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Justaminute: It shouldn't be too difficult to construct a game where black gives mate from a distance on move 20.
White moves axb3, bxc3, Na3-c4, Ba3, Qb1. Black moves axb6, Ra6-a5-a4xa3xa1. Then both make random moves on the kingside, and on move 20 Black plays Rxb1 with possible mate.
(nascondi) Se vuoi giocare contro un avversario del tuo livello, puoi definire un BKR minimo ed uno massimo per ogni nuova partita che intendi creare. In questo modo nessun giocatore che non sia all'interno di questa fascia di rating potrà vedere o accettare il tuo invito. (Katechka) (mostra tutti i suggerimenti)