How to Play Quoridor: A Beginner's Guide

If you already know the rules and want the shape of good decisions rather than the letter of the law, this is the page for you. For the formal statement of every rule, see The Complete Rules; this page assumes you have read it, or that you already know how a pawn moves, how a wall goes down, and why a wall can never seal someone in completely.

Your first three moves

Open by walking straight down the middle of the board — one square forward, then another, then another, ignoring walls entirely for now. This feels too simple to be advice, but it is the correct opening for a reason. On an empty board every column is the same length to your goal, so the center is not shorter — it is safer: it keeps a wall's worth of open board on both your left and your right, so a wall placed against either side later still leaves you room to route around it. Start in a side column instead and a single wall against the near edge can do far more damage, because you have already given up the space on one side. Every step you take down the middle is also progress that cannot be undone, and there is nothing for your opponent to punish yet, because you have not created a weakness — you have simply gotten closer while staying flexible.

Three moves each straight down the middle. Blue has reached e4 and Red e6, and on an open board each pawn is exactly five steps from home.

In the centre a single wall costs little. With e4h across Blue's path, Blue sidesteps to d4 and heads north: six steps instead of five.

Against the edge the same wall bites harder. a4h leaves Blue on a4 no room to the left, so the detour runs two files across: seven steps instead of five.

New players often feel an urge to do something more interesting with their first few turns: place a wall immediately, or angle off to one side to "develop" a position the way you might in chess. Resist it. A wall placed before either player has committed to a path barely affects anything, because there is so much open board left for a path to route around it. You are not skipping strategy by advancing straight ahead — you are deferring it to the point in the game where it actually pays off, which is once paths start to matter.

A wall placed before anyone has committed barely matters. On an open board e5h adds a single step to both routes and costs its owner a wall for almost nothing.

Read the board as two races, not a maze

The single biggest shift in how a beginner starts to play well is learning to stop looking at the board as a maze to navigate and start looking at it as two numbers: your shortest path length to your goal, and your opponent's. Every move either of you makes changes one or both of those numbers, and the game is simply the story of those two numbers heading toward zero — whoever gets there first wins.

Read the board as two numbers, not a maze. Here Blue needs six steps and Red four, and every move either player makes changes one of those counts.

This reframing does most of the strategic work for you. A pawn move you are considering either shortens your own number by one, which is almost always worth doing, or it does nothing useful. A wall you are considering should be judged by how many squares it adds to your opponent's number versus how many, if any, it adds to yours — walls are terrain, and terrain affects whoever has to cross it, including you, if your own path happens to run through that stretch of the board. Get in the habit of actually counting, even roughly, rather than eyeballing whether a wall "looks like it blocks them." A wall that looks intimidating but adds only two squares to a nine-square lead is not doing its job.

The mistake almost everyone makes once

Here is the single most common beginner mistake, and it is worth naming directly, because naming it is most of the cure: spending a wall early to slow an opponent who was not yet ahead of you. It happens because placing a wall feels active — it feels like you are doing something to your opponent — while walking forward feels passive, even in the many positions where walking forward is the stronger move. The result is a player who has burned three or four walls by the midgame trying to control an opponent who was never actually winning the race, and who now has nothing left in reserve for the moment later on when a wall would have actually mattered.

The tell that you are making this mistake is simple: before you place a wall, ask whether your opponent is currently ahead of you in path length. If they are not — if you are even with them or already ahead — a wall you place right now is mostly just a wall you no longer have. Walk instead, and keep the option open for later.

When a wall is actually worth it

A wall earns its place when one of two things is true. Either your opponent is ahead of you and the wall adds more to their path than it adds to yours — the clean, common case — or the wall sets up a shape where a second wall, placed later, will be far more effective than either wall would have been alone, because walls that share a corner or extend a line already on the board close off more ground per wall than walls placed in isolation. Walls anchored against a board edge are usually the strongest of all, since the edge already removes half of the ways around them.

Walls anchored on an edge work together. a4h and c4h, pinned against the left side, force Red on b5 across to the e-file: seven steps instead of four, for two walls.

Before committing to a wall, check what it does to your own path too. The rule that no wall may completely seal off a goal guarantees your opponent always has some route left, but nothing stops a wall from being neutral, or even bad, for you specifically — plenty of walls that lengthen an opponent's path lengthen yours by exactly the same amount, because your own route also runs through that part of the board. Those walls are not worth placing. Save them for a spot where the cost falls unevenly.

A wall can cost you as much as it costs them. e5h stretches Red's route from five steps to six, and Blue's by exactly the same, because both paths run through the e-file.

Noticing you are behind

You will not always be the one ahead, and the game rewards noticing it early. The habit that catches this reliably is the same one from earlier: compare the two path lengths directly, rather than going on a general sense of how the game feels. A position can look fine — your pawn is near the center, you still have walls in reserve — while you are actually three or four squares behind in the number that decides the game. Check the count, not the vibe, every few turns, and especially right after your opponent places a wall, since that is exactly when the gap tends to move.

A position can feel comfortable and still be losing. Blue sits in the centre on e5, but the walls on rank 6 stretch Blue's route to six steps while Red, on e3, needs only two.

What to do about it

Being behind changes what a wall is worth to you. When you are ahead, a wall you place has to beat the option of simply walking forward, which is a high bar to clear. When you are behind, walking forward does not close the gap on its own — your opponent is also walking forward, so the distance between your two numbers stays the same turn after turn. Closing a gap requires making your opponent's path longer than yours, which means being behind is exactly the moment a well-placed wall stops being optional and starts being necessary. Look for a wall that adds more to their path than it adds to yours, place it, and recheck the numbers on your very next turn rather than assuming it worked the way you pictured it.

When you are behind, look for a wall that costs them more than it costs you. e2h adds a step to Red's route and nothing to Blue's, narrowing the gap from four to three.

If you are behind and cannot find a wall that improves the gap, take the best pawn move available and reassess next turn. A bad wall placed out of frustration usually costs you more than it costs your opponent, because you are the one left with one fewer wall for the position where it would have actually counted.

From here, Strategy covers the ideas that separate a solid player from a strong one — reading wall efficiency more precisely, when to race instead of block, and the traps that punish a purely reactive game. The Glossary has quick definitions if a term here was unfamiliar, and The Complete Rules has the full formal statement this guide assumes you already know.