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Tim Ferriss Speak With Joshua Waitzkin: A Chess Prodigy & A Jiu-Jitsu Black Belt
The basis for the book & movie "Searching for Bobby Fischer"
last checked Jul 10, 2026 · Unknown
CohortClass of 2015What it is
The basis for the book & movie "Searching for Bobby Fischer"
HTTP liveness
8 probes since Jun 16Jun 16Jul 10
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jun 16, 2026First probe — unverifiedUnknown
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Pulse Indexobserved activity
8 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2015weekly
12,940 products launched in 2015 · 100% still active
12,899 active41 sunset
Still active
100%
Median lifespan
4.9y