What Is Check in Chess?
Check is when the king is directly attacked by an enemy piece and must be rescued immediately — it is not checkmate until escape is impossible.
Definition
Check is when a king is attacked by one or more enemy pieces. A player in check must immediately resolve it by moving the king, blocking the attack, or capturing the attacking piece. Failing to resolve check is an illegal move. Check is distinct from checkmate: in check, escape is possible; in checkmate, no escape remains and the game ends.
Example
White plays Qh5+. The Black king on e8 is now in check from the queen. Black must respond: Ke7 (escape), blocking with a piece (Qf7), or capturing the queen if possible. Black cannot ignore the check and play any other move.
Why It Matters for Your Chess
Understanding check is fundamental to chess. Checks are often used as forcing moves in combinations — they restrict the opponent to a single response, allowing the attacker to control the tempo. Many combinations work because only one square is safe for the king after a check.
Frequently Asked Questions
What is perpetual check?
Perpetual check is when one player can give an endless series of checks that the other player cannot escape without risking greater losses. The result is typically a draw by repetition — both players repeat the same position three times.
Can a king capture a piece to get out of check?
Yes — if capturing the attacking piece moves the king to a square not attacked by any other enemy piece, it is a legal way to escape check.
Practice Check in Your Games
FireChess detects tactical patterns like check in your games and shows you exactly what you missed — and how to find them next time.
Related Terms
Double Check
A double check is when two pieces simultaneously give check — the king must move since no single capture or block can stop both.
Castling
Castling is the only move in chess that moves two pieces at once — the king and rook — simultaneously tucking the king to safety.
Stalemate
Stalemate is a draw that occurs when the player to move has no legal moves but is not in check — a lifesaving resource for the losing side.
Checkmate
Checkmate is the end of the game — the king is in check with no legal move to escape, and the player who delivers it wins.