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Lean Grimoire
Terry Tao builds interactive logic game using AI tools.
In brief
Terry Tao builds interactive logic game using AI tools. Terry Tao released an AI-powered logic game called Lean Grimoire for teaching mathematical proofs. Originally reported by Wordpress.
Lean Grimoire project
Terry Tao started a project to modernize a 2018 Javascript interactive logic textbook called QED.
Project background
Tao used coding agents to rebuild the game with new features including in-progress proof displays.
Fantasy mode added
The game now includes a fantasy mode where mathematical statements become potions and expressions become scrolls.
Screenshot example
A typical screenshot shows nearly completed proof of an assertion in the game.
Playtesting request
Tao seeks playtesting to improve the app as a teaching tool for logical proofs.
Original textbook
The textbook QED taught propositional and first-order logic through a crafting game approach.
Project timeline
Tao paused the project during hectic events but resumed work in November 2026.
Mathematical focus
The game helps users apply logic rules to reach conclusions from given hypotheses.
Current status
The Lean Grimoire project is available for playtesting to enhance its educational value.
User feedback
Some users found the intro tactics confusing without prior exposure to theorem provers.
Suggested improvements
Users recommend stronger visualizations to make the game more engaging for beginners.
Tao's background
Tao is a mathematician known for his work in mathematical logic and AI.
Project goals
The project aims to create a more effective tool for teaching logical proofs using AI.
Future development
Tao plans to add more features based on playtesting feedback.
Educational impact
The game could help students understand complex logic concepts through interactive learning.
The key point
Terry Tao released an AI-powered logic game called Lean Grimoire for teaching mathematical proofs.





