People · Republic of Korea
Hyoungjoo Ahn (안형주)
2×2 · top 6.8% of 189,179 all-time · competing since June 2024 · 2024AHNH01
Hyoungjoo Ahn (안형주) has been competing for 2 years. His best event is the 2×2: a personal-best single of 2.27, set at Seoul Summer 2026, puts him in the top 6.8% of the 189,179 people who have ever been ranked in the event, and 192nd in Republic of Korea. Until February 2008, no official 2×2 solve in the world had been that fast. Across 14 competitions since June 2024, he has put 305 official solves on the record across eight events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 76% of the 36,406 competitors with ten or more counted rounds. His 3×3 best has come down from 23.98 in June 2024 to 11.21, a 53% improvement. Hyoungjoo 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 | |
|---|---|---|---|---|---|
| 2×2 | 2.27 | 3.21 | top 6.8% | 192 / 2,334 | |
| Pyraminx | 4.03 | 5.21 | top 7.8% | 130 / 1,294 | |
| 3×3 | 11.21 | 12.87 | top 11.2% | 640 / 4,390 | |
| Clock | 7.35 | 9.51 | top 12.3% | 80 / 541 | |
| 4×4 | 47.29 | 52.66 | top 21.3% | 381 / 1,316 | |
| 3×3 one-handed | 20.64 | 29.90 | top 22.3% | 310 / 981 | |
| Skewb | 5.62 | 8.34 | top 22.9% | 239 / 874 | |
| Megaminx | 2:08.95 | 2:12.23 | top 50.8% | 319 / 526 |
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 2025Three personal bests in one day at Korea Open 2025.
- 25 May 2025First sub-15 3×3: 13.39 at Daejeon Spring 2025.
- 25 May 2025Three personal bests in one day at Daejeon Spring 2025.
- 14 Dec 2024First sub-20 3×3: 17.88 at Seoul Winter 2024.
- 15 Jun 2024First competition: Prime Cubing Day Seoul 2024. A 23.98 3×3 single to start from.
Competitions
- Ansan Autumn 2026 · 19 Sep 2026
- Korea Open 2026 · 15 Aug 2026 — 2 personal bests set
- Seoul Summer 2026 · 19 Jul 2026 — 2 personal bests set
- Uhseo Osong 2026 · 13 Jun 2026 — 2 personal bests set
- Seoul Spring 2026 · 22 Mar 2026 — 1 personal best set
- Seoul Winter 2026 · 17 Jan 2026 — 1 personal best set
- Uhseo Osong 2025 · 15 Nov 2025 — 2 personal bests set
- Korea Open 2025 · 15 Aug 2025 — 3 personal bests set
- Daejeon Spring 2025 · 25 May 2025 — 3 personal bests set
- Please Minx Korea 2025 · 5 Apr 2025 — 2 personal bests set
- Happy Suseong 2025 · 18 Jan 2025 — 1 personal best set
- Seoul Winter 2024 · 14 Dec 2024 — 1 personal best set
- Daegu Autumn 2024 · 26 Oct 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 60 rounds, finished ahead 15 times
- Choi Goho (최고호) — met in 59 rounds, finished ahead 22 times
- Kim Eden (김이든) — met in 54 rounds, finished ahead 20 times
Next targets
- A sub-2 2×2 single — 9,039 people have one; it is 0.27 away.
- A sub-4 Pyraminx single — 10,050 people have one; it is 0.03 away.
Targets move as he improves.