Tampermonkey Chess Script May 2026

Let’s assume you want to use a script only for analysis or training, not live cheating. Here’s how.

Example: change square color

document.querySelector('[data-square="e2"]').style.backgroundColor = 'lightblue';

The world of online chess has exploded over the last decade. Platforms like Chess.com, Lichess.org, and Chess24 have turned a 1,500-year-old game into a global digital arena. With this growth comes a new frontier of customization: user scripting.

For the average player, a chess website is a place to click, drag, and drop pieces. For a tech-savvy player, it is a sandbox of JavaScript where rules can be enhanced, visuals altered, and data analyzed in real-time. Enter Tampermonkey—the world’s most popular userscript manager. When paired with a powerful chess script, Tampermonkey transforms your browser into a chess powerhouse.

But what exactly are these scripts? Are they cheating? Can you get banned? And which scripts are actually worth installing?

This article covers everything you need to know about Tampermonkey chess scripts.

Tampermonkey chess scripts are a fascinating display of JavaScript's power and the extensibility of the modern web. They allow developers to hack together custom interfaces and automate tedious tasks. However, when used to gain an unfair advantage, they undermine the spirit of chess—a game defined by human calculation and psychological endurance.

For developers, they are a great project to learn DOM manipulation and client-server communication. For players, however, the best script is still the one running inside your own brain.

🛡️ Level Up Your Online Chess: A Guide to Tampermonkey Scripts

Tampermonkey scripts can transform your online chess experience by adding custom features, UI tweaks, and analysis tools to sites like Chess.com and Lichess. 🚀 Top Features to Look For

Custom Board Themes: Go beyond the default wood or plastic looks.

Coordinate Training: Add overlays to help you memorize the square names faster.

Move Confirmations: Prevent "mouseslips" by requiring a second click.

Enhanced Stats: See deeper win/loss ratios directly on the profile page.

Streamer Mode: Hide usernames and ratings to prevent "sniping." 🛠️ How to Set It Up

Install Tampermonkey: Grab the extension for Chrome, Firefox, or Edge. Find a Script: Search sites like Greasy Fork or GitHub.

Click Install: Tampermonkey will automatically detect the script and ask for permission.

Refresh Your Game: Open your chess site and the new features should be live! ⚠️ A Note on Fair Play

Don't Cheat: Never use scripts that provide engine moves or "best move" hints.

Stay Legal: Chess platforms have strict anti-cheat detection; using assistance scripts will get you permanently banned.

Stick to UI: Stick to scripts that change appearance or manage data, not the gameplay itself.

💡 Pro-Tip: Always check the "Last Updated" date on a script. Chess sites update their code often, which can break older scripts! If you'd like, I can help you: Find a specific script for a feature you want Write a basic script to change a board color

Explain the rules of a specific chess platform regarding extensions What kind of chess platform do you usually play on? tampermonkey chess script

. Using the wrong one is the fastest way to get a permanent ban. Category 1: Quality of Life (Safe-ish)

These scripts focus on the interface and generally don't violate fair play rules as long as they don't help you play. Common Features: External Analysis: Adding buttons to quickly export games to for free analysis. UI Tweaks:

Dark modes, custom piece sets, or moving the clock to a more readable position. Square Labels: Adding coordinates directly onto the board squares. The Verdict:

These are useful for power users. However, even "cosmetic" scripts can occasionally trigger automated anti-cheat systems if they interfere with how the site expects you to interact with the board. Category 2: The "Assistants" (Dangerous) These scripts sit in a "gray area" that is usually just in the eyes of major platforms. Chess Stack Exchange User scripts for chess.com - Greasy Fork

Introduction

The world of online chess has experienced a significant surge in popularity over the years, with numerous websites and platforms offering a range of chess games and tournaments. One of the most popular platforms is Chess.com, which boasts millions of registered users worldwide. However, for some users, the standard gameplay experience may not be enough. This is where the Tampermonkey Chess script comes in – a user-created script that enhances and modifies the online chess experience.

