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CHESS GLOSSARY / BASICS

King

The king moves one square in any direction and must never be left under attack. Checkmating the opposing king is the objective of chess.

King chess term — branded learning card

King: a practical example

In a middlegame with queens on the board, the king often needs pawn cover and limited exposure. In a simplified endgame, the same king can become an active attacking piece. Its legal movement does not change; the danger around it does.

How to use the idea in your games

Before making any move, confirm that your own king remains safe. Kings also attack adjacent squares, so they may not stand next to one another.

A useful study question

Can you explain king 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

Check, Checkmate, King activity 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™.