People · China
Zuozhun Kong (孔祚淳)
3×3 · top 8.3% of 284,439 all-time · competing since April 2018 · 2018KONG05
Zuozhun Kong (孔祚淳) has been competing for 8 years. His best event is the 3×3: a personal-best single of 10.28, set at Tokyo Challenge Winter B 2023, puts him in the top 8.3% of the 284,439 people who have ever been ranked in the event, and 3,240th in China. Until May 2007, no official 3×3 solve in the world had been that fast. Across 6 competitions since April 2018, he has put 36 official solves on the record across four events. Solve to solve, his 3×3 times vary about 15% around a typical one, an early reading from 5 counted rounds. His 3×3 best has come down from 17.27 in December 2020 to 10.28, a 40% improvement. Zuozhun has entered six competitions, more competitions than 86% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | China | |
|---|---|---|---|---|---|
| 3×3 | 10.28 | 12.15 | top 8.3% | 3,240 / 28,153 | |
| 3×3 one-handed | 25.81 | 30.76 | top 36.3% | 3,423 / 5,922 | |
| 2×2 | 5.50 | 7.13 | top 45.3% | 7,772 / 15,796 | |
| Pyraminx | 15.37 | — | early days — 2 solves | 8,197 / 10,224 |
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
- 12 Feb 2023First sub-15 3×3: 10.28 at Tokyo Challenge Winter B 2023.
- 6 Apr 2018First competition: Cross-strait Cubing Exchange 2018.
Competitions
- Kanto Spring 2025 · 31 May 2025
- Tokyo Spring AM 2025 · 20 Apr 2025
- Tokyo Challenge IV 2023 · 9 Apr 2023
- Tokyo Challenge Winter B 2023 · 12 Feb 2023 — 1 personal best set
- Guangzhou Good Morning 2020 · 13 Dec 2020
- Cross-strait Cubing Exchange 2018 · 6 Apr 2018
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.
- Takumi Kawazoe (川添匠) — met in 5 rounds, never finished ahead
- Kai Harada (原田櫂) — met in 4 rounds, finished ahead twice
- Ao Nogami (野上碧) — met in 4 rounds, never finished ahead
Next targets
- A sub-10 3×3 single — 21,172 people have one; it is 0.28 away.
- A sub-25 3×3 one-handed single — 25,198 people have one; it is 0.81 away.
Targets move as he improves.