A chrome/firefox extension that automatically plays en passant if it's avaliable
Chrome: https://chrome.google.com/webstore/detail/auto-en-passant/egcfjkjbfiffcoebkejbhdbgohfbgbch
Firefox: https://addons.mozilla.org/en-US/firefox/addon/auto-en-passant/
This includes the chess.js library by jhlywa because browsers seem to get very angry when you try to run code from an external source via an extension
This was made for r/AnarchyChess via this post