An outpost is a square in the opponent's half of the board where your piece can sit, and where no enemy pawn can attack it. Knights love these squares. A knight on a permanent outpost is often stronger than a bishop, because it cannot be driven off and it attacks squares of both colors from its perch.

The test

Three questions. Is the square on the fourth, fifth, or sixth rank, inside their position? Can one of your pieces occupy it safely? Can any of their pawns ever attack that square? If the third answer is no, you have an outpost. The usual reason a pawn can never attack it is that the pawns on the neighboring files have already moved past, or have been traded.

d5 and e5 are the famous ones for White when Black has played ...c5 or ...e5 and the neighboring pawns are gone. c5 and d6 show up in Sicilian structures. For Black, d4 and e4 are the matching squares when White's c-pawn or e-pawn has left.

💡 Chess Hint: Look at their pawn moves from three moves ago. A pawn that stepped forward gave you a square it can never control again.

How to plant the knight

Occupy the square with a piece that can be supported. A knight on e5 defended by a pawn on d4 is a fixture. A knight on e5 defended by nothing is a target they will take, and then you have traded a good piece for a moment of glory. Support it with a pawn if you can, or with two pieces if you cannot.

The route matters. Knights take two or three moves to reach a central outpost. Start the maneuver before the tactical sequence, not during it. A common path is knight from b1 to d2 to f3 to e5, or from c3 to e4 to d6. While the knight is walking, do not allow them to plug the square with a piece you cannot remove.

What the knight does from there

From d5 a knight eyes c7, e7, f6, b6, and the center. It blockades an isolated pawn, which is the plan in isolated queen pawn positions. It eyes the squares the enemy king would like. And it forces them to decide whether to give up a bishop for it. If their bishop is the only piece that can take the knight, making them trade that bishop is often the correct result. You get the bishop pair's absence, and the outpost square may be available to a second piece.

Do not capture a pawn with the outpost knight unless the capture wins the game or the pawn was more important than the square. Leaving the square to grab a wing pawn is the usual way a strong knight becomes an offside one.

Keeping their knight out

The clean defense is a pawn that still controls the square. If your c-pawn can take on d4, their knight will not live on d4. If the pawn has already moved, you need a piece blockade or a trade. Be willing to trade your worse bishop for their outpost knight. Refusing that trade because "bishops are worth more" is how you play the rest of the game a piece down in practical strength.

You can also occupy the square yourself before they do. A square cannot be an outpost for both sides at once if your piece is standing on it.

Frequently Asked Questions

Can a bishop use an outpost?

Yes, but a bishop on one square only works if the diagonal is open. A knight attacks useful squares even in a crowded position, which is why the word outpost usually means the knight.

Is a knight on the sixth rank worth a pawn?

Often it is worth more than a pawn in the middlegame, because it attacks the king and the remaining pieces. In an ending, calculate. An extra pawn and their knight off the board can be better than your knight on d6 and the pawn gone.

What if they can kick it with a pawn later?

Then it is a strong square, not a true outpost. Use it while it lasts, and have the knight's next square ready before the pawn arrives.

Find the square their pawns abandoned

Support a knight there and do not cash it in for a small pawn. If their knight arrives first, trade it. The broader plans are in chess strategy, and a stubborn outpost in your own game is a good position to show chess hints.

Analyze a position Isolated pawns

Try the line on the board with chess hints.