Setup and opening position
The fifteen-by-fifteen board starts empty. You place the first stone, the computer replies, and stones remain fixed for the rest of the game.
Gomoku
Be the first player to complete a continuous line containing at least five of your own stones.
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How to play
Be the first player to complete a continuous line containing at least five of your own stones.
- The fifteen-by-fifteen board starts empty. You place the first stone, the computer replies, and stones remain fixed for the rest of the game.
- Place one stone on any empty intersection each turn. Horizontal, vertical, and diagonal lines all count, and this freestyle profile accepts a line of five or more stones.
- Be the first player to complete a continuous line containing at least five of your own stones.
Strategy tips
- Create open-ended lines that can grow in two directions, and combine crossing three- and four-stone threats so one defensive reply cannot block every winning point.
- Extending one obvious line without checking the opponent's open four loses immediately, while a line blocked at both ends is much less valuable than it looks.
- Before committing to an attack, scan every row, column, and diagonal for immediate wins and blocks, then prefer a move that creates two next-turn threats.
Complete guide
Rules, scoring, and strategy
Gomoku is a complete browser implementation with its own versioned rules profile. Build an unbroken line of five stones on a fifteen-by-fifteen board while stopping the computer's intersecting threats.
Legal moves and game flow
Place one stone on any empty intersection each turn. Horizontal, vertical, and diagonal lines all count, and this freestyle profile accepts a line of five or more stones.
Winning and terminal positions
Be the first player to complete a continuous line containing at least five of your own stones. Before committing to an attack, scan every row, column, and diagonal for immediate wins and blocks, then prefer a move that creates two next-turn threats.
Practical strategy
Create open-ended lines that can grow in two directions, and combine crossing three- and four-stone threats so one defensive reply cannot block every winning point. Extending one obvious line without checking the opponent's open four loses immediately, while a line blocked at both ends is much less valuable than it looks.
Questions players ask
What is the objective in Gomoku?
Be the first player to complete a continuous line containing at least five of your own stones.
Which moves are legal in Gomoku?
Place one stone on any empty intersection each turn. Horizontal, vertical, and diagonal lines all count, and this freestyle profile accepts a line of five or more stones.
What should I plan first in Gomoku?
Create open-ended lines that can grow in two directions, and combine crossing three- and four-stone threats so one defensive reply cannot block every winning point.
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