People · China
Jiarong Ke (柯家荣)
2×2 · top 9.3% of 186,767 all-time · competing since May 2017 · 2017KEJI01
Jiarong Ke (柯家荣) has been competing for 9 years. His best event is the 2×2: a personal-best single of 2.54, set at Fujian Championship 2018, puts him in the top 9.3% of the 186,767 people who have ever been ranked in the event, and 1,383rd in China. Until February 2008, no official 2×2 solve in the world had been that fast. Across 9 competitions since May 2017, he has put 311 official solves on the record across twelve events. Solve to solve, his 3×3 times vary about 14% around a typical one; 69% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 16.56 in May 2017 to 10.85, a 34% improvement. Jiarong has entered nine competitions, more competitions than 91% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | China | |
|---|---|---|---|---|---|
| 2×2 | 2.54 | 4.27 | top 9.3% | 1,383 / 15,796 | |
| 7×7 | 2:56.00 | 3:13.40 | top 9.4% | 193 / 1,261 | |
| 3×3 | 10.85 | 14.34 | top 10.0% | 3,924 / 28,153 | |
| 5×5 | 1:14.62 | 1:24.16 | top 15.0% | 729 / 2,816 | |
| 6×6 | 2:09.75 | 2:20.59 | top 15.2% | 332 / 1,349 | |
| Skewb | 4.89 | 7.67 | top 17.3% | 1,078 / 5,004 | |
| 3×3 one-handed | 19.42 | 23.53 | top 19.0% | 1,897 / 5,922 | |
| 4×4 | 50.65 | 54.10 | top 25.5% | 2,706 / 5,926 | |
| Pyraminx | 7.54 | 11.60 | top 32.4% | 3,551 / 10,224 | |
| Megaminx | 1:45.07 | 1:50.22 | top 37.6% | 1,099 / 1,678 | |
| Clock | 14.27 | 19.73 | top 45.0% | 1,059 / 1,843 | |
| Square-1 | 31.34 | 41.36 | top 51.9% | 890 / 1,362 |
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
Best single per competition, 3×3. Faster is higher — the axis is the right way up.
The story so far
- 21 Dec 2019Four personal bests in one day at Shaoxing Open 2019.
- 12 May 2018Six personal bests in one day at Fujian Championship 2018.
- 30 Apr 2018Six personal bests in one day at Nanjing Spring 2018.
- 6 Apr 2018Five personal bests in one day at Cross-strait Cubing Exchange 2018.
- 10 Dec 2017Four personal bests in one day at Big 'n Blind 2017.
- 5 Nov 2017First sub-15 3×3: 13.26 at Fuzhou Autumn 2017.
Competitions
- Shaoxing Open 2019 · 21 Dec 2019 — 4 personal bests set
- Nanjing Autumn 2019 · 3 Nov 2019 — 2 personal bests set
- Fujian Championship 2018 · 12 May 2018 — 6 personal bests set
- Nanjing Spring 2018 · 30 Apr 2018 — 6 personal bests set
- Cross-strait Cubing Exchange 2018 · 6 Apr 2018 — 5 personal bests set
- Big 'n Blind 2017 · 10 Dec 2017 — 4 personal bests set
- Fuzhou Autumn 2017 · 5 Nov 2017 — 7 personal bests set
- Quanzhou Side Event 2017 · 19 Aug 2017 — 1 personal best set
- Fuzhou Open 2017 · 28 May 2017 — 1 personal best set
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.
- Baiqiang Dong (董百强) — met in 36 rounds, finished ahead 15 times
- Chengzhang Lin (林成璋) — met in 28 rounds, finished ahead 7 times
- Wong Kin Lok (黃健樂) — met in 28 rounds, never finished ahead
Next targets
- A sub-2 2×2 single — 8,848 people have one; it is 0.54 away.
- A sub-2:00 7×7 single — 83 people have one; it is 56.00 away.
Targets move as he improves.