People · Republic of Korea
Sung Ha Heo (허성하)
3×3 · top 18.4% of 288,433 all-time · competing since October 2024 · 2024HEOS01
Sung Ha Heo (허성하) has been competing for 2 years. His best event is the 3×3: a personal-best single of 13.24, set at Okay Okcheon 2026, puts him in the top 18.4% of the 288,433 people who have ever been ranked in the event, and 1,028th in Republic of Korea. Across 9 competitions since October 2024, he has put 130 official solves on the record across seven events. Solve to solve, his 3×3 times vary about 16% around a typical one, an early reading from 8 counted rounds. That figure sets aside his 3 DNFs. His 3×3 best has come down from 35.10 in January 2025 to 13.24, a 62% improvement. Sung has entered nine competitions, more competitions than 91% 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 | 13.24 | 16.20 | top 18.4% | 1,028 / 4,390 | |
| Pyraminx | 6.63 | 10.78 | top 24.9% | 388 / 1,294 | |
| Skewb | 7.30 | 12.77 | top 36.1% | 376 / 874 | |
| 2×2 | 5.04 | 6.21 | top 39.9% | 1,177 / 2,334 | |
| 4×4 | 1:14.16 | 1:20.38 | top 50.9% | 846 / 1,316 | |
| Clock | 18.84 | 21.57 | top 61.3% | 393 / 541 | |
| 3×3 one-handed | 52.16 | — | early days — 2 solves | 848 / 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
- 17 Oct 2026First sub-15 3×3: 13.24 at Okay Okcheon 2026.
- 17 Oct 2026Three personal bests in one day at Okay Okcheon 2026.
- 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
- Okay Okcheon 2026 · 17 Oct 2026 — 3 personal bests set
- 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 28 rounds, finished ahead 18 times
- YongGeal Lee (이용걸) — met in 28 rounds, finished ahead 6 times
- Choi Goho (최고호) — met in 28 rounds, never finished ahead
Next targets
- A sub-12 3×3 single — 40,277 people have one; it is 1.24 away.
- A sub-6 Pyraminx single — 26,233 people have one; it is 0.63 away.
Targets move as he improves.