CHESS brings you Stockfish, the strongest open-source chess engine, right on your phone.
Whether you have just learned the rules or you want a real fight, there is an opponent at your level.
■ Nine difficulty tiers
Spin the wheel and pick your opponent, from a gentle beginner to an engine at full strength.
· Under 500 — Novice
· 800 / 1100 / 1400 — Beginner, Intermediate, Advanced
· 1700 / 2100 — Expert, Master
· 2500 / 2700 — Grandmaster, Super Grandmaster
· 3000+ — AI Master
■ 300 tactics puzzles
Train your eye for checkmate. The deeper the tier, the further ahead you must calculate.
· Beginner — 100 puzzles, mate in 1
· Intermediate — 100 puzzles, mate in 2
· Advanced — 100 puzzles, mate in 3
Stuck? The hint shows which piece to move without playing it for you.
When a position has more than one solution, every move that still forces mate is accepted.
■ Three ways to play
· You vs Computer — choose your colour and the engine's strength
· Computer vs Computer — watch two engines of different strength play it out
· Two Players — share one device. The board turns 180° between moves so
the player sitting opposite always sees it the right way up
■ Review every game
Games are saved automatically (last 60). Step through them move by move, and tap
"Suggest" to compare what you played against the engine's best — Best, Good,
Inaccuracy, Mistake or Blunder. During a game the hint marks the origin square
of the best move without making it for you.
■ Track your progress
Every game updates your Elo rating. Start at 600 and climb through nine ranks.
■ Learn chess
Twelve lessons, from how each piece moves to castling, en passant and promotion.
Not just text and diagrams — each lesson plays an animated demo of the real moves.
■ Make it yours
· 7 piece sets — Classic, Letters, Minimal, Army, Medieval, Space, Retro
· 8 piece materials — Gold, Diamond, Wood, Marble, Crystal, Rose Gold, Emerald
· 10 board themes
· 8 languages — 中文, English, Français, Deutsch, हिन्दी, Italiano, 日本語, 한국어
■ Complete rules
Castling, en passant, promotion, checkmate and stalemate, plus the 50- and
75-move rules, threefold and fivefold repetition, and insufficient material.
■ Works offline
Every move, puzzle and engine calculation runs on your device. No internet needed,
no account, no sign-in.
CHESS — Play, Learn, Review