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Continue to Chat藤井聡太竜王、チェス界進出へ!「チェス・プロブレム」の大会参加に意欲「自信がついたタイミングで」 https://blog.40ch.net/2021/12/26/souta-fujii-ryuo-goes-into-the-chess-world-willingness-to-participate-in-the-chess-problem-tournament-when-you-feel-confident/