Enhance learning with AI-driven flashcards, tests, and games.
72M visits/mo+70.8%#1 Lifestyle & Education
FreeStarting price
27Popularity
About 99Chess
99Chess provides a free AI-powered chess coach that analyzes games, offers personalized feedback, and generates training programs. Users can import games from Chess.com or Lichess or play directly on the platform. The system builds a weekly training program around the user’s most costly mistakes, including daily reviews, puzzles derived from personal errors, and a checkpoint game to close each theme. The AI coach explains moves in plain language, highlighting threats, development, and strategic plans rather than just engine evaluations. It includes features like move accuracy analysis, blunder detection, mistake navigation, and a sandbox to play from key positions. The engine adapts to the user’s skill level, offering sparring at an appropriate strength. A spaced-repetition system ensures puzzles return at optimal intervals for retention. The platform also plans to offer rated blitz games and live game viewing with a coin-based cheer system.
Key features
- AI-powered game analysis with move explanations
- Personalized weekly training programs
- Puzzles generated from user's mistakes
- Spaced repetition for puzzle review
- Adjustable engine strength for sparring
- Move accuracy and blunder detection
- Eval graph and mistake navigation
- Game import from Chess.com and Lichess
Use cases
- Improving chess skills through personalized feedback
- Analyzing and learning from personal game mistakes
- Building structured training programs around weaknesses
Pros
- Free to use with no payment required
- Personalized training programs built from user's own games
- Explains moves in plain language rather than just engine lines
- Spaced repetition for puzzles based on individual mistakes
- Adjustable engine strength to match user's skill level
Cons
- No mobile app; requires browser access
- Training features require a free account
- Arena and live games listed as 'coming soon'
Frequently asked questions about 99Chess
What does 99Chess do?
99Chess is a free AI-powered chess coach that analyzes games, provides personalized feedback, and generates training programs. It explains moves in plain language, highlights strategic plans, and builds a weekly training program based on the user’s most costly mistakes.
Who is 99Chess suitable for?
99Chess is designed for chess players of all skill levels, from beginners to club-level players. The AI engine adapts to the user’s strength, offering sparring at an appropriate level and personalized training programs.
Is 99Chess really free?
Yes, playing games, receiving hints, reviewing games, and solving puzzles are all free. No payment or trial timer is required. A free account is needed only to access the training program, game import, and AI coach features.
How do I get started with 99Chess?
Users can start by playing directly on the platform or importing games from Chess.com or Lichess. The AI coach then builds a personalized training program based on the user’s games, including daily reviews, puzzles, and a checkpoint game.
Does 99Chess work on mobile devices?
Yes, 99Chess operates entirely in the browser and does not require any installation, making it accessible on both desktop and mobile devices.
What makes 99Chess different from other chess platforms?
Unlike traditional chess sites focused on gameplay, 99Chess emphasizes learning and improvement. It provides plain-language explanations of moves, hints that encourage independent thinking, and puzzles derived from the user’s own mistakes with spaced-repetition scheduling.
