Tampermonkey Chess Script !!top!! Jun 2026

A Tampermonkey chess script is a userscript specifically designed to run on online chess platforms. These scripts range from harmless QoL (Quality of Life) improvements to full-blown automation tools that can play moves on your behalf.

Chess platforms invest heavily in anti-cheat systems (like Chess.com’s "Fair Play" algorithms or Lichess’s "Irwin"). They fight userscripts in several ways:

Choose initially: Chess.com, Lichess, or Chess24.

The local server sends the move (e.g., "e2e4") back to the Tampermonkey script. The script then injects a visual element—such as a red arrow or a highlighted square—onto the board using HTML5 Canvas or SVG manipulation.