3x3 Speedcubing: The Ultimate Limits Forecast
History · Methods · Hardware · Math · Biomech · Top Cubers · Training · Statistics — toward a single & average forecast.
Top Line
The 3x3 single WR was set at 2.76 s by 9-year-old Teodor Zajder (Poland) on 2026-02-08, the first sub-3 ever; the Ao5 WR was pushed to 3.71 s two months later by 8-year-old Xuanyi Geng (China) using full ZB. Combining curve fits (Exp+floor / Gompertz / power), physical floor (STM × TPS + R), and extreme-value theory (Gumbel/GEV reverse-Weibull):
WR Single Forecast
- 20302.30 s
- 20401.90 s
- 20501.70 s
WR Ao5 Forecast
- 20303.00 s
- 20402.40 s
- 20502.15 s
Physical/Math Floors
- 100-yr method-reachable~1.50 s
- Math wall~0.99 s
- Ao5 asymptote~1.90 s
All forecasts include 80% confidence band; full methodology at the end.