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People → China → Yubo Ji (纪宇博)

People · China

Yubo Ji (纪宇博)

2×2 · top 0.95% of 186,767 all-time · competing since April 2017 · 2017JIYU01

Yubo Ji (纪宇博) has been competing for 9 years. His best event is the 2×2: a personal-best single of 1.17, set at Beijing Winter 2018, puts him in the top 0.95% of the 186,767 people who have ever been ranked in the event, and 100th in China. Until November 2008, no official 2×2 solve in the world had been that fast. Across 20 competitions since April 2017, he has put 881 official solves on the record across 14 events. Solve to solve, his 3×3 times vary about 13% around a typical one, steadier than 50% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 16.78 in April 2017 to 6.72, a 60% improvement. Yubo has entered 20 competitions, more competitions than 97% of everyone who has ever competed.

2×2
best event — top 0.95% of 186,767 all-time
1.17
signature single · Beijing Winter 2018
881
official solves on the record
13%
solve-to-solve spread · steadier than 50% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingChina
2×21.172.59
top 0.95%100 / 15,796
3×36.728.16
top 1.0%385 / 28,153
Skewb2.473.86
top 2.8%147 / 5,004
4×430.0433.61
top 2.9%277 / 5,926
Pyraminx3.084.50
top 3.9%467 / 10,224
3×3 one-handed12.9714.42
top 4.4%387 / 5,922
Megaminx55.441:02.86
top 7.6%181 / 1,678
5×51:05.681:09.65
top 8.8%424 / 2,816
Square-112.2416.68
top 10.3%156 / 1,362
6×62:17.692:23.29
top 19.3%430 / 1,349
7×73:29.983:39.11
top 19.8%403 / 1,261
3×3 Fewest Moves34 moves37.67
early days — 3 solves289 / 1,058
Clock10.6713.27
top 28.4%662 / 1,843
3×3 blindfolded3:52.41—
early days — 1 solve909 / 1,183

Percentile against all competitors ever ranked in each event, a fairer measure than raw rank, because the pools differ by a factor of ten.

The line so far

Weihai Open 2017: 16.78Beijing Open 2017: 15.85Beijing Ten Years Open 2017: 14.16Beijing Open 2018: 7.72Tianjin Summer Open 2018: 7.85Beijing Summer 2018: 8.96China Championship 2018: 8.80Qinhuangdao Winter 2018: 7.93Beijing Winter 2018: 8.30Qinhuangdao Open 2019: 9.38Tangshan Open 2019: 8.80Beijing Summer 2019: 8.82Tianjin Autumn 2019: 8.07Beijing Winter 2019: 7.55Beijing Spring PM 2021: 9.00Hangzhou Open 2024: 6.726.7216.7830 Apr 201715 Dec 2024

Best single per competition, 3×3. Faster is higher — the axis is the right way up.

The story so far

Competitions

Reading this page: a single is one solve's time · an average is the middle three of five solves, best and worst discarded · a PB is a personal best · a DNF (did not finish) is an attempt with no valid result: a popped piece, an unsolved face, an over-limit memorisation · top X% compares against everyone ever ranked in that event, which is fairer than raw rank because event pools differ tenfold.

The circuit

The people whose scorecards keep turning up next to his.

Next targets

  • A sub-1 2×2 single — 1,032 people have one; it is 0.17 away.
  • A sub-6 3×3 single — 1,376 people have one; it is 0.72 away.

Targets move as he improves.