People · China
Haichen Liu (刘海辰)
2×2 · top 7.1% of 186,767 all-time · competing since July 2019 · 2019LIUH08
Haichen Liu (刘海辰) has been competing for 7 years. His best event is the 2×2: a personal-best single of 2.31, set at Heze Open 2019, puts him in the top 7.1% of the 186,767 people who have ever been ranked in the event, and 1,016th in China. Until February 2008, no official 2×2 solve in the world had been that fast. Across 5 competitions since July 2019, he has put 131 official solves on the record across eight events. Solve to solve, his 3×3 times vary about 11% around a typical one, steadier than 92% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 13.48 in July 2019 to 11.59, a 14% improvement. Haichen has entered five competitions, more competitions than 83% 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 | 2.31 | 3.77 | top 7.1% | 1,016 / 15,796 | |
| 3×3 | 11.59 | 14.02 | top 12.5% | 4,932 / 28,153 | |
| 4×4 | 43.62 | 50.06 | top 16.6% | 1,790 / 5,926 | |
| Skewb | 7.01 | 11.45 | top 33.7% | 2,057 / 5,004 | |
| Clock | 15.46 | 17.38 | top 49.8% | 1,165 / 1,843 | |
| Pyraminx | 10.12 | 13.46 | top 53.9% | 5,632 / 10,224 | |
| 3×3 one-handed | 37.73 | — | early days — 2 solves | 4,977 / 5,922 | |
| 5×5 | 2:37.14 | — | early days — 2 solves | 2,554 / 2,816 |
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
- 4 Mar 2023Three personal bests in one day at Rhein-Neckar Open 2023.
- 21 Jul 2019First competition: Heze Open 2019. A 13.48 3×3 single to start from.
Competitions
- German Nationals 2023 · 4 Aug 2023
- Rahn Education Leipzig 2023 · 1 Apr 2023 — 1 personal best set
- Rhein-Neckar Open 2023 · 4 Mar 2023 — 3 personal bests set
- Shandong Open 2019 · 4 Oct 2019 — 2 personal bests set
- Heze Open 2019 · 21 Jul 2019
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.
- Annika Stein — met in 15 rounds, finished ahead once
- Laura Holzhauer — met in 15 rounds, finished ahead once
- Luis Kleinheinz — met in 15 rounds, finished ahead once
Next targets
- A sub-2 2×2 single — 8,848 people have one; it is 0.31 away.
- A sub-10 3×3 single — 21,172 people have one; it is 1.59 away.
Targets move as he improves.