User:SOTO/Forum Archive/Spelling debates/@comment-24894325-20151219214614/@comment-24894325-20151220125601
From Tardis Wiki, the free Doctor Who reference
Bad news from AdricLovesNyssa: it is "checkers" in the script of The Silver Turk. So now we have two opposing spelling from in-universe sources: checkers in AUDIO: The Silver Turk and chequers in PROSE: Revolution Man.