People · United States
Jack Li Xi Chen (陈立曦)
3×3 · top 7.4% of 284,439 all-time · competing since August 2024 · 2024CHEJ01
Jack Li Xi Chen (陈立曦) has been competing for 2 years. His best event is the 3×3: a personal-best single of 10.00, set at Belmont Spring 2026, puts him in the top 7.4% of the 284,439 people who have ever been ranked in the event, and 4,099th in the United States. Until May 2007, no official 3×3 solve in the world had been that fast. Across 10 competitions since August 2024, he has put 120 official solves on the record across three events. Solve to solve, his 3×3 times vary about 13% around a typical one; 53% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 40.37 in August 2024 to 10.00, a 75% improvement. Jack has entered ten competitions, more competitions than 92% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | United States | |
|---|---|---|---|---|---|
| 3×3 | 10.00 | 12.09 | top 7.4% | 4,099 / 59,724 | |
| 2×2 | 2.93 | 5.83 | top 13.4% | 5,283 / 40,951 | |
| Pyraminx | 6.97 | 9.17 | top 27.6% | 7,587 / 28,708 |
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
- 22 Jun 2025First sub-15 3×3: 12.45 at Yunnan Open 2025.
- 12 Jan 2025First sub-20 3×3: 17.12 at Bay Area Speedcubin' 67 - San Ramon 2025.
- 3 Nov 2024First sub-30 3×3: 21.30 at Cool Down Berkeley 2024.
- 17 Aug 2024First competition: Davis Summer 2024. A 40.37 3×3 single to start from.
Competitions
- Zhangzhou Open 2026 · 27 Jun 2026
- Belmont Spring 2026 · 2 May 2026 — 1 personal best set
- Davis Winter 2026 · 7 Feb 2026 — 1 personal best set
- Bay Area Speedcubin' 68 - Belmont 2025 · 13 Dec 2025
- Berkeley Fall 2025 · 4 Oct 2025 — 2 personal bests set
- Yunnan Open 2025 · 22 Jun 2025 — 2 personal bests set
- Bay Area Side Events Day 2025 · 23 Feb 2025 — 1 personal best set
- Bay Area Speedcubin' 67 - San Ramon 2025 · 12 Jan 2025 — 2 personal bests set
- Cool Down Berkeley 2024 · 3 Nov 2024 — 1 personal best set
- Davis Summer 2024 · 17 Aug 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.
- Micah Yeo — met in 17 rounds, never finished ahead
- Matthew Ketroser — met in 17 rounds, never finished ahead
- Mitchell Lane — met in 15 rounds, never finished ahead
Next targets
- A sub-8 3×3 single — 7,931 people have one; it is 2.00 away.
- A sub-2 2×2 single — 8,848 people have one; it is 0.93 away.
Targets move as he improves.