People · Republic of Korea
Seungyun Ha (하승윤)
Square-1 · top 2.0% of 25,662 all-time · competing since July 2022 · 2022HASE01
Seungyun Ha (하승윤) has been competing for 4 years. His best event is the Square-1: a personal-best single of 7.14, set at Okcheon Autumn Breeze 2025, puts him in the top 2.0% of the 25,662 people who have ever been ranked in the event, and 9th in Republic of Korea. Until May 2014, no official Square-1 solve in the world had been that fast. Across 14 competitions since July 2022, he has put 202 official solves on the record across ten events. Solve to solve, his 3×3 times vary about 15% around a typical one; 86% of the 36,406 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 18.00 in July 2022 to 7.94, a 56% improvement. Seungyun has entered 14 competitions, more competitions than 95% 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 | |
|---|---|---|---|---|---|
| Square-1 | 7.14 | 11.62 | top 2.0% | 9 / 383 | |
| 3×3 | 7.94 | 9.28 | top 2.7% | 178 / 4,390 | |
| 4×4 | 35.33 | 38.60 | top 7.1% | 149 / 1,316 | |
| 5×5 | 1:06.32 | 1:18.00 | top 9.3% | 100 / 725 | |
| 3×3 one-handed | 17.98 | 21.52 | top 15.1% | 219 / 981 | |
| Clock | 8.03 | 9.94 | top 15.2% | 105 / 541 | |
| 6×6 | 2:18.97 | 2:26.10 | top 20.1% | 92 / 335 | |
| 2×2 | 3.83 | 4.41 | top 24.4% | 744 / 2,334 | |
| 3×3 blindfolded | 1:51.35 | 2:30.30 | top 30.4% | 81 / 222 | |
| 7×7 | 4:02.69 | 4:07.81 | early days — 3 solves | 113 / 256 |
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 2026Three personal bests in one day at Okay Okcheon 2026.
- 15 Jun 2024First sub-10 3×3: 9.04 at Prime Cubing Day Seoul 2024.
- 7 May 2023First sub-15 3×3: 10.59 at Seoul Spring 2023.
- 23 Jul 2022First competition: Seoul Summer 2022. A 18.00 3×3 single to start from.
Competitions
- Okay Okcheon 2026 · 17 Oct 2026 — 3 personal bests set
- Uhseo Osong 2026 · 13 Jun 2026
- Korean Championship 2025 · 27 Dec 2025
- Uhseo Osong 2025 · 15 Nov 2025 — 1 personal best set
- Okcheon Autumn Breeze 2025 · 18 Oct 2025 — 1 personal best set
- Daejeon Spring 2025 · 25 May 2025
- Seoul Winter 2024 · 14 Dec 2024 — 1 personal best set
- Korean Championship 2024 · 15 Aug 2024
- Prime Cubing Day Seoul 2024 · 15 Jun 2024 — 2 personal bests set
- Korean Championship 2023 · 15 Dec 2023
- Hamchang Open 2023 · 18 Nov 2023 — 1 personal best set
- Seoul Spring 2023 · 7 May 2023 — 2 personal bests set
- Daegu Hot Spring 2023 · 15 Apr 2023
- Seoul Summer 2022 · 23 Jul 2022
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.
- Ko Youngjin (고영진) — met in 39 rounds, finished ahead 14 times
- DongSoo Park (박동수) — met in 38 rounds, finished ahead once
- Choi Goho (최고호) — met in 36 rounds, finished ahead 29 times
Next targets
- A sub-6 Square-1 single — 210 people have one; it is 1.14 away.
- A sub-6 3×3 single — 1,419 people have one; it is 1.94 away.
Targets move as he improves.