1. Basic Definition

1. Basic Definition

Threats | The possibility of harming the opponent through one's own moves.

blow | A move that removes objects or directly threatens them.

attack | threatening moves.

check | attack the king.

defense | Countering the attack, removing the threat.

Equal Exchange | Mutual elimination to maintain numerical equality on the board.

inequality exchange | Reciprocal elimination that results in either a numerical advantage or a numerical inferiority.

led | A lively match with a constant threat to the opponent.

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