What is zugzwang in chess?

A position in which every legal move you have makes your position worse, and you are obliged to move anyway. The German word means "compulsion to move". It matters because chess has no pass: the obligation to move, normally invisible, becomes the thing that loses the game.

How do you pronounce zugzwang?

Roughly "tsook-tsvang", with the German z sounding like "ts". It is one of a handful of German words - along with Zwischenzug and Luft - that English chess simply borrowed rather than translating.

What is mutual zugzwang?

A position where whichever side is to move is the side that ends up worse off. Both players would rather pass, and neither may. Almost every king-and-pawn ending turns on one of these: the same position is a win or a draw depending only on whose turn it is.

What is the opposition?

Kings standing on the same line with one empty square between them. The player who does not have to move controls the position, because the other king must step aside and let its opponent through. The opposition is the standard way zugzwang is created and used in king-and-pawn endings.

Does zugzwang happen in the middlegame?

Rarely, because with many pieces on the board there is nearly always a harmless move available somewhere. It is an endgame idea: the fewer pieces left, the fewer waiting moves there are, and the more likely it becomes that everything you can legally do is bad.

How do you put someone in zugzwang?

By taking away the harmless moves and then handing over the turn. In practice this means fixing their pawns so they cannot be pushed, restricting their pieces so any move loses ground, and then playing a waiting move - or seizing the opposition, which is exactly a waiting move with the kings.

Zugzwang

Zugzwang is the position where you would love to pass - and chess does not let you. Every legal move makes your position worse, and you have to play one of them.

By Nethanel Bar, Co-founder & CEO

Last updated August 27, 2026

Chess has one rule that is so obvious nobody notices it: you have to move. You cannot pass. Almost always that is irrelevant, because almost always you have something harmless to do.

Zugzwang - German for "compulsion to move" - is what happens when you do not.

Black to move here. White's king is in front of the pawn and the black king has exactly five squares left.

Interactive board

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Black to move. Tap every square the black king may legally go to - and look at what each of them gives away.

Nothing is attacked. There is no threat. The entire problem is that it is Black's turn, and every legal move gives ground.

The opposition

The way that position was created has a name. When the two kings stand on the same line with exactly one square between them, the player who does not have to move is in charge - and that arrangement is called the opposition.

The kings face each other on the e-file with e6 between them: that is the opposition. Black cannot enter d6, e6 or f6 - two kings may never touch - so the only five legal moves all go sideways or backwards, and White walks through next move.

Take the opposition and hand the move over, and the enemy king has to let you past. That is what a waiting move is for, and it is most of the technique in king-and-pawn endings.

Now finish the job. Black has stepped aside to d7.

Interactive board

Black has given way to d7. Take the opposition back - put your king where Black is squeezed all over again.

Why it lives in the endgame

The more pieces you have, the more likely one of them has a harmless move available. With a rook and a knight and six pawns, there is nearly always somewhere to shuffle. With a king and a pawn, there is not.

That is why zugzwang is an endgame idea, and why endgames feel so different: the obligation to move stops being invisible and starts deciding games.

you are more likely to be in zugzwang when	because
few pieces are left	fewer legal moves means fewer harmless ones
your pawns are blocked	a pawn that cannot advance is a waiting move you do not have
your pieces are all doing a job	any move abandons whatever they were holding
the kings are in opposition	your king is the only piece left to move, and every square is a retreat

The reverse is the practical lesson: keep a spare pawn move in reserve. A harmless pawn tempo you have not spent yet is the thing that saves half of these endings.

Try it

Exactly the same position as the board at the top of this page - except that it is now White to move. Can White still force the win?

Common questions

What is zugzwang in chess?: A position in which every legal move you have makes your position worse, and you are obliged to move anyway. The German word means "compulsion to move". It matters because chess has no pass: the obligation to move, normally invisible, becomes the thing that loses the game.
How do you pronounce zugzwang?: Roughly "tsook-tsvang", with the German z sounding like "ts". It is one of a handful of German words - along with Zwischenzug and Luft - that English chess simply borrowed rather than translating.
What is mutual zugzwang?: A position where whichever side is to move is the side that ends up worse off. Both players would rather pass, and neither may. Almost every king-and-pawn ending turns on one of these: the same position is a win or a draw depending only on whose turn it is.
What is the opposition?: Kings standing on the same line with one empty square between them. The player who does not have to move controls the position, because the other king must step aside and let its opponent through. The opposition is the standard way zugzwang is created and used in king-and-pawn endings.
Does zugzwang happen in the middlegame?: Rarely, because with many pieces on the board there is nearly always a harmless move available somewhere. It is an endgame idea: the fewer pieces left, the fewer waiting moves there are, and the more likely it becomes that everything you can legally do is bad.
How do you put someone in zugzwang?: By taking away the harmless moves and then handing over the turn. In practice this means fixing their pawns so they cannot be pushed, restricting their pieces so any move loses ground, and then playing a waiting move - or seizing the opposition, which is exactly a waiting move with the kings.