What is Tampermonkey?

Tampermonkey is a popular userscript manager that allows users to run custom scripts on specific websites. It is available as a browser extension for Google Chrome, Mozilla Firefox, and other browsers. Tampermonkey scripts can modify the behavior of a website, add new features, or even remove unwanted elements. In the context of online chess, Tampermonkey scripts can be used to enhance the gameplay experience, provide additional tools, or even automate certain tasks.

The Tampermonkey Chess Script

The Tampermonkey Chess script is a custom script designed to work with Chess.com. The script is written in JavaScript and is typically installed using the Tampermonkey extension. Once installed, the script can modify various aspects of the Chess.com website, such as:

Benefits of the Tampermonkey Chess Script

The Tampermonkey Chess script offers several benefits to users, including:

Concerns and Limitations

While the Tampermonkey Chess script can offer several benefits, there are also concerns and limitations to consider:

Conclusion

The Tampermonkey Chess script is a powerful tool that can enhance and modify the online chess experience on Chess.com. While it offers several benefits, including improved analysis tools and customization options, it also raises concerns regarding security, terms of service, and script quality. As with any user-created script, it is essential to approach with caution and carefully evaluate the risks and benefits before installation. Ultimately, the Tampermonkey Chess script can be a valuable resource for users looking to take their online chess experience to the next level.

Tampermonkey is a browser extension that lets you run "userscripts" to modify how websites like Chess.com and Lichess.org look and behave. Using scripts for things like UI themes, board coordinates, or analysis tools is generally safe, but using them for "assistance" during a live game will get you permanently banned.  1. Setup the Environment 

Before you can run any chess scripts, you need the "manager." 

Install Tampermonkey: Download it from the Chrome Web Store or Firefox Add-ons.

Enable Developer Mode: In Chrome-based browsers, go to chrome://extensions and toggle Developer Mode (top right) to "On." This is often required for modern scripts to execute.  2. Finding Chess Scripts 

Most users find scripts on community repositories rather than writing them from scratch. 

Greasy Fork: The primary hub for userscripts. You can find everything from custom piece sets to advanced UI tweaks. Let’s assume you want to use a script

GitHub: Developers often host scripts here. Popular projects include the Advanced Chess Assistance System (A.C.A.S) and UI-only mods like Chess Helper.  3. How to Install a Script  Once you find a script you like: 

Click "Install" on the Greasy Fork page. Tampermonkey will open a new tab showing the code.

Confirm Installation: Click the Install button again within the Tampermonkey tab.

Verify: Click the Tampermonkey icon in your browser toolbar to ensure the script is listed and toggled to Enabled.

Refresh: You must refresh your chess site tab for the script to take effect.  4. Common Script Types  Type  Risk Level UI Themes Changes board colors or piece styles. Safe Game Review Adds "Brilliant" or "Best Move" icons to your past games. Safe Opening Books Loads specific lines into your analysis board. Safe Cheats/Bots Finds the "best move" during live play. BANNABLE ⚠️ Important Warning: Fair Play 

Chess sites use advanced algorithms to detect moves that match engine recommendations too closely.  How to use Tampermonkey (Simple Tutorial 2024)

Tampermonkey chess scripts are powerful tools that allow players to customize and enhance their experience on popular platforms like Chess.com and Lichess. By using the Tampermonkey browser extension, players can run custom JavaScript "userscripts" that modify the functionality and appearance of these websites.

While some scripts are designed for purely aesthetic or utility purposes, others fall into a gray area or are strictly prohibited. Below is a comprehensive look at how these scripts work, what they offer, and the risks involved. What is a Tampermonkey Chess Script?

Tampermonkey is a popular userscript manager available for browsers like Chrome, Firefox, and Safari. A "chess script" is a small program that lives within this manager and executes only when you visit a specific chess site.

