References 376% CONFIDENCEOverall confidence: 76%How well the pin's source and references back up its dates.Weighted average of how firmly 3 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better
The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
- [1]90%gocongress.orggocongress.org· Posted Aug 2, 2017· Starts Aug 5, 2017 ✓· Ends Aug 16, 2017 ✓· 0% of score
Happened as dated, per gocongress.org: "…egistered and 477 Players played in the open The biggest Go celebration in North America is heading…"
- [2]76%U.S. Go Congressen.wikipedia.org· Added Sep 14, 2026· 100% of score
Wikipedia's entry confirms the 33rd U.S. Go Congress[1] was held in San Diego, California, organized by the San Diego Go Club, though the retrieved excerpt does not itself state the specific August 2017 dates the pin claims.
- [3]75%2017 US Go Congress previewusgo.org· Published Jul 1, 2017· 0% of score
WebFetch could not retrieve USGO.org's own preview page (403 Forbidden); its title, "2017 US Go Congress[1] preview," and 1 July 2017 publish date are consistent with previewing the pin's stored 5-17 August 2017 event, though unverified directly.
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