People · China
Shidong Zhang (张世东)
4×4 · top 2.8% of 85,040 all-time · competing since September 2017 · 2017ZHAS06
Shidong Zhang (张世东) has been competing for 9 years. His best event is the 4×4: a personal-best single of 29.79, set at UCSD TritoNxN 2026, puts him in the top 2.8% of the 85,040 people who have ever been ranked in the event, and 275th in China. Until April 2012, no official 4×4 solve in the world had been that fast. Across 16 competitions since September 2017, he has put 439 official solves on the record across eleven events. Solve to solve, his 3×3 times vary about 11% around a typical one, steadier than 86% of the 36,406 competitors with ten or more counted rounds. His 5×5 best has come down from 1:28.66 in September 2017 to 54.82, a 38% improvement. Shidong has entered 16 competitions, more competitions than 96% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | China | |
|---|---|---|---|---|---|
| 4×4 | 29.79 | 38.11 | top 2.8% | 275 / 5,999 | |
| 5×5 | 54.82 | 1:02.88 | top 3.3% | 156 / 2,857 | |
| 6×6 | 1:44.65 | 1:53.73 | top 5.4% | 121 / 1,363 | |
| 3×3 | 9.30 | 12.31 | top 5.6% | 2,212 / 28,499 | |
| 7×7 | 2:43.97 | 2:45.10 | top 6.4% | 134 / 1,274 | |
| 3×3 one-handed | 20.04 | 25.02 | top 20.6% | 2,093 / 5,994 | |
| 2×2 | 4.55 | 5.99 | top 33.6% | 5,828 / 15,939 | |
| Pyraminx | 9.80 | 14.03 | top 51.5% | 5,438 / 10,269 | |
| Megaminx | 2:11.10 | 2:23.68 | top 51.9% | 1,358 / 1,693 | |
| Clock | 28.21 | — | early days — 2 solves | 1,719 / 1,887 | |
| 3×3 Fewest Moves | 54 moves | — | early days — 1 solve | 1,011 / 1,071 |
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, 5×5. Faster is higher — the axis is the right way up.
The story so far
- 4 Oct 2025First sub-10 3×3: 9.30 at Nub Open Trabuco Hills Fall 2025.
- 4 Oct 2025Three personal bests in one day at Nub Open Trabuco Hills Fall 2025.
- 4 Jan 2025Three personal bests in one day at Santa Barbara Winter 2025.
- 30 Apr 2018Six personal bests in one day at Beijing Open 2018.
- 3 Feb 2018Three personal bests in one day at Inner Mongolia Winter 2018.
- 17 Sep 2017First competition: Beijing Ten Years Open 2017. A 13.51 3×3 single to start from.
Competitions
- Foster City Mini I 2026 · 23 Sep 2026 — 1 personal best set
- Davis Big Summer 2026 · 8 Aug 2026
- UCSD TritoNxN 2026 · 4 Apr 2026 — 2 personal bests set
- Nub Open Trabuco Hills Fall 2025 · 4 Oct 2025 — 3 personal bests set
- SCU II: Double-Scoop of FMC 2025 · 17 Aug 2025
- Reno Summer 2025 · 9 Aug 2025 — 2 personal bests set
- Missouri Championship 2025 · 18 Jul 2025 — 2 personal bests set
- Burbank Big Cubes 2025 · 26 Apr 2025 — 2 personal bests set
- Santa Barbara Winter 2025 · 4 Jan 2025 — 3 personal bests set
- Los Angeles Newcomers 2024 · 30 Mar 2024 — 1 personal best set
- Cubes on the Bayside 2023 · 18 Nov 2023 — 1 personal best set
- Beijing Winter 2019 · 7 Dec 2019 — 1 personal best set
- Beijing Summer 2018 · 29 Jul 2018
- Beijing Open 2018 · 30 Apr 2018 — 6 personal bests set
- Inner Mongolia Winter 2018 · 3 Feb 2018 — 3 personal bests set
- Beijing Ten Years Open 2017 · 17 Sep 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.
- Shane Grogan — met in 31 rounds, finished ahead 3 times
- Max Park — met in 29 rounds, never finished ahead
- Alex Lehman — met in 28 rounds, finished ahead 15 times
Next targets
- A sub-25 4×4 single — 614 people have one; it is 4.79 away.
- A sub-50 5×5 single — 733 people have one; it is 4.82 away.
Targets move as he improves.