Blindfold Chess

During the 18th century, when Philidor played two blindfold games of chess simultaneously, eyewitnesses were asked to swear affidavits attesting to this remarkable feat. Since then, blindfold chess--the art of playing without sight of the board or pieces--has produced some of the greatest feats of human memory, progressing to the extent that the world record is 45 simultaneous blindfold games.