{"slug": "chess5-ai-play-chess-go-xiangqi-gomoku-and-othello-against-llms", "title": "Chess5.ai – Play Chess, Go, Xiangqi, Gomoku, and Othello Against LLMs", "summary": "Chess5.ai, an open-source web app by developer Wangxing-Ye, lets users play chess, Go, Xiangqi, Gomoku, and Othello against large language models including GPT, Claude, Gemini, Grok, Mistral, DeepSeek, Kimi, Qwen, GLM, and MiniMax. The app, available at chess5.ai, features human-vs-model and model-vs-model matches with adjustable difficulty, and counts three illegal model outputs as a loss. The project is designed as an experiment to test each model's board-game strength.", "body_md": "chess5.ai\n\n# Human vs LLM · Five Games\n\nPit yourself against GPT, Claude, Gemini, Grok, Muse Spark, Mistral, DeepSeek, Kimi, Qwen, GLM, or MiniMax across five classic boards.\n\n## How it works\n\n1. Human vs model, or model vs model — with spectating and auto-play built in.\n2. The model chooses each move entirely on its own.\n3. The app parses the move and decides the result by the game rules.\n4. Three illegal model outputs in one match also count as a loss.\n5. If you leave the play page, the match ends with no winner.\n\n## About\n\nThis project is a fun experiment that tests each model's own board-game strength — how smart it really is. Difficulty is adjustable, so it's also nice for beginners and kids learning board games against models. The project is open source — explore the [source code](https://github.com/Wangxing-Ye/chess5).", "url": "https://wpnews.pro/news/chess5-ai-play-chess-go-xiangqi-gomoku-and-othello-against-llms", "canonical_source": "https://chess5.ai/en", "published_at": "2026-09-07 08:16:04+00:00", "updated_at": "2026-09-07 08:57:01.407246+00:00", "lang": "en", "topics": ["artificial-intelligence", "ai-products", "ai-tools"], "entities": ["Chess5.ai", "Wangxing-Ye", "GPT", "Claude", "Gemini", "Grok", "Mistral", "DeepSeek"], "alternates": {"html": "https://wpnews.pro/news/chess5-ai-play-chess-go-xiangqi-gomoku-and-othello-against-llms", "markdown": "https://wpnews.pro/news/chess5-ai-play-chess-go-xiangqi-gomoku-and-othello-against-llms.md", "text": "https://wpnews.pro/news/chess5-ai-play-chess-go-xiangqi-gomoku-and-othello-against-llms.txt", "jsonld": "https://wpnews.pro/news/chess5-ai-play-chess-go-xiangqi-gomoku-and-othello-against-llms.jsonld"}}