Positional draw
A drawn result forced by a setup — a fortress or perpetual — despite a big material deficit.
A positional draw is when the defender, though down material, holds by a permanent mechanism: a fortress the stronger side can't break, a perpetual check that never ends, or a stalemate resource. The material count says one thing, but the position simply can't be won.
Recognising a positional draw works both ways: as the defender it's a lifeline to steer toward when you're losing, and as the attacker it's the trap to avoid when converting. Fortresses with opposite-coloured bishops and rook-versus-minor-piece holds are classic examples.
Knowing that certain material-down positions are dead draws saves lost games and stops you trading into a 'winning' ending that can't actually be won.
As the stronger side, forcing matters into a known fortress; as the defender, missing the drawing setup and playing on into a loss.
Related terms
See Positional draw in your own games
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