helps train play better chess. helps play a bit more blind

[sl5net]

https://lichess.org/forum/lichess-feedback/semi-blindfold-chesssuggestion
https://en.wikipedia.org/wiki/Blindfold_chess

javascript:(function(){function replaceClasses(elements,newClass) { elements.forEach((element) => { if (element) { element.classList.remove('black', 'white'); element.classList.add(newClass); } }); } const whiteBishops = document.querySelectorAll('.white.bishop'); const blackBishops = document.querySelectorAll('.black.bishop'); replaceClasses(whiteBishops,'unread'); replaceClasses(blackBishops,'copyable'); const whiteRooks = document.querySelectorAll('.white.rook'); const blackRooks = document.querySelectorAll('.black.rook'); replaceClasses(whiteRooks,'unread'); replaceClasses(blackRooks,'copyable');})();

or

javascript:(function(){const pieces = document.querySelectorAll('.black.rook, .black.bishop, .white.rook, .white.bishop'); pieces.forEach((piece) => { piece.style.opacity = 0.2; });})();