How to Win at Gomoku: A Practical Guide to Better Decisions

There is no move or opening that wins every Gomoku game. What separates players who win more often is decision-making: they miss fewer threats, they make their opponent respond more often, and they see double threats a move earlier. This guide turns those habits into a routine you can use in your next game.

It pulls together ideas from three other guides: strategy for the principles, openings for the first moves, and tactics for the shapes. You do not need to read them first, but each section links to the details.

What actually wins games

At beginner and intermediate level, most games are decided in one of two ways:

1. Someone misses a threat. An open three or a four goes unanswered, usually on a diagonal.
2. Someone makes a double threat. Two threats from one move — a four-three, a double three or a double four — and the opponent can only stop one.

Getting better means reducing the first and creating the second. Everything below serves one of those two goals.

Avoid one-move blunders

Before every move, check the position as your opponent sees it:

• Does my opponent have a four? I must block it.
• Does my opponent have an open three — straight or broken, in any direction? I must answer it, unless I can make a four that leads somewhere.
• After my move, can my opponent make a move that blocks me and threatens at the same time?

This takes a few seconds and prevents most losses at every level. It is worth slowing down for, even on a clock.

Recognise open threes early

The open three is the earliest shape that demands an answer, and the last moment when defence is easy. Train yourself to see three kinds:

• Straight: · X X X ·
• Broken: · X X · X ·
• Diagonal versions of both — the most commonly missed.

If you can see your opponent's threes the moment they appear, you will rarely face a four you cannot handle.

Force responses

A forcing move takes away your opponent's choice: they must answer it or lose. Fours force an immediate block; open threes force an answer next turn. The more of your moves are forcing, the fewer free moves your opponent gets to build their own threats.

Forcing moves are also limited. Every four you play gives your opponent a stone at the completion point. A four that leads nowhere has used up one of your resources and given your opponent a free defensive stone. Force when it builds toward a double threat, not just because you can.

Create double threats

A double threat comes from an empty point shared by two of your lines. Spot those points and you can see your winning moves before they exist.

A practical method:

1. Look at your lines of two and three.
2. Find empty points where two of them cross.
3. Ask: if I play there, does each line become a threat — a four or an open three?
4. If only one line would, what single quiet move would make the other ready too?

Step 4 is the important one. Strong players often play a quiet-looking move whose only purpose is to make a future crossing point deadly. Your opponent has to see that point to stop it.

Attack while defending

When you must block, look at all the points that stop the threat and pick the one that also extends your own line. That block costs your opponent their tempo, because now they must respond to you. The strategy guide shows an example of a block that turns into an open three.

Choose the correct block

Not all blocks are equal. An open three can usually be stopped at either end, but often only one end is safe.

When choosing a block, ask what your opponent would do with each empty point you leave. The right block is the one that removes their best follow-up, not the one closest to your own stones.

Avoid purely reactive play

Players who only block feel safe for a while and then lose to a double threat. Each block answers one threat but builds nothing, so the attacker keeps the initiative and keeps adding lines until two of them cross.

To break the pattern, look for a four of your own. Even one forcing move changes who is choosing the next point. If you have no four, look for blocks that build, and if you have neither, place your quiet moves on points your opponent's lines share.

Think in sequences

Calculating in Gomoku is easier than it looks, because forcing moves have few answers. A four has exactly one answer; an open three has two or three. Sequences of forcing moves are therefore narrow and can be read several moves deep.

When you have a four available, try this:

1. Play the four in your head. Note the one forced block.
2. Do you now have another four, an open four, or a four-three?
3. Repeat until you either win or run out of fours.

A sequence that ends in a five or an open four is a VCF — victory by continuous fours. If you find one, play it: your opponent never gets a free move. If the sequence fizzles out, keep your fours for later. You will need them.

Endgame awareness

Late in a game the board is crowded, and many lines are already dead. Three habits help:

• Recount the space. A line needs five free points in a row to ever matter. Lines squeezed between opposing stones are not worth defending or extending.
• Remember the rule set. On 5Row with the two-end rule on, an exact five sealed at both ends does not win, so a line needs six free points between blockers to be dangerous — while an overline of six wins regardless.
• Watch the clock. In timed games, a quick, safe move beats a slow, perfect one. On 5Row each move has its own countdown, 45 seconds by default.

Move-selection checklist

1. Can I make five?
2. Does my opponent have a four? Block it.
3. Can I make an open four, a four-three, or start a VCF? Do it.
4. Does my opponent have an open three? Answer it — with a block that builds, or with a four that forces first.
5. Is there an empty point shared by two of my lines? Prepare it or play it.
6. Is there a point shared by two of my opponent's lines? Take it if I can do so while building.
7. After my move, what is my opponent's best reply?

A ten-minute training routine

• Five minutes of play. One or two quick games against a computer at a level where you win about half the time. 5Row's practice mode has Easy, Normal and Hard.
• Three minutes of review. For each loss, find the move where your opponent made two threats at once. Then go back one or two moves and find the empty point you should have taken.
• Two minutes of patterns. Recreate one shape from the tactics guide — an open three, a four-three — and look for it in your next game.

Short, regular sessions beat occasional long ones. The goal is to make threat-spotting automatic, which only repetition does.

Common mistakes

• Blocking only fours. By then the attacker usually has a follow-up.
• Spending fours early. Forcing moves are a limited resource.
• Ignoring the shared point. Double threats are built on empty points two lines share; find them for both sides.
• Blocking the closer end by habit. Check which end your opponent actually needs.
• Never reviewing losses. Most losses repeat the same one or two patterns.

On 5Row: five or more in a row wins, there are no forbidden moves, and the two-end rule is on by default. Practise in practice mode, then take what you learn into a ranked match or a game with friends. For the exact rule cases, see the Gomoku rules.

FAQ

Is there a way to always win at Gomoku?

Not in practice. Computer analysis shows the first player can force a win in freestyle Gomoku on 15×15 with perfect play, but that strategy is far beyond human memory. Real games are won by better decisions, not secret moves.

Should I always go first if I can?

Moving first is an advantage, so in a one-off game, yes. For improvement, play both sides: defending as the second player is where you learn to see threats early.

How long does it take to get good?

It depends on how often you play and whether you review your games. Reviewing losses is the fastest route: most beginners keep losing to the same one or two patterns, and fixing those changes results quickly.

What should I do when I am losing?

Look for fours. A losing position often still has one or two forcing moves, and forcing moves sometimes create a counter-threat your opponent overlooks.