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Real Lichess puzzles
Thousands of tactics sampled from the Lichess Open Database (CC0).
Sharpen your chess tactics, one move at a time
Solve thousands of real puzzles from the Lichess database on your Android phone. Find the best move — the rest plays itself.
Free & open-source · Android 7.0+ · no account, fully offline
Built for focused practice
No menus to wade through, no sign-up. Open the app and you are already solving.
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One move to find
Each puzzle announces its goal — "checkmate in 2" or "win material". Spot the best move, then watch the opponent reply.
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Pick your level
Easy, Medium or Hard — jump between rating bands with one tap.
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Streaks & progress
Your solved count and streak are saved on-device, so you pick up where you left off.
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Fully offline
No account, no network. Every puzzle ships inside the app.
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Day & night theme
Follows your system dark mode, or pick Auto/Light/Dark in the app. Night mode dims the board for comfortable play.
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Tap or drag
Move pieces by tapping squares or dragging — a smooth custom Compose board.
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Free & open-source
Apache-2.0 licensed. No ads, no tracking, ever.
How it works
Open a puzzle
A real game position appears with its goal — checkmate in 2, win material, or save the game. One side is to move.
Find the best move
Tap or drag the piece. A wrong move just lets you try again.
Watch it play out
The opponent answers automatically until the puzzle is solved.
Keep your streak
Solve the next one. Your progress is saved on-device.
See it in action
Open source, built from the command line
A multi-module Kotlin project — a pure-JVM chess engine and a Jetpack Compose UI — with 100% test coverage. Read the source and build it yourself.
Kotlin
Jetpack Compose
Android 7.0+
chesslib
100% tested
Apache-2.0