Caro Board (Gomoku)

Play:

Full screen 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.

Play next:

Capture Go Simplified Go on a 9x9 board - capture any opposing stone group first to win.

Dominoes Tap to select a tile, tap the highlighted end to place it, and try to out-block an AI that actually plans ahead.

Drop Four Classic Connect Four against a genuine AI, a friend on the same device, or watch two AIs face off.

Wall Go Move a stone, build a wall, and carve the 7x7 board into territory before your opponent walls you in.

Tags:

board · strategy · gomoku