People · Vietnam
Bùi Hải Long
Megaminx · top 3.6% of 35,351 all-time · competing since January 2020 · 2020LONG01
Bùi Hải Long has been competing for 7 years. His best event is the Megaminx: a personal-best single of 46.37, set at Hanoi Summer 2025, puts him in the top 3.6% of the 35,351 people who have ever been ranked in the event, and 16th in Vietnam. Until April 2011, no official Megaminx solve in the world had been that fast. Across 15 competitions since January 2020, he has put 463 official solves on the record across 13 events. Solve to solve, his 3×3 times vary about 11% around a typical one, an early reading from 9 counted rounds. His 4×4 best has come down from 1:16.53 in January 2020 to 31.70, a 59% improvement. He has entered 15 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 | Vietnam | |
|---|---|---|---|---|---|
| Megaminx | 46.37 | 50.61 | top 3.6% | 16 / 253 | |
| 4×4 | 31.70 | 34.34 | top 4.0% | 69 / 1,071 | |
| 3×3 Fewest Moves | 24 moves | 26.00 | top 4.1% | 3 / 73 | |
| Square-1 | 8.86 | 11.16 | top 4.3% | 9 / 163 | |
| 5×5 | 57.39 | 1:04.50 | top 4.3% | 33 / 542 | |
| 6×6 | 1:42.12 | 1:50.74 | top 4.6% | 13 / 180 | |
| 3×3 | 9.25 | 10.69 | top 5.5% | 348 / 2,920 | |
| 7×7 | 2:43.41 | 2:50.43 | top 6.4% | 15 / 140 | |
| Pyraminx | 5.06 | 7.47 | top 13.5% | 108 / 752 | |
| Clock | 8.61 | 9.72 | top 17.9% | 55 / 204 | |
| 2×2 | 3.39 | 4.06 | top 18.9% | 401 / 1,718 | |
| 3×3 one-handed | 20.75 | 23.19 | top 22.6% | 336 / 945 | |
| Skewb | 10.08 | 13.60 | top 55.5% | 330 / 534 |
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, 4×4. Faster is higher — the axis is the right way up.
The story so far
- 20 Sep 2025Eight personal bests in one day at Hanoi Summer 2025.
- 26 Apr 2025Five personal bests in one day at NxN in Hanoi 2025.
- 19 Jul 2024Six personal bests in one day at Vietnam Championship 2024.
- 27 Jan 2024First sub-10 3×3: 9.97 at NxN in Hanoi 2024.
- 27 Jan 2024Three personal bests in one day at NxN in Hanoi 2024.
- 22 Jul 2023First sub-15 3×3: 11.11 at Hanoi Summer 2023.
Competitions
- Hanoi Big Cubes 2026 · 27 Sep 2026 — 1 personal best set
- Vietnam FMC Championship 2026 · 26 Sep 2026 — 2 personal bests set
- Vietnam Championship 2026 · 14 Aug 2026 — 2 personal bests set
- MYHM HaNxNoi 2026 · 21 Mar 2026 — 1 personal best set
- Hanoi Summer 2025 · 20 Sep 2025 — 8 personal bests set
- NxN in Hanoi 2025 · 26 Apr 2025 — 5 personal bests set
- Hanoi Winter 2024 · 14 Dec 2024 — 1 personal best set
- Vietnam Championship 2024 · 19 Jul 2024 — 6 personal bests set
- Aeon Mall Long Bien 2024 · 25 May 2024 — 1 personal best set
- Hanoi Side Events 2024 · 24 Mar 2024 — 2 personal bests set
- Don't DNF Hanoi 2024 · 23 Mar 2024 — 2 personal bests set
- NxN in Hanoi 2024 · 27 Jan 2024 — 3 personal bests set
- Hanoi Summer 2023 · 22 Jul 2023 — 7 personal bests set
- Hanoi Super Brain Zyo 2023 · 25 Feb 2023 — 3 personal bests set
- Ha Noi Cube Day 2020 · 5 Jan 2020
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.
- Nông Quốc Duy — met in 82 rounds, finished ahead 33 times
- Đặng Trần Diễn — met in 81 rounds, finished ahead 15 times
- Đỗ Quang Hưng — met in 78 rounds, finished ahead 3 times
Next targets
- A sub-40 Megaminx single — 567 people have one; it is 6.37 away.
- A sub-30 4×4 single — 2,465 people have one; it is 1.70 away.
Targets move as he improves.