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gomoku

A free board game — play it in your browser, no install. Gomoku (five in a row) in vanilla JavaScript on a wooden 15x15 canvas board: play the computer (Easy, Medium or Hard; alpha-beta search with iterative deepening in a Web Worker) or a friend. Freestyle or exactly-five rule, undo, move numbers, mouse, touch and keyboard play, English and Turkish.

by @celaldrg · celaldrg/gomoku on GitHubLANG JavaScriptHOSTED ON CELALDRG.GITHUB.IOUPDATED 27 Oct 2026

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Best with a keyboard. Controls: Black moves first

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From the README

Wooden 15x15 board drawn on canvas: star points, coordinates on larger screens, shaded stones, last-move marker, winning-line highlight and optional move numbers. Sharp on high-DPI screens. Play the computer (Easy, Medium or Hard; you choose black or white) or a friend on the same device. Two rules: 5 or more (freestyle) or Exactly 5 (a line of six or more does not win). The AI is an alpha-beta search with iterative deepening and threat-aware move ordering. It runs in a Web Worker, so the page never freezes while it thinks.

Read the full README on GitHub →

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