Outpost — what it means in chess
A protected square in or near enemy territory that a knight or piece can occupy safely.
A protected square in or near enemy territory that a knight or piece can occupy safely.
[[board startfen="r1bqkb1r/pp3ppp/2np1n2/1N2p3/4P3/2N5/PPP2PPP/R1BQKB1R w KQkq - 0 7" caption="The Sveshnikov main line reaches its destination: a White knight lands on d5, where no Black pawn can ever attack it. That square was bought on move five and occupied on move ten." pgn="Bg5 a6 Na3 b5 Bxf6 gxf6 Nd5" notes="The structure from the backward-pawn story, six moves on. Black played ...e5 long ago, and the d5 square has belonged to White ever since — now comes the collection. White pins the knight that guards d5. Black chases the other knight first. It retreats, biding. Black grabs space — and leaves d5 further behind. White removes the last defender of d5. Black must wreck the kingside pawns to recapture. And the knight arrives. Count the Black pawns that could ever evict it: the c-pawn left the board on move three, and the e-pawn stands past the square. The knight on d5 is a permanent resident, and every plan White makes from here starts with that fact."]]
An outpost is a square in or near enemy territory that cannot be attacked by enemy pawns — usually because the pawns that could have done it have advanced past it or left the board — and that your own pawn ideally supports. A piece placed there cannot be evicted cheaply: the defender must either tolerate it, trade a valuable piece for it, or make a concession to remove it. Knights love outposts above all pieces, because a knight's value is almost purely a function of its square.
The Endgame Society glossary defines more than 240 chess terms — rules, notation, tactics, strategy, pawn structures, endgames, and openings — in language a beginner can act on rather than dictionary shorthand.