Gomoku · Game guide
12 Gomoku attack & defense puzzles
Find a winning move, block four stones, then build a two-way threat.
Rules and controls
Black starts on a 15×15 board. Connect five or more stones horizontally, vertically or diagonally. Both players may make double threes, double fours and overlines. This is freestyle Gomoku, not Renju.
Beginner strategy
Before every move: take an immediate win, then block the opponent's immediate win. An open four has two winning ends; a blocked four has one. A gap inside four stones can also be a one-move threat. Create two independent winning threats when possible, but do not ignore an opponent who can win first.
Solo, shared-device and online play
Gomoku, Go, chess, janggi, Othello and tic-tac-toe offer computer opponents, two-player play on one device, invitation-link online play and random matchmaking. Random matchmaking waits for another person; an immediate match is not guaranteed. Party games differ in player counts, controls and online support.
Saving and deletion
Recent games, regular 2048 and Minesweeper progress and best records stay in this browser without automatic expiry. Daily records retain the last 30 days. Gomoku saves the latest unfinished game for up to 30 days and clears it when finished or restarted. Reversi and tic-tac-toe progress is lost when closing or refreshing. Records do not transfer automatically between devices or domains.