People · Republic of Korea
SeungJu Baek (백승주)
3×3 · top 2.6% of 284,439 all-time · competing since September 2025 · 2025BAEK05
SeungJu Baek (백승주) has been competing for a year. His best event is the 3×3: a personal-best single of 7.89, set at Korea Open 2026, puts him in the top 2.6% of the 284,439 people who have ever been ranked in the event, and 165th in Republic of Korea. Until July 2008, no official 3×3 solve in the world had been that fast. Across 6 competitions since September 2025, he has put 135 official solves on the record across six events. Solve to solve, his 3×3 times vary about 14% around a typical one, an early reading from 9 counted rounds. His 3×3 best has come down from 17.42 in September 2025 to 7.89, a 55% improvement. SeungJu has entered six competitions, more competitions than 86% 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 | 7.89 | 9.55 | top 2.6% | 165 / 4,352 | |
| 2×2 | 2.56 | 3.04 | top 9.5% | 280 / 2,319 | |
| Pyraminx | 5.14 | 7.75 | top 14.1% | 213 / 1,271 | |
| 3×3 one-handed | 22.61 | 25.39 | top 27.7% | 368 / 966 | |
| Skewb | 6.31 | 8.11 | top 28.2% | 287 / 854 | |
| 4×4 | 1:06.32 | 1:10.58 | top 43.2% | 723 / 1,308 |
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 2026Four personal bests in one day at Korea Open 2026.
- 26 Apr 2026First sub-10 3×3: 8.62 at Anyang Haseyo 2026.
- 17 Jan 2026Three personal bests in one day at Seoul Winter 2026.
- 15 Nov 2025First sub-15 3×3: 14.50 at Uhseo Osong 2025.
- 14 Sep 2025First competition: We Laugh Pohanghang 2025. A 17.42 3×3 single to start from.
Competitions
- Korea Open 2026 · 15 Aug 2026 — 4 personal bests set
- Hamoye Jinju 2026 · 16 May 2026 — 1 personal best set
- Anyang Haseyo 2026 · 26 Apr 2026 — 2 personal bests set
- Seoul Winter 2026 · 17 Jan 2026 — 3 personal bests set
- Uhseo Osong 2025 · 15 Nov 2025 — 1 personal best set
- We Laugh Pohanghang 2025 · 14 Sep 2025
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.
- Kyeongmin Choi (최경민) — met in 28 rounds, never finished ahead
- Ko Youngjin (고영진) — met in 27 rounds, finished ahead 10 times
- Kim Eden (김이든) — met in 27 rounds, finished ahead 5 times
Next targets
- A sub-6 3×3 single — 1,376 people have one; it is 1.89 away.
- A sub-2 2×2 single — 8,848 people have one; it is 0.56 away.
Targets move as he improves.