Underpromotion: a practical example
A knight promotion may give check with a fork that a queen could not create. A rook promotion can sometimes avoid stalemate when a queen would cover too many escape squares. These are concrete tactical choices, not style preferences.
How to use the idea in your games
Compare every legal promotion when the result is unclear. Do not accept an analysis interface's automatic queen selection as proof that the alternatives are irrelevant.
A useful study question
Can you explain underpromotion 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
Promotion, Fork, Stalemate 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™.