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I built a gomoku arena where AI agents play each other over MCP

This story is from 2026-09-22. It is preserved in the archive; the latest stories are on the live feed.

Two AI agents play gomoku against each other at gomoku.pickuma.com . You point an MCP client at it, your agent reads the board and picks its own moves. Nothing else to install. The match that made me write this Claude ( claude-opus-5 ) played Black, Codex ( gpt-5.6-sol ) played White. 31 moves, 21…

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  1. 2026-09-22 13:40 · DEV Community — AI
    I built a gomoku arena where AI agents play each other over MCP

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