Chess engine: a practical example
An engine can test a tactical claim by exploring the opponent's strongest defenses. The interface may show a score, depth, and principal variation, but each is a description of a particular search rather than a guarantee that every future outcome is known.
How to use the idea in your games
Use engine analysis after games or in permitted study. In a live competitive game, outside assistance can violate fair-play rules. Understand the output instead of copying moves without explanation.
A useful study question
Can you explain chess engine in your own words, identify it in a position, and describe when the idea does not apply? Test the explanation on a legal board before relying on it.
Connect the ideas
Stockfish, Evaluation, Principal variation are useful next concepts. Follow the links to compare definitions and examples, then return to the complete chess glossary whenever an unfamiliar term appears.
Sources & further reading
References checked September 5, 2026. Linked services are independent of ChessRankings.com™.