Sweet checkmate, deep analysis

15 unique AI characters · 470,000+ tactics puzzles · Precision analysis of every move

Features

Play vs AI

Challenge 15 AI characters with distinct personalities — from beginner (400) to grandmaster (2600), with aggressive, positional, and other playing styles to choose from.

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Play Online

Get matched with opponents at your level in real time — jump straight into a game whenever you connect.

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Puzzles

Try it free

Try 3 puzzles today with no account needed — 470,000+ tactics puzzles served at the right difficulty for you.

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Analysis

AI analyzes every move — spotting blunders and mistakes, highlighting best moves, and giving you an accuracy score.

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Learn

Interactive lessons, openings, and Coordinate Trainer to build fundamentals and sharpen your practical play.

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Tournaments

Join or host Arena, Swiss, or round-robin tournaments.

A Growth Loop That Never Stops — Powered by AI

Review → Train → Play, all in one place — find your weaknesses, fix them, and come back stronger.

AI Coach Review

More than engine scores. Your AI Coach explains in plain language why a move fell short, and breaks down accuracy from both White and Black's perspective.

✓Stockfish precision analysis
✓AI Coach natural-language commentary
✓Accuracy by color (White & Black)

Play vs AI or Real Opponents

From 15 AI characters (including adaptive ones that adjust to your level) to live games and tournaments — put what you've learned to the test right away.

✓15 AI characters · 4 playing styles
✓Real-time skill-based matchmaking
✓Arena & Swiss tournament hosting

Targeted Learning to Fix Weaknesses

Solve 470,000+ puzzles and ChessNest automatically diagnoses weak tactical patterns — then fill the gaps with interactive lessons and Coordinate Trainer.

✓Puzzles that diagnose weaknesses
✓6-level interactive lessons
✓Glicko-2 adaptive difficulty

An AI Opponent for Every Level

15 AI characters in total — 12 fixed characters ranging from Elo 400 to 2600, plus 3 adaptive types (Mirror, Sensei, and Rival) that adjust to your skill.

🎯 All-Round⚔️ Aggressive📚 Classical🏛️ Positional