Lichess Puzzle Timer By E

🚀 Lichess Puzzle Timer – Time-Constrained Training for Lichess Puzzles

(also available in Firefox and Firefox for Android)

Lichess Puzzle Timer is a lightweight Chrome extension designed to help chess players train faster, smarter, and more consistently on Lichess puzzles.

Built directly into the Lichess puzzle page, this extension adds a real-time puzzle timer, automated puzzle flow, and performance analytics—no external tools, no accounts, no clutter.

Perfect for players focused on speed chess, tactics training, blitz improvement, and puzzle-solving rhythm.

⏱️ Key Features
- Real-Time Puzzle Timer
Track how long you take on every puzzle with a clean, floating timer popup that you can drag and resize.

- 2 Modes for Timer:
- Per-Puzzle Mode: Resets the timer after each puzzle.
- Cumulative Mode: a set amount of time. With the additional feature of automatically stopping when a puzzle is solved, and automatically resuming when a new puzzle is loaded.

- Any motif, any difficulty, adjustable time
Will work in any motif, any difficulty (Lichess has built-in selection for difficulty), adjustable time. Basically as long as it has a puzzle board, it will work.

- Automatic Puzzle Detection & Skipping
Instantly detects puzzle completion and out-of-time scenario and smoothly advances to the next puzzle.

- Settings Page
Easily customize everything through the chrome extension's settings page (accessible through clicking the Timer Popup's Settings Button, Menu Popup's wide logo, and the extension's default_popup's wide logo).

- Timer Presets for different Time Controls:
- Very Fast – 10s time control / 3s cooldown (Ideal for Bullet)
- Fast – 20s / 3s (Ideal for Blitz)
- Normal – 60s / 3s (Ideal for Blitz and Rapid)
- Slow – 2m / 5s (ideal for Rapid)
- Very Slow – 5m / 15s (Ideal for Rapid and Classical)

- Analytics Popup
Check your total puzzles, accuracy, total solved and unsolved puzzles in real-time.

- Customizable Visuals & Sounds
- Toggle timer visuals
- Adjustable volume
- Optional sound effects
- Light Mode preset available

- Smart, Safe Integration
- Uses safe DOM interaction
- Only runs on Lichess puzzle pages
- No tracking, no accounts, no unnecessary permissions

🧠 Designed for Serious Training
Lichess Puzzle Timer helps you:
- Improve tactical speed
- Improve time discipline
- Build puzzle-solving discipline
- Develop a consistent training rhythm
- Practice under realistic time pressure
Ideal for blitz players, bullet grinders, and tactical trainers who want a focused puzzle workflow.

🆕 Latest Updates
v3.2.10
- Change all instances of "el-tecson" to "eltecson" and "El-Tecson" to "Eltecson"

v3.2.9
- Reset isFailedPuzzle ref on timer cancel
- Turn off all intervals and animation loops on timer cancel
- Make review link lead to firefox addon when using firefox browser

v3.2.8
- Fix timer's "Failed" count incrementing even while it's off

🔒 Privacy-Friendly & Lightweight
- No ads
- No tracking
- No external accounts
- Minimal permissions

📦 Open Source
Source code available on GitHub:
👉 https://github.com/eltecson/lichess-puzzle-timer/