Gomoku Board: Sizes, Setup & Everything You Need to Know
Here's the funny thing about the gomoku board: it doesn't really exist. I mean, sure, you can buy one — but a "gomoku board" is just a Go board with a smaller grid drawn on it. Same wood, same black and white stones, same grid lines. For most of this game's 4,000-year history, people played gomoku on whatever Go board they already owned. So when we talk about a "gomoku board," we're really talking about a Go board being used for a faster, simpler game. This page covers the board sizes, what it actually looks like, how it differs from a Go board (spoiler: barely), what to look for if you're buying a wooden set, and how to set one up.
The Standard Gomoku Board Size (And Why It's 15×15)
The standard gomoku board is a 15×15 grid — that's 15 horizontal lines and 15 vertical lines, crossing to make 225 intersections where you can place stones. If that sounds familiar, it should: it's the same kind of board Go uses, just smaller (Go plays on 19×19, which is 361 intersections).
Why 15 and not 19? Because gomoku is a race to five, not a territory game. You don't need that much space — 19×19 would make most games drag, with players spending forever just wandering before any real fighting starts. 15×15 is the sweet spot: big enough that the first player (Black) doesn't auto-win every game, small enough that a game finishes in 10 to 30 minutes. It's also the size the pros use — every official Renju tournament runs on a 15×15 board.
So if someone asks "what is the standard gomoku board size?" — 15×15. Full stop. That's the one you'll see in tournaments, in serious apps, and on this site's play page.
Gomoku Board Sizes Compared: 9×9 vs 13×13 vs 15×15
You're not stuck with 15×15. Three sizes get real use, and each one changes the game more than you'd expect. Picking the right gomoku board dimensions is half the fun.
9×9 Board
Best for: Beginners & quick games
- • 81 intersections
- • Games last 2–5 minutes
- • Easier to see patterns
- • Great for learning
Tiny, fast, a little chaotic. On a 9×9, the edges creep into play fast, so you can't ignore them the way you do on bigger boards. Perfect for a coffee-break game.
13×13 Board
Best for: Intermediate players
- • 169 intersections
- • Games last 5–15 minutes
- • More strategic depth
- • Good balance of speed & complexity
The "I'm past the beginner stage" board. Close enough to 15×15 that real strategy works, but games don't sprawl. Honestly underrated.
15×15 Board ⭐
Best for: Standard & tournament play
- • 225 intersections
- • Games last 10–30 minutes
- • Official tournament size
- • Maximum strategic depth
The real deal. If you're playing competitively — Renju rules, the 26 openings, the whole bit — this is your board. Everything else is a warmup for this one.
What Does a Gomoku Board Look Like?
If you've never seen one, here's the mental picture: a square wooden board with a grid of thin black lines drawn across it, and a few small dots scattered on the intersections. Two bowls sit beside it — one holding glossy black stones, the other holding cream-white ones. That's it. It looks almost exactly like a Go board, because it is a Go board. (More on that in a second.)
A few things trip people up the first time they see a gomoku board:
- You place stones on the intersections, not in the squares. This is the single biggest difference from chess or Connect Four, where pieces go inside the boxes. In gomoku (and Go), stones sit where the lines cross. A 15×15 board has 225 of these crossing points, not 225 squares.
- The star points. Those little dots you see on the grid aren't decoration — they're reference markers. On a standard 15×15 board there are nine of them, arranged in a 3×3 pattern. They help players eyeball positions quickly and mark the center of each zone. The one dead-center is where the first move usually goes.
- The grid is just lines. No colors, no numbers, no labels. Unlike a chessboard with its alternating dark and light squares, a gomoku board is uniform — every intersection is identical. The strategy comes from the stones, not the board.
- Traditional material is wood and stone. A proper board is wood (often kaya, shin-kaya, or bamboo), and the stones are actual stones — black ones are slate, white ones are clamshell. That's the classic Japanese Go set repurposed for gomoku. Cheap sets use plastic, which works fine but feels, well, cheap.
Gomoku Board vs Go Board — What's the Difference?
Short answer: basically nothing, and also the grid size. Let me explain, because this question comes up constantly.
Gomoku and Go use the exact same equipment — same wooden board, same black-and-white stones, same "place on the intersection" rule. For centuries, nobody even made a separate "gomoku board." You grabbed the Go set and played five-in-a-row on it. (This is also why the English word "gobang" comes from the Japanese goban, meaning "Go board." People literally named the game after the board they played it on.)
The one practical difference: Go is played on 19×19, gomoku on 15×15. But here's the thing — you can absolutely play gomoku on a 19×19 Go board. You just won't use the outer edges much. Plenty of people play gomoku on a full Go board and ignore the extra space. It works fine. The 15×15 standard exists because it makes the game tighter and faster, not because the equipment is different.
So: can you play gomoku on a Go board? Yes, 100%. If you already own a Go set, you own a gomoku set. If you're buying new and only care about gomoku, a dedicated 15×15 board is cheaper and the games are better-paced. Learn more about the game itself →
Buying a Gomoku Board: What to Look For
If you're shopping for a gomoku board game set — whether it's a gift, a desk toy, or you just want the tactile feel of real stones — here's what actually matters. I'll skip the marketing fluff.
Material
- Wood (kaya, shin-kaya, bamboo): The classic. Looks great, feels solid, stones make a satisfying click. $30–150.
