Undefended pieces

An undefended piece has no friendly unit protecting it. Capturing it may still be illegal or losing if the square is guarded — but “nothing defends this” is the signal that a tactic might exist.

The signal

Mark your undefended pieces, then the opponent’s. Do not stop at the one piece you planned to take. Completeness is the habit: queens and rooks left loose after a recapture are as important as a forgotten knight on the rim.

Why it is easy to miss in a game

You are busy with a plan. A piece that was defended last move is not defended after you (or the opponent) moved the defender. Puzzle training often starts from a position that already screams “take the hanging queen.” In a game the hang lasts one tempo and then is gone.

What WayChess trains

You practise listing every undefended unit on both sides, with immediate feedback. Combined with attacked pieces, this is the core of “is anything hanging?”

Try the guest demo or see all habits.