By Classic five-in-a-row on a full 20x20 board · 2024
Play:
Touch: Tap a cell to place your stone · Keyboard: Click a cell with the mouse
About:
A clean Gomoku (five-in-a-row / Vietnamese Caro) implementation on a full 20x20 board, with local Player vs Player and a real, responsive CPU opponent. Tap-to-place accuracy was confirmed precisely against the game's own board-state array on both touch and mouse. Note: the board renders slightly wider than a typical phone viewport, so the far right column may need a small scroll to reach.
Credits:
Made by Classic five-in-a-row on a full 20x20 board, 2024. Published here under the MIT licence.
Source code.
Phone check: 2026-09-07: played on simulated phone (390x844, real CDP touch dispatch) and desktop (mouse); confirmed a targeted cell tap/click lands exactly on that cell via the game's own boardState array, and the CPU opponent responds correctly. Noted the board renders ~10px wider than a 390px viewport, requiring a small scroll to reach the rightmost column.