People · Republic of Korea
Jusun Choi (최주선)
3×3 · top 0.57% of 284,439 all-time · competing since May 2011 · 2011CHOI04
Jusun Choi (최주선) has been competing for 15 years. His best event is the 3×3: a personal-best single of 6.13, set at UCLA Spring 2025, puts him in the top 0.57% of the 284,439 people who have ever been ranked in the event, and 42nd in Republic of Korea. Until June 2011, no official 3×3 solve in the world had been that fast. Across 51 competitions since May 2011, he has put 2,271 official solves on the record across 13 events. Solve to solve, his 3×3 times vary about 13% around a typical one, steadier than 59% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 23.02 in May 2011 to 6.13, a 73% improvement. Jusun has entered 51 competitions, more competitions than 99% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Republic of Korea | |
|---|---|---|---|---|---|
| 3×3 | 6.13 | 7.55 | top 0.57% | 42 / 4,352 | |
| Skewb | 1.88 | 3.02 | top 1.1% | 12 / 854 | |
| 3×3 one-handed | 10.15 | 13.22 | top 1.2% | 18 / 966 | |
| Megaminx | 39.60 | 46.12 | top 1.5% | 12 / 524 | |
| 2×2 | 1.41 | 2.63 | top 1.8% | 46 / 2,319 | |
| 4×4 | 28.46 | 32.64 | top 2.0% | 49 / 1,308 | |
| 5×5 | 1:01.57 | 1:08.78 | top 6.4% | 68 / 716 | |
| Pyraminx | 4.26 | 6.48 | top 9.0% | 137 / 1,271 | |
| Square-1 | 17.63 | 21.36 | top 22.5% | 99 / 371 | |
| 6×6 | 2:31.52 | 2:37.05 | top 26.4% | 116 / 329 | |
| 7×7 | 5:06.72 | 5:15.93 | early days — 3 solves | 167 / 254 | |
| Clock | 26.56 | — | top 79.4% | 471 / 536 | |
| 3×3 blindfolded | 8:40.48 | — | early days — 1 solve | 213 / 217 |
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
- 28 Sep 2024Four personal bests in one day at Super Duper San Diego 2024.
- 17 Sep 2023Three personal bests in one day at SacCubing XV 2023.
- 17 Jun 2023Five personal bests in one day at Claws Up Summer 2023.
- 10 Nov 2019Three personal bests in one day at Berkeley Fall 2019.
- 1 Jun 2019Three personal bests in one day at Bay Area Speedcubin' 17 2019.
- 21 Apr 2019Three personal bests in one day at Berkeley Spring 2019.
Competitions
- Davis Big Summer 2026 · 8 Aug 2026 — 2 personal bests set
- West Coast Cubing Western Championship 2026 · 23 May 2026 — 1 personal best set
- Duper Super Davis Spring 2026 · 19 Apr 2026
- UCSD March B 2026 · 1 Mar 2026
- Huntington Park Winter 2025 · 6 Dec 2025
- Mission Viejo Fall 2025 · 12 Oct 2025 — 1 personal best set
- UCLA Westerns Warmup 2025 · 24 Aug 2025
- Rubik's WCA World Championship 2025 · 3 Jul 2025
- Let's Cube Long Beach 2025 · 25 May 2025 — 2 personal bests set
- UCLA Spring 2025 · 20 Apr 2025 — 1 personal best set
- Cube Against Cancer - Orange County 2025 · 30 Mar 2025
- Berkeley Spring 2025 · 2 Mar 2025
- Nub Open Lake Forest 2024 · 15 Dec 2024
- Super Duper San Diego 2024 · 28 Sep 2024 — 4 personal bests set
- Aliso Niguel Summer 2024 · 8 Sep 2024
- La La Land 2024 · 31 Aug 2024
- Bay Area Speedcubin' 63 - Atherton 2024 · 22 Jun 2024 — 2 personal bests set
- Claws Up Final Touchdown 2024 · 5 May 2024 — 1 personal best set
- Chico Spring 2024 · 20 Apr 2024 — 2 personal bests set
- Davis Winter 2024 · 18 Feb 2024
- Berkeley Winter 2024 · 4 Feb 2024
- SacCubing XVI 2024 · 20 Jan 2024 — 2 personal bests set
- Folsom Winter 2023 · 17 Dec 2023 — 2 personal bests set
- Claws Up Winter 2023 · 3 Dec 2023
- Berkeley Fall 2023 · 18 Nov 2023 — 1 personal best set
- Davis Fall 2023 · 29 Oct 2023 — 1 personal best set
- Bay Area Speedcubin' 53 - Berkeley 2023 · 14 Oct 2023 — 1 personal best set
- SacCubing XV 2023 · 17 Sep 2023 — 3 personal bests set
- Bay Area Speedcubin' 51 Live - SSF 2023 · 3 Sep 2023 — 2 personal bests set
- Berkeley Summer 2023 · 26 Aug 2023 — 2 personal bests set
- Bay Area Speedcubin' 50 - Berkeley 2023 · 6 Aug 2023 — 2 personal bests set
- CubingUSA Western Championship 2023 · 30 Jun 2023 — 2 personal bests set
- Claws Up Summer 2023 · 17 Jun 2023 — 5 personal bests set
- Bay Area Speedcubin' 44 2023 · 22 Apr 2023 — 1 personal best set
- Bay Area Speedcubin' 43 2023 · 1 Apr 2023 — 2 personal bests set
- Bay Area Speedcubin' 21 2019 · 1 Dec 2019 — 1 personal best set
- Berkeley Fall 2019 · 10 Nov 2019 — 3 personal bests set
- Bay Area Speedcubin' 20 2019 · 12 Oct 2019
- Berkeley Summer 2019 · 21 Sep 2019 — 1 personal best set
- Bay Area Speedcubin' 17 2019 · 1 Jun 2019 — 3 personal bests set
- Berkeley Spring 2019 · 21 Apr 2019 — 3 personal bests set
- Bay Area Speedcubin' 14 2019 · 16 Feb 2019 — 2 personal bests set
- Bay Area Speedcubin' 13 2019 · 13 Jan 2019 — 5 personal bests set
- Berkeley Fall 2018 · 17 Nov 2018 — 2 personal bests set
- Berkeley Summer 2018 · 15 Sep 2018 — 3 personal bests set
- Korean KAIST Style 2015 · 9 Oct 2015 — 3 personal bests set
- Good Cube Show Korea 2015 · 30 May 2015 — 1 personal best set
- Spring Comes 2015 · 11 Apr 2015 — 2 personal bests set
- KAIST Fall 2014 · 27 Dec 2014 — 2 personal bests set
- Thanks Cubing Day 2014 · 20 Sep 2014 — 2 personal bests set
- Houston Spring 2011 · 21 May 2011
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.
- Nico Harper (李有為) — met in 243 rounds, finished ahead 107 times
- Paul Mahvi — met in 243 rounds, finished ahead 99 times
- Jason Ostdiek — met in 198 rounds, finished ahead 120 times
Next targets
- A sub-6 3×3 single — 1,376 people have one; it is 0.13 away.
- A sub-1 Skewb single — 35 people have one; it is 0.88 away.
Targets move as he improves.