- Vinyl (roll-up): Cheap, portable, waterproof. Great for travel or kids. $5–15. Not pretty, but functional.
- Paper / cardboard: Basically free if you print your own. Fine for trying the game before you commit.
- Particle board with printed grid: The "$15 on Amazon" option. Works, but the grid wears off and stones slide. Buyer's remorse waiting to happen.
Stones
- Glass: The sweet spot for most people. Nice weight, satisfying sound, affordable. ~$20–40 for a set.
- Slate & clamshell (traditional): What the pros use. Beautiful, expensive, fragile. $100+.
- Plastic: Light, cheap, slides around. Fine for casual, annoying for serious play.
- Ceramic / melamine: Mid-range, durable, decent weight. Good compromise.
My honest take: unless you're collecting, skip the fancy kaya board. A bamboo or shin-kaya board with glass stones hits the sweet spot — it looks good on a shelf, plays well, and costs about the same as a mid-tier board game. The grid should be 15×15 (some sets sell as 19×19 Go boards — those work, but you're paying for space you won't use). Look for one with a center star point marked; it saves arguments about where the first move goes.
We're working on a full gomoku board game buying guide with specific set reviews. For now, the basics above will keep you from buying a dud.
Physical Board vs. Playing Online
Both have their place. A real wooden board is lovely for a slow Sunday game with a friend; playing online is what you do the other 350 days a year when no one's around and you want a quick match. Here's the honest comparison:
| Aspect | Physical Board | Playing Online |
|---|---|---|
| Cost | $10–50 for a basic set | Free |
| Opponent | Need a friend nearby | Play vs AI anytime |
| Portability | Limited | Play on any device |
| Experience | Tactile, traditional | Convenient, fast |
How to Set Up a Gomoku Board
Setting up takes about ten seconds. There's almost nothing to it, which is part of the game's charm — no shuffling, no dealing, no arranging pieces. Here's the whole thing:
- Place the board flat between the two players. Orient it so the grid looks square from both sides (it's symmetric, so this barely matters, but it's polite).
- Put the stone bowls on each side. Black on one side, white on the other. Convention says the weaker player or the guest takes black and moves first, but do whatever — it's not chess, there's no etiquette police.
- Black goes first. The first stone almost always goes on the center intersection (that's the marked star point in the middle). Here's why the center is the best first move →
- Take turns placing one stone per turn on any empty intersection. Stones don't move once placed — this isn't checkers.
- First to five in a row wins. Horizontal, vertical, or diagonal. Full rules here if you want the Renju variant with its forbidden moves.
That's the setup. The "board" is just a grid; the game is in the stones. If you want the longer version with diagrams, our how-to-play guide walks through it move by move.
Make Your Own Gomoku Board
Don't want to buy one? Totally fair — you can make a gomoku board out of anything that holds a grid. Grab a piece of paper and a ruler:
- Draw a 15×15 grid (15 lines each way). A 9×9 grid works too if you want a quick game.
- Mark a small dot at the center — that's your star point.
- Use coins, buttons, beads, or dried beans as stones. Pennies and dimes work great; two colors of M&M work less great because they get eaten mid-game (ask me how I know).
- Done. You're playing gomoku.
Or skip the drawing — we've got free printable gomoku boards in all three sizes, ready to go. Print, grab some coins, play. That's the beauty of this game: the barrier to entry is literally a piece of paper and whatever's in your junk drawer.
🖨️ Free Printable Gomoku Board
Need a board right now? Download and print a gomoku board for free — available in 9×9, 13×13, and 15×15. Just print, grab some coins or markers, and start playing!
Get Printable Board →Frequently Asked Questions
What size is a gomoku board?
The standard gomoku board is 15×15 — that's 15 lines each way, creating 225 intersections. This is the size used in all official Renju tournaments. Smaller 9×9 and 13×13 boards are also common for casual and beginner play.
Can you play gomoku on a Go board?
Yes, absolutely. Gomoku and Go use the exact same equipment — same wooden board, same black and white stones, same rule of placing stones on intersections. The only difference is grid size: Go uses 19×19, gomoku uses 15×15. But you can play gomoku on a 19×19 Go board just fine; you'll just use the center and ignore the edges. If you already own a Go set, you own a gomoku set.
How many intersections does a gomoku board have?
A standard 15×15 gomoku board has 225 intersections (15 × 15). A 13×13 board has 169, and a 9×9 board has 81. Remember: in gomoku you place stones on the intersections where lines cross, not inside the squares.
Do you place gomoku stones on the squares or the lines?
On the lines — specifically, on the intersections where two lines cross. This is different from chess or Connect Four, where pieces go inside the squares. It's the same placement rule as Go, which is why gomoku and Go can share the same board.
What is the best gomoku board size for beginners?
9×9 is best for absolute beginners — games are short (2–5 minutes), patterns are easy to spot, and you learn the core tactics fast. Once that feels comfortable, move up to 13×13, then 15×15 (the standard tournament size). Don't start on 15×15; the larger board makes it harder to see what's happening.
What is a gomoku board made of?
Traditionally, a gomoku board is made of wood — often kaya, shin-kaya, or bamboo — with black slate stones and white clamshell stones (the classic Japanese Go set). Modern sets use everything from vinyl roll-ups with plastic stones to bamboo boards with glass stones. The material affects feel and price, not gameplay.