Tactical Moves

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Tactical moves in the context of chess program move classification are moves which immediate change material balance and capture a piece or cause a promotion. Those moves are obviously irreversible, and are subject of quiescence search, in particular with positive static exchange evaluation.

In a wider sense, tactical moves are also quiet- or intermediate moves, like moves (double) attacking more valuable (including checking the king) or hanging pieces, offer deflection sacrifices, starting a Petite Combination [1], or in general moves which some forced properties.