novelty

1. (chess) An opening move played for the first time ever (in high-level chess).Examples: "Topalov has unveiled some interesting novelties lately, but there was nothing unusual in his opening here. Sasikiran played the Nimzo-Indian, and Topalov replied with probably the most classical continuation."; "It's not often a novelty comes as early as move seven nowadays, but in the latest round of the German Bundesliga, a recently discovered seventh move was employed to win a lovely game."; "The Russian champion still did very well. Nepomniachtchi was only a wildcard, yet played with full force including an interesting novelty in the much analysed Berlin Wall Ruy Lopez."countableuncountable