People · Republic of Korea
Joohyeon Yu (류주현)
3×3 · top 19.2% of 288,433 all-time · competing since December 2023 · 2023YUJO02
Joohyeon Yu (류주현) has been competing for 3 years. Her best event is the 3×3: a personal-best single of 13.47, set at Korea Open 2025, puts her in the top 19.2% of the 288,433 people who have ever been ranked in the event, and 1,070th in Republic of Korea. Across 6 competitions since December 2023, she has put 90 official solves on the record across nine events. Solve to solve, her 3×3 times vary about 24% around a typical one, an early reading from 5 counted rounds. Her 3×3 best has come down from 23.77 in December 2023 to 13.47, a 43% improvement. Joohyeon has entered six competitions, more competitions than 86% 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 | 13.47 | 14.01 | top 19.2% | 1,070 / 4,390 | |
| 4×4 | 53.11 | 1:17.87 | top 28.6% | 511 / 1,316 | |
| 2×2 | 4.92 | 6.05 | top 38.4% | 1,135 / 2,334 | |
| Skewb | 8.60 | 11.18 | top 45.8% | 456 / 874 | |
| Megaminx | 2:02.83 | 2:24.27 | top 47.4% | 302 / 526 | |
| Pyraminx | 9.88 | 12.06 | top 52.1% | 759 / 1,294 | |
| 5×5 | 2:18.53 | 3:02.40 | top 60.3% | 499 / 725 | |
| Clock | 20.74 | — | early days — 2 solves | 428 / 541 | |
| 3×3 one-handed | 47.37 | — | early days — 2 solves | 818 / 981 |
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
- 15 Aug 2025Three personal bests in one day at Korea Open 2025.
- 15 Aug 2024First sub-15 3×3: 14.03 at Korean Championship 2024.
- 3 Feb 2024First sub-20 3×3: 17.94 at Daegu Cold Winter 2024.
- 15 Dec 2023First competition: Korean Championship 2023. A 23.77 3×3 single to start from.
Competitions
- Korea Open 2025 · 15 Aug 2025 — 3 personal bests set
- Happy Suseong 2025 · 18 Jan 2025 — 1 personal best set
- Daegu Autumn 2024 · 26 Oct 2024
- Korean Championship 2024 · 15 Aug 2024 — 2 personal bests set
- Daegu Cold Winter 2024 · 3 Feb 2024 — 2 personal bests set
- Korean Championship 2023 · 15 Dec 2023
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 her.
- Kangmin Ko (고강민) — met in 20 rounds, finished ahead 4 times
- Choi Goho (최고호) — met in 20 rounds, finished ahead twice
- Ko Youngjin (고영진) — met in 20 rounds, finished ahead once
Next targets
- A sub-12 3×3 single — 40,277 people have one; it is 1.47 away.
- A sub-50 4×4 single — 21,117 people have one; it is 3.11 away.
Targets move as she improves.