Learn
A hundred chess lessons on the rules, tactics, openings, endgames, strategy and attacking the king, from setting up the board to the Greek gift and the Lucena bridge. Each one counts toward your level, your rank and your daily streak.
Learn chess one idea at a time.
KarpaChess is a chess app that teaches on the board. A hundred lessons show you an idea, let you play it, then ask you to prove it on a new position. Train on rated puzzles, play Stockfish 19, and study the masters, in twelve languages.
Coming soon to
Google Play
- Free
- No account
- No ads
- Works offline
- Lessons
- 100
- Puzzles
- 441
- Master games
- 240
- Languages
- 12
- Piece sets
- 10
Every lesson ends with proof.
Each of the hundred lessons follows the same three beats, so an idea goes from something you have seen to something you can do.
-
See it
The idea, on the board
Arrows and moves played out for you, with a short explanation. Each beat teaches one thing.
-
Play it
Now you make the moves
You play the idea yourself. Stuck? The hint is a sentence the lesson’s author wrote for exactly that position.
-
Own it
Prove it somewhere new
A puzzle on a position you have not seen shows the pattern is yours. It goes into your Pattern Book, and Sharpen brings it back before you forget it.
Eight arts:
- Foundations
- The Story of Chess
- The Blade
- The First Moves
- The Finish
- The Plan
- The Hunt
- The Chess World
Six ways to get better.
Puzzles
A rated puzzle trainer: 240 chess puzzles in twenty packs, from 600 to 2000. Your first try moves your rating. After that, replay any puzzle to beat your best.
Play
Play chess against Stockfish 19 at four strengths, from beginner to full strength, timed with a real clock or untimed. A game you leave is still there when you come back.
Review
Every move of a finished game graded, with the turning point explained:
- Best
- Good
- Inaccuracy
- Mistake
- Blunder
Studio
240 short master games in 24 collections, plus your own PGN files, with their comments and variations kept. Brilliant moves are flagged, and you can draw on the board.
A hint when you ask
One hint button, answered on your device. It looks at material, king safety, pawn structure, development and loose pieces, and says what matters.
Made for the phone, and the tablet.
Tap a screen to see it larger.
A board you want to look at for hours.
Ten themes, five boards and ten piece sets, plus three typefaces and three sound packs. Every piece set, and the icon, is original: drawn in code and given to the public domain.
Ten themes
- Midnight Grove
- Ember Study
- Slate Focus
- Indigo Hour
- Bronze Age
- Jade Terrace
- Plum Velvet
- Ivory Hall
- Linen Morning
- Harbor Light
Five boards
- Tournament
- Walnut
- Sheesham
- Slate
- Sage
Ten piece sets
Classic
Wood
Marble
Diagram
Modern
Deco
Facet
Silhouette
Soft
Bold
Twelve languages, all the way down.
The app, every lesson and every puzzle, translated by hand. Arabic reads right to left.
- English
- Français
- Español
- العربية
- 中文
- Русский
- Bahasa Indonesia
- 日本語
- हिन्दी
- Türkçe
- Italiano
- Português
Nothing you do leaves your device.
KarpaChess collects no personal data. There is no server for it to send anything to.
No account
Nothing to sign up for and nothing to log in to.
No internet
The app never connects. Stockfish thinks on your device.
No tracking
No ads, no analytics, no crash reporting.
Yours alone
Progress, settings and games stay on your device. Deleting the app removes them all.
Free software, in the open.
KarpaChess is licensed under the GNU GPL, version 3 or later. Its complete source is public: the app, the lessons and puzzles, and the bridge to its engine. It is built on Stockfish and on lichess’s chessground and dartchess.
Questions or feedback?
Your next move.
KarpaChess is free, for iPhone, iPad and Android phones and tablets.
Coming soon to
Google Play