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66
Mostly True Budapest

Janos Flesch played chess blindfolded with 52 opponents in 1960, defeating 31 of them.

Both claims about Janos Flesch are supported by historical records but with some controversy. Flesch did engage in a simultaneous blindfold chess exhibition against 52 opponents in 1960. However, reports indicate that the record was disallowed due to him consulting scoresheets, which negates the 'blindfold' element. Nevertheless, this event is documented primarily on Wikipedia, which is a medium-reliability source. These details edge towards substantiating the historical occurrence, albeit with a noted asterisk regarding the legitimacy of the record.

April 12, 2026 Language: en 2 claims analyzed

Individual Claims

65
Mostly True Sports
In 1960, Janos Flesch played chess with 52 opponents, blindfolded.
Historical records, including Wikipedia, confirm Janos Flesch engaged in a simultaneous chess exhibition with 52 opponents in 1960. However, the legitimacy of the 'blindfold' aspect is questionable due to reports of consulting scoresheets. Hence, while the event occurred, the full accuracy of claiming it as blindfolded is partially disputed.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 70
Web Consensus Weight 50
Source Quality Score 50
Source Quality Weight 25
Llm Reasoning Score 70
Llm Reasoning Weight 25
Weighted Total 65
Evidence Summary No direct fact-check found; 2 web sources support the event but question the 'blindfold' aspect.
67
Mostly True Sports
Janos Flesch beat 31 out of 52 opponents while blindfolded.
According to Wikipedia, Janos Flesch achieved 31 victories out of 52 in this exhibition. However, the record was discredited due to not strictly adhering to blindfold rules (i.e., consulting scoresheets). The documented wins further support the fact of playing but question how the record was achieved.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 75
Web Consensus Weight 50
Source Quality Score 60
Source Quality Weight 25
Llm Reasoning Score 70
Llm Reasoning Weight 25
Weighted Total 67
Evidence Summary No direct fact-check found; 2 web sources confirm 31 wins but question the blindfold claim.

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