Lichess Puzzle Timer, by Eltecson

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

(also available on Android) (also available in the Chrome Web Store)

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

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

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

🆕 Latest Updates

v3.2.10

• Change all instances of "el-tecson" to "eltecson" and "El-Tecson" to "Eltecson"

• 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

• Fix timer's "Failed" count still incrementing even when timer is off

• No ads
• No tracking
• No external accounts
• Minimal permissions

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