chess.ceo

Whether you're a beginner learning openings or a tournament player preparing for your next opponent, chess.ceo gives you professional analysis tools right on your phone.

Stockfish Engine Analysis

Analyze any position with the world's strongest engine, running

locally on your device — no internet required.

11M+ Game Database

Explore over 11 million master-level games with real-time opening

statistics. For any position, instantly see which moves were played,

how often they led to wins, and at what rating level. Filter by rating

range and time control to find data relevant to your level. Endgame

positions are covered by seven-piece Syzygy tablebases showing perfect

play with distance-to-mate.

Opponent Preparation

Search any player by name, country, or FIDE title. View their game

history, ratings, and most-played openings. Study their repertoire and

identify weaknesses before your next tournament game. Link players

across FIDE and Chess.com profiles.

Live Tournament Broadcasts

Follow ongoing tournaments with live game boards, per-board evaluation

bars, and live standings. Jump straight into any player's games while

a round is in progress.

Full Game Analysis

Import games via PGN — paste from clipboard or load from file. The

engine evaluates every move and shows where mistakes were made. Build

a complete variation tree with main lines and sidelines, annotate key

moments, and save your analysis for later.

PGN Files

Organize your analyzed games into PGN files with folders. Files sync

across devices when you sign in. Import PGN files with hundreds of

games at once or export selected files to share with coaches and

training partners.

Additional Features

• Chess960 (Fischer Random) with one tap

• Chess clock with customizable time controls

• Position editor for setting up any position

• Search games by position across your files

• Landscape and tablet support

• Available in seven languages: English, German, Spanish, French,

Russian, Chinese, and Arabic

Completely Free

chess.ceo is completely free — no ads, no subscriptions, no paywalls.

Just serious chess tools, built for players who want to focus on the

game.

Download now and take your chess preparation to the next level.