People · Republic of Korea
JeongMin Yu (유정민)
3×3 · top 4.0% of 284,439 all-time · competing since January 2007 · 2007JEON01
JeongMin Yu (유정민) has been competing for 20 years. His best event is the 3×3: a personal-best single of 8.63, set at Seoul Spring 2026, puts him in the top 4.0% of the 284,439 people who have ever been ranked in the event, and 237th in Republic of Korea. Until July 2008, no official 3×3 solve in the world had been that fast. Across 13 competitions since January 2007, he has put 198 official solves on the record across seven events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 65% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 11.09 in January 2007 to 8.63, a 22% improvement. JeongMin has entered 13 competitions, more competitions than 94% 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 | 8.63 | 10.72 | top 4.0% | 237 / 4,352 | |
| Square-1 | 14.02 | 15.17 | top 14.2% | 55 / 371 | |
| 3×3 one-handed | 19.34 | 20.87 | top 18.8% | 262 / 966 | |
| 5×5 | 1:33.68 | 1:53.76 | top 30.4% | 264 / 716 | |
| 4×4 | 56.22 | 1:12.03 | top 32.2% | 556 / 1,308 | |
| Megaminx | 1:42.27 | 1:44.11 | early days — 3 solves | 237 / 524 | |
| 2×2 | 6.06 | 7.63 | top 51.5% | 1,453 / 2,319 |
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
- 31 Dec 2011First sub-10 3×3: 9.96 at Cubing Korea December 2011.
- 7 Jan 2007First competition: KCRC Championship 2007. A 11.31 3×3 single to start from.
Competitions
- Seoul Spring 2026 · 22 Mar 2026 — 1 personal best set
- Korean Championship 2016 · 12 Aug 2016
- Happy Sheep Year 2015 · 24 Jan 2015
- Asian Championship 2014 · 1 Nov 2014 — 1 personal best set
- Thanks Cubing Day 2014 · 20 Sep 2014
- Cubing Korea January 2012 · 15 Jan 2012 — 1 personal best set
- Cubing Korea December 2011 · 31 Dec 2011 — 1 personal best set
- Cubing Korea Xmas Eve 2011 · 24 Dec 2011 — 1 personal best set
- Korea Cube Championship 2010 · 23 Jan 2010 — 1 personal best set
- KCA Korea Open 2008 · 20 Jan 2008 — 1 personal best set
- KCRC Busan competition 2007 · 12 Aug 2007
- Japan Open 2007 · 28 Jul 2007 — 2 personal bests set
- KCRC Championship 2007 · 7 Jan 2007 — 2 personal bests 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.
- Choi Goho (최고호) — met in 21 rounds, finished ahead 18 times
- Jong-Ho Jeong (정종호) — met in 20 rounds, finished ahead 10 times
- SeungWoon Lee (이승운) — met in 19 rounds, finished ahead 11 times
Next targets
- A sub-8 3×3 single — 7,931 people have one; it is 0.63 away.
- A sub-12 Square-1 single — 2,502 people have one; it is 2.02 away.
Targets move as he improves.