People · Republic of Korea
Sion Choi
Pyraminx · top 16.3% of 129,321 all-time · competing since June 2024 · 2024CHOI22
Sion Choi has been competing for 2 years. His best event is the Pyraminx: a personal-best single of 5.48, set at Korea Open 2026, puts him in the top 16.3% of the 129,321 people who have ever been ranked in the event, and 252nd in Republic of Korea. Across 12 competitions since June 2024, he has put 244 official solves on the record across ten events. Solve to solve, his 3×3 times vary about 10% around a typical one, steadier than 98% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 34.90 in June 2024 to 15.78, a 55% improvement. Sion has entered twelve competitions, more competitions than 94% 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 | 5.48 | 8.19 | top 16.3% | 252 / 1,271 | |
| 3×3 | 15.78 | 17.79 | top 27.1% | 1,454 / 4,352 | |
| Megaminx | 1:32.31 | 1:50.57 | top 29.7% | 192 / 524 | |
| 3×3 one-handed | 25.36 | 36.21 | top 35.2% | 447 / 966 | |
| Skewb | 7.26 | 9.91 | top 35.7% | 366 / 854 | |
| 2×2 | 4.72 | 5.54 | top 35.8% | 1,056 / 2,319 | |
| 4×4 | 1:04.43 | 1:11.82 | top 41.1% | 699 / 1,308 | |
| Clock | 13.92 | 14.78 | top 43.5% | 297 / 536 | |
| 5×5 | 2:07.09 | 2:16.92 | top 53.7% | 441 / 716 | |
| 6×6 | 5:31.84 | — | early days — 1 solve | 300 / 329 |
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 2026Eight personal bests in one day at Korea Open 2026.
- 26 Apr 2026Four personal bests in one day at Anyang Haseyo 2026.
- 21 Feb 2026Four personal bests in one day at Cube Camp in Jeju 2026.
- 15 Aug 2025First sub-20 3×3: 19.95 at Korea Open 2025.
- 20 Jul 2024First sub-30 3×3: 26.20 at Ansan Summer 2024.
- 15 Jun 2024First competition: Prime Cubing Day Seoul 2024. A 34.90 3×3 single to start from.
Competitions
- Korea Open 2026 · 15 Aug 2026 — 8 personal bests set
- Anyang Haseyo 2026 · 26 Apr 2026 — 4 personal bests set
- Cube Camp in Jeju 2026 · 21 Feb 2026 — 4 personal bests set
- Korea Open 2025 · 15 Aug 2025 — 2 personal bests set
- Osan Summer 2025 · 29 Jun 2025
- Korea Newcomers AM 2025 · 8 Mar 2025 — 2 personal bests set
- Happy Suseong 2025 · 18 Jan 2025
- Rubik's WCA Asian Championship 2024 · 1 Nov 2024 — 2 personal bests set
- Daegu Autumn 2024 · 26 Oct 2024 — 2 personal bests set
- Korean Championship 2024 · 15 Aug 2024 — 1 personal best set
- Ansan Summer 2024 · 20 Jul 2024 — 1 personal best set
- Prime Cubing Day Seoul 2024 · 15 Jun 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.
- Ko Youngjin (고영진) — met in 54 rounds, finished ahead once
- Choi Goho (최고호) — met in 53 rounds, finished ahead 3 times
- Hyunjo Kim (김현조) — met in 49 rounds, finished ahead 35 times
Next targets
- A sub-5 Pyraminx single — 17,019 people have one; it is 0.48 away.
- A sub-15 3×3 single — 69,493 people have one; it is 0.78 away.
Targets move as he improves.