People · Republic of Korea
Sung Ha Heo (허성하)
Pyraminx · top 24.9% of 129,321 all-time · competing since October 2024 · 2024HEOS01
Sung Ha Heo (허성하) has been competing for a year. His best event is the Pyraminx: a personal-best single of 6.63, set at Daegu Autumn 2024, puts him in the top 24.9% of the 129,321 people who have ever been ranked in the event, and 379th in Republic of Korea. Across 8 competitions since October 2024, he has put 115 official solves on the record across seven events. Solve to solve, his 3×3 times vary about 17% around a typical one, an early reading from 7 counted rounds. That figure sets aside his 3 DNFs. His 3×3 best has come down from 35.10 in January 2025 to 19.37, a 45% improvement. Sung 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 | |
|---|---|---|---|---|---|
| Pyraminx | 6.63 | 10.78 | top 24.9% | 379 / 1,271 | |
| 3×3 | 19.37 | 20.51 | top 38.1% | 1,990 / 4,352 | |
| 2×2 | 5.04 | 6.21 | top 39.8% | 1,162 / 2,319 | |
| Skewb | 9.71 | 12.77 | top 53.1% | 504 / 854 | |
| 4×4 | 1:25.77 | 1:33.07 | top 60.4% | 960 / 1,308 | |
| Clock | 18.84 | 21.57 | top 61.3% | 388 / 536 | |
| 3×3 one-handed | 52.16 | — | early days — 2 solves | 835 / 966 |
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 2026First sub-20 3×3: 19.37 at Korea Open 2026.
- 15 Aug 2025Three personal bests in one day at Korea Open 2025.
- 29 Jun 2025First sub-30 3×3: 25.12 at Osan Summer 2025.
- 26 Oct 2024First competition: Daegu Autumn 2024.
Competitions
- Korea Open 2026 · 15 Aug 2026 — 2 personal bests set
- Hamoye Jinju 2026 · 16 May 2026
- Uhseo Osong 2025 · 15 Nov 2025 — 2 personal bests set
- We Laugh Pohanghang 2025 · 14 Sep 2025 — 1 personal best set
- Korea Open 2025 · 15 Aug 2025 — 3 personal bests set
- Osan Summer 2025 · 29 Jun 2025 — 1 personal best set
- Happy Suseong 2025 · 18 Jan 2025 — 1 personal best set
- Daegu Autumn 2024 · 26 Oct 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.
- Hyunjo Kim (김현조) — met in 25 rounds, finished ahead 15 times
- YongGeal Lee (이용걸) — met in 25 rounds, finished ahead 5 times
- Choi Goho (최고호) — met in 25 rounds, never finished ahead
Next targets
- A sub-6 Pyraminx single — 25,870 people have one; it is 0.63 away.
- A sub-15 3×3 single — 69,493 people have one; it is 4.37 away.
Targets move as he improves.