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Wall, Bill. «Women and Chess». Bill Wall. Consultado el 13 de julio de 2020. «The position got down to each player having only a king and a knight in which a checkmate position is possible but cannot be forced. Her opponent, Sabina-Francesca Foisor, ran out of time under the time control.[...]The arbiter compared the possible checkmate position to a helpmate, in which the defender has to cooperate in order to get to the checkmate. Soko won the appeal and advanced to the next round.»
