Chess champion Patrick Wolff will play blindfolded against all comers in the mall at the 2001 Berkshire meeting weekend.

True: Patrick Wolff was at the mall during the 2001 Berkshire meeting weekend (around 27–28 April 2001) and played visitors at chess blindfolded. Mostly true: he did so, but a minor detail differs, such as the day or the exact location. Mostly false: he appeared but did not play blindfolded, or the exhibition took place outside the 2001 meeting weekend. False: dated evidence shows he did not appear in 2001, or the event was cancelled.

Set before the research began.

1. E1 Chairman's Letter Berkshire Hathaway Inc. · 28 February 2002 Own record

   “Last year, Patrick played as many as six games simultaneously ¾ with his blindfold securely in place ¾ and this year will try for seven.”

2. E2 Berkshire Hathaway Annual Meeting 2001 Transcript good-investing.net

   “I'm Warren Buffett, chairman of the board of directors of the company, and I welcome you to this 2001 annual meeting of shareholders.”

E1 is Berkshire's chairman's letter dated February 2002, published under the 2001 annual report; it is an official record that is not independent of the subject. It says that "last year" Patrick Wolff played as many as six games at once with a blindfold on, which supports that the blindfold exhibition happened in 2001. The quoted text does not name the mall or confirm that the games were played during the meeting weekend. E2 confirms the 2001 annual meeting took place but does not mention Wolff. The main claim is supported by the subject's own record, but the location and timing are not separately confirmed.