People · China
Shuduan Zhang (张书端)
2×2 · top 1.4% of 186,767 all-time · competing since May 2024 · 2024ZHAN69
Shuduan Zhang (张书端) has been competing for 2 years. His best event is the 2×2: a personal-best single of 1.31, set at Zibo Open 2025, puts him in the top 1.4% of the 186,767 people who have ever been ranked in the event, and 165th in China. Until November 2008, no official 2×2 solve in the world had been that fast. Across 3 competitions since May 2024, he has put 105 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 6 counted rounds. His 3×3 best has come down from 9.63 in May 2024 to 8.05, a 16% improvement. Shuduan has entered three competitions, more competitions than 69% 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 | 1.31 | 2.65 | top 1.4% | 165 / 15,796 | |
| Pyraminx | 2.29 | 3.95 | top 1.7% | 198 / 10,224 | |
| 3×3 | 8.05 | 9.46 | top 2.9% | 1,038 / 28,153 | |
| Skewb | 2.75 | 4.95 | top 3.8% | 201 / 5,004 |
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 2024Five personal bests in one day at Yancheng Open 2024.
- 19 May 2024First competition: Zibo Open 2024. A 9.63 3×3 single to start from.
Competitions
- Zibo Open 2025 · 10 Aug 2025 — 2 personal bests set
- Yancheng Open 2024 · 21 Dec 2024 — 5 personal bests set
- Zibo Open 2024 · 19 May 2024
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.
- Zhiyuan Xue (薛智远) — met in 18 rounds, finished ahead twice
- Yiheng Wang (王艺衡) — met in 16 rounds, never finished ahead
- Jiayao Guo (郭家瑶) — met in 15 rounds, finished ahead 4 times
Next targets
- A sub-1 2×2 single — 1,032 people have one; it is 0.31 away.
- A sub-2 Pyraminx single — 1,476 people have one; it is 0.29 away.
Targets move as he improves.