These scripts can "see" what is happening on your screen—such as the position of the pieces or the time on the clock—and then interact with the page to change its layout, add new buttons, or even suggest moves. Common Types of Chess Scripts

Userscripts for chess generally fall into three main categories: 1. UI & Visual Customization

These are typically allowed by most platforms as they don't provide a competitive advantage.

Custom Board & Pieces: Change the look of your board or pieces to styles not natively offered by the site.

Move Labels: Add coordinate labels directly onto the squares for better visualization.

Streamer Overlays: Hide your rating or sensitive information while broadcasting to avoid "stream sniping." 2. Workflow & Productivity Tools

These scripts streamline how you study or interact with the site without playing the game for you.

Analysis Integration: Add buttons to quickly export a game from Chess.com to the Lichess Analysis Board.

PGN Utilities: Re-enable right-clicking or text selection on sites that restrict it, making it easier to copy move lists for study.

Advanced Keybinds: Create custom shortcuts to resign, draw, or navigate puzzles faster. 3. Assistance & "Bots" (Strictly Prohibited)

These scripts are highly controversial and will likely result in a permanent ban.

Several scripts have gained notoriety in the chess community. Note that many are continuously updated or removed due to anti-cheat measures.

The Tampermonkey chess script ecosystem is a double-edged sword. The world of online chess has exploded over the last decade

On one edge, you have beautiful, ethical scripts that make online chess more accessible: better color contrast for visually impaired players, move timers for post-game analysis, and custom piece skins.

On the other edge, you have blatant cheat scripts that destroy the spirit of the game. Using an engine via a script is no different than hiding a phone in your lap during a tournament. You gain fake ELO, but you lose the joy of improvement.

My recommendation:

Finally, remember that chess is a game of intellect, pattern recognition, and emotional fortitude. A script can draw arrows, but it cannot feel the thrill of a discovered check or the agony of a blunder. Those feelings are the real reward.

Keep scripting ethically, and may your forks be mighty.

Have a favorite Tampermonkey chess script? Share it in the comments below (GreasyFork links only, please).

Before you start, ensure you have Tampermonkey installed in your browser. Then, you can create a new script by clicking on the Tampermonkey icon in your browser toolbar, selecting "Create a new script," and then pasting the following code into the editor:

// ==UserScript==
// @name         Chess Script
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Try to take over the world!
// @author       Your Name
// @match        https://www.chess.com/*
// @grant        none
// ==/UserScript==
(function() 
    'use strict';
    document.body.appendChild(document.createElement('div')).innerHTML = 'Tampermonkey script injected!';
)();

This script does the following:

More Complex Scripts:

For more complex interactions, like analyzing chess positions or suggesting moves, you would likely:

Keep in mind that interacting with websites in such a way can be against the terms of service of some platforms. Always ensure you're not violating any rules.

Creating advanced scripts requires a good understanding of both JavaScript and the specific website's structure and APIs.

Tampermonkey scripts for chess are broadly divided into utility scripts (which improve the user interface) and assistance/bot scripts (which use engines to suggest moves) Popular Utility Scripts

These scripts are generally safer to use as they only change visual elements or add convenient links: A.C.A.S (Advanced Chess Assistance System)

: A highly-rated script that provides board analysis and move suggestions using a GUI. Chess Plus+

: Adds features like an "Auto Queue" to join new games faster and a "Lichess Analysis" button to quickly export Chess.com games to Lichess. Shadow Chess Pieces

: A cosmetic script that changes the visual style of the chess pieces with a "shadow" effect. Lichess Analysis for Chessgames.com

: Adds a one-click button to analyze historical games from Chessgames.com directly on Lichess. Assistance & "Bot" Scripts

Using scripts that calculate or play moves for you is considered cheating on platforms like Chess.com and Lichess. These accounts are usually banned quickly. US Chess Sales

Here’s a structured guide for creating a Tampermonkey chess script — from understanding what it can do, to writing your first script, and staying within fair play guidelines.