People · Republic of Korea
Shin Seong Su (신성수)
3×3 · top 6.6% of 284,439 all-time · competing since December 2015 · 2015SUSH02
Shin Seong Su (신성수) has been competing for 11 years. His best event is the 3×3: a personal-best single of 9.67, set at Hamoye Jinju 2026, puts him in the top 6.6% of the 284,439 people who have ever been ranked in the event, and 387th in Republic of Korea. Until November 2007, no official 3×3 solve in the world had been that fast. Across 8 competitions since December 2015, he has put 85 official solves on the record across five events. Solve to solve, his 3×3 times vary about 12% around a typical one, an early reading from 9 counted rounds. His 3×3 best has come down from 21.82 in December 2015 to 9.67, a 56% improvement. Shin has entered eight competitions, more competitions than 90% 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 | 9.67 | 11.75 | top 6.6% | 387 / 4,352 | |
| 2×2 | 4.72 | 6.39 | top 35.8% | 1,056 / 2,319 | |
| 3×3 blindfolded | 2:46.66 | — | top 48.6% | 117 / 217 | |
| 4×4 | 1:15.82 | 1:41.10 | top 52.4% | 864 / 1,308 | |
| 5×5 | 2:26.75 | 2:44.24 | top 64.3% | 515 / 716 |
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
- 16 May 2026First sub-10 3×3: 9.67 at Hamoye Jinju 2026.
- 16 May 2026Three personal bests in one day at Hamoye Jinju 2026.
- 23 Feb 2019First sub-15 3×3: 13.83 at Seoul Winter 2019.
- 28 Jul 2017First sub-20 3×3: 15.80 at Korean Championship 2017.
- 28 Jul 2017Three personal bests in one day at Korean Championship 2017.
- 19 Dec 2015First competition: Korea Winter 2015. A 21.82 3×3 single to start from.
Competitions
- Hamoye Jinju 2026 · 16 May 2026 — 3 personal bests set
- Cubing Korea 2019 · 28 Dec 2019 — 1 personal best set
- Seoul Winter 2019 · 23 Feb 2019 — 1 personal best set
- Korea Winter 2019 · 19 Jan 2019
- Korean Championship 2017 · 28 Jul 2017 — 3 personal bests set
- Cube Is Good 2016 · 22 May 2016 — 2 personal bests set
- Jeonju Spring 2016 · 2 Apr 2016 — 1 personal best set
- Korea Winter 2015 · 19 Dec 2015
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 18 rounds, finished ahead 3 times
- Ilkyoo Choi (최일규) — met in 16 rounds, finished ahead 5 times
- Yeon Kyun Park (박연균) — met in 13 rounds, never finished ahead
Next targets
- A sub-8 3×3 single — 7,931 people have one; it is 1.67 away.
- A sub-4 2×2 single — 49,452 people have one; it is 0.72 away.
Targets move as he improves.