossary/chess-engine.md) - [Engine analysis](https://georgelichess.com/glossary/engine-analysis.md) - [Blunder](https://georgelichess.com/glossary/blunder.md) - [Accuracy](https://georgelichess.com/glossary/accuracy.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 - [Centipawn in chess](https://georgelichess.com/glossary/centipawn.md) - [Evaluation bar in chess](https://georgelichess.com/glossary/evaluation-bar.md) - [Chess engine](https://georgelichess.com/glossary/chess-engine.md) - [Engine analysis in chess](https://georgelichess.com/glossary/engine-analysis.md) - [Blunder in chess](https://georgelichess.com/glossary/blunder.md) - [Accuracy in chess](https://georgelichess.com/glossary/accuracy.md) - [Chess terms: Computer chess and analysis](https://georgelichess.com/glossary/category/computer-chess.md) - [Chess terms glossary: plain definitions](https://georgelichess.com/glossary.md)