This news item happened in Nanjing, an elder person took a taxi from Shanghai to Nanjing, arriving there he forgot what he was there for, apparently he lost his memory.
The driver took him to police station, while the staff tried to figure out how to deal with the situation, the elderly got a bit agitated, fortunately seeing a chessboard on the table, he quickly calmed down, the requested to play the game !
In the end he played for 20 hours non-stop, except for a few snacks and times to convenience, and the police were defeated (with tiredness !), they had to change players from time to time...
In the end he got his memory back !