People · Japan
Harenosuke Eguchi (江口晴之丞)
Pyraminx · top 2.5% of 130,891 all-time · competing since May 2025 · 2025EGUC01
Harenosuke Eguchi (江口晴之丞) has been competing for a year. His best event is the Pyraminx: a personal-best single of 2.61, set at Kanto Spring 2026, puts him in the top 2.5% of the 130,891 people who have ever been ranked in the event, and 37th in Japan. Until January 2011, no official Pyraminx solve in the world had been that fast. Across 13 competitions since May 2025, he has put 178 official solves on the record across ten events. Solve to solve, his 3×3 times vary about 13% around a typical one; 51% of the 36,406 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 13.74 in May 2025 to 9.50, a 31% improvement. Harenosuke has entered 13 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 | Japan | |
|---|---|---|---|---|---|
| Pyraminx | 2.61 | 6.98 | top 2.5% | 37 / 691 | |
| 3×3 | 9.50 | 11.21 | top 6.1% | 262 / 3,360 | |
| 2×2 | 2.39 | 3.57 | top 7.9% | 105 / 1,026 | |
| 4×4 | 39.98 | 51.58 | top 12.2% | 126 / 679 | |
| Clock | 8.25 | 9.97 | top 16.3% | 61 / 268 | |
| 3×3 one-handed | 21.08 | 24.30 | top 23.5% | 192 / 539 | |
| Megaminx | 1:44.24 | 2:13.72 | top 37.3% | 187 / 313 | |
| Square-1 | 27.60 | 30.06 | top 44.8% | 146 / 251 | |
| 5×5 | 2:47.73 | 2:53.64 | top 73.8% | 364 / 426 | |
| 3×3 Fewest Moves | 51 moves | — | early days — 1 solve | 185 / 205 |
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
- 5 Apr 2026First sub-10 3×3: 9.91 at Tokyo Spring 2026.
- 7 Dec 2025Three personal bests in one day at Tokyo Winter 2025.
- 31 May 2025First competition: Kanto Spring 2025. A 13.74 3×3 single to start from.
Competitions
