People · Republic of Korea
Sungmin Lee (이성민)
Clock · top 2.0% of 32,817 all-time · competing since January 2024 · 2024LEES03
Sungmin Lee (이성민) has been competing for 3 years. His best event is the Clock: a personal-best single of 3.81, set at Ansan Favorites 2026, puts him in the top 2.0% of the 32,817 people who have ever been ranked in the event, and 13th in Republic of Korea. Until June 2015, no official Clock solve in the world had been that fast. Across 5 competitions since January 2024, he has put 184 official solves on the record across twelve events. Solve to solve, his 3×3 times vary about 14% around a typical one, an early reading from 7 counted rounds. His 3×3 best has come down from 12.36 in January 2024 to 9.12, a 26% improvement. Sungmin 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 | Republic of Korea | |
|---|---|---|---|---|---|
| Clock | 3.81 | 4.32 | top 2.0% | 13 / 541 | |
| 4×4 | 31.82 | 36.07 | top 4.1% | 83 / 1,316 | |
| 3×3 | 9.12 | 11.01 | top 5.2% | 307 / 4,390 | |
| 5×5 | 1:03.45 | 1:12.13 | top 7.6% | 78 / 725 | |
| 2×2 | 2.48 | 3.75 | top 8.8% | 258 / 2,334 | |
| 3×3 one-handed | 16.88 | 23.13 | top 12.3% | 174 / 981 | |
| Pyraminx | 5.02 | 7.84 | top 13.3% | 207 / 1,294 | |
| 6×6 | 2:05.19 | 2:27.67 | top 13.4% | 67 / 335 | |
| Skewb | 4.38 | 8.12 | top 13.6% | 148 / 874 | |
| Square-1 | 21.74 | 32.23 | top 32.0% | 150 / 383 | |
| 7×7 | 4:22.70 | 4:41.61 | early days — 3 solves | 129 / 256 | |
| Megaminx | 1:53.29 | 1:57.41 | top 42.3% | 271 / 526 |
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 2025First sub-10 3×3: 9.12 at Korea Open 2025.
- 15 Aug 2025Six personal bests in one day at Korea Open 2025.
- 8 Feb 2025Three personal bests in one day at Anyang Haseyo 2025.
- 6 Jan 2024First competition: Seoul Open 2024. A 12.36 3×3 single to start from.
Competitions
- Ansan Favorites 2026 · 7 Feb 2026 — 2 personal bests set
- Korea Open 2025 · 15 Aug 2025 — 6 personal bests set
- Please Big Cubes Korea 2025 · 10 May 2025
- Anyang Haseyo 2025 · 8 Feb 2025 — 3 personal bests set
- Seoul Open 2024 · 6 Jan 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.
- Hyunmin Roh (노현민) — met in 35 rounds, finished ahead 13 times
- Minseo Gu (구민서) — met in 34 rounds, finished ahead 3 times
- Ko Youngjin (고영진) — met in 32 rounds, finished ahead 15 times
Next targets
- A sub-3 Clock single — 248 people have one; it is 0.81 away.
- A sub-30 4×4 single — 2,465 people have one; it is 1.82 away.
Targets move as he improves.