A positional sacrifice is the deliberate giving up of material — a pawn, a minor piece, or more — without an immediate tactical payoff, in exchange for lasting positional benefits: improved piece activity, control of key squares, prolonged initiative, or a superior pawn structure.
Unlike a tactical sacrifice, which forces a concrete and calculable sequence, a positional sacrifice is based on an overall assessment of the position. The player executing it accepts that there is no instant proof — they are betting that their concrete advantages (an open file, an outpost for a knight, permanent pressure on the opponent) will outweigh the material deficit over time. A typical example: sacrificing a pawn to open a diagonal and activate a bishop, or giving up the exchange (a rook for a minor piece) to plant a knight on a strong square.
In practice, before committing to a positional sacrifice, ask yourself three questions: What concrete advantages do I gain immediately? Are those advantages durable, or can my opponent neutralize them quickly? Do I have enough active pieces to sustain the pressure? If the answers are positive, the sacrifice is genuinely worth considering.