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Some trivia and time for guessing:
In chess, there is a special (show) event: simultaneous blindfold chess. One player plays alone and without seeing the boards on xxx boards against xxx opponents simultaneously.
I am asking you to guess the world record in blindfold chess (=on how many boards or against how many opponents did the world record holder play at the same time). Bonus point if you can guess the duration of this performance, too.
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