Now with Claude 3.7 Sonnet

The chess platform for the AI era

Play against Claude, analyze your games with natural language explanations, and compete in real-time multiplayer matches.

npm install chess-ai
BlitzRapidClassicalBulletCorrespondence960Crazyhouse3-CheckBlitzRapidClassicalBulletCorrespondence960Crazyhouse3-CheckBlitzRapidClassicalBulletCorrespondence960Crazyhouse3-Check
0+
Active Players
1.2M
Games Analyzed
99.9%
Uptime
0+
Countries

Everything you need to improve

From AI-powered training to competitive multiplayer, all the tools to master chess.

Play with Claude AI

Challenge Claude or any LLM at your skill level. Get personalized coaching, adaptive difficulty, and learn from every move.

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AI Game Analysis

Upload your games and receive deep analysis. Understand mistakes, discover missed opportunities, and get actionable insights.

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Multiplayer Arena

Challenge friends or match globally. Real-time games with live chat, custom time controls, and rated matches.

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Spectate & Learn

Watch live games from top players. Interactive spectating with move predictions and community commentary.

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Claude Integration

Your personal chess coach, powered by AI

Unlike traditional engines that just show the best move, Claude explains the reasoning. Understand strategic concepts, tactical patterns, and positional ideas that matter.

Real-time move suggestions with explanations
Identify blunders and learn alternatives
Track improvement with progress reports
Study famous games with AI walkthroughs
claude-analysis.ts
$ chess-ai analyze --game=latest

Play against anyone, anywhere

From casual blitz to classical tournaments, find your perfect match.

Blitz

3+2
1,240 playing

Rapid

10+0
892 playing

Classical

30+20
456 playing
♕
Player_1vsOpponent_1
3+2234
LIVE
♘
Player_2vsOpponent_2
10+0468
LIVE
♕
Player_3vsOpponent_3
5+3702
LIVE
♘
Player_4vsOpponent_4
15+10936
LIVE
Live Spectating

Watch & learn from top players

Spectate live games with interactive features. See predicted moves, join the conversation, and learn from every decision. Follow your favorite players and never miss a brilliant combination.

Global Tournaments

Follow major events live

Live Chat

Discuss with community

Ready to make your first move?

Join thousands of players improving their game with AI-powered training and competitive play.

No credit card required. Free tier includes unlimited games against AI.