Play against bots
Choose bots with different levels and practise whenever you want, without waiting for an opponent.
Complete product guide
One platform to play, teach and learn chess.
MainChess brings online games, live classrooms, PGN analysis, artificial intelligence, events and communication into one focused experience.
Use the application ribbon to move between playing, learning, analysis, news and your account without losing context.
01 · Play
People, bots and observable games
The Room shows active games and connected users. Challenge a bot or another player, or open a game to observe its board and chat.
Interact during the game
Use the board, clocks, move list, material evaluation and chat together while you play or observe.
02 · Teaching
Create a digital classroom
- Start from a game, position or PGN.
- Give the classroom a clear name.
- Choose its club or broadcast scope.
- Share the board, media and resources with students.
- Use permissions to control analysis, chat and submitted lines.
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03 · Analysis
Turn a game into a study
Open a saved or imported game and use the contextual tools to study it:
- Engine analysis and candidate variations.
- Opening book and endgame tablebases when available.
- Evaluation graph and critical moments.
- Comments, arrows, colours and shared resources.
- Save a clean copy or download a PGN.
04 · Artificial intelligence
Lucena understands the position
Lucena is MainChess's contextual AI assistant. It can explain the position you are viewing instead of giving disconnected generic advice.
Ask, speak and listen
Ask about plans, threats, mistakes and alternatives by text or voice, then listen to the explanation.
Explain important moments
Generate a comment for the current position or review the critical moments of an entire game with generative AI.
Combine tools: play a bot, pause at a difficult position, ask Lucena for guidance, then check the engine and continue practising.
05 · Learning
Follow your own learning route
Use Fundamentals, Beginner lessons, Exercises, Puzzles, Practice and Lessons to move from an explanation to a real position and then practise it.
- Study openings and typical positions.
- Solve tactical puzzles with hints and solutions.
- Practise openings, middlegames and endgames against the computer.
- Keep lessons and classroom material in one place.
06 · Events and news
Stay connected to chess
Live broadcasts
Follow tournaments with boards, clocks, PGN, chat and the main game.
News
Read a curated selection of national and international chess news from the application.
07 · Quick start
Four useful first steps
Play a bot
Open Room, choose a bot, select a level and start the game.
Ask Lucena
Open the assistant from the board and ask about the current position.
Analyze a game
Open Archive, choose a PGN and use the engine, graph and AI comments.
Create a classroom
Start from a board or game, invite students and explain the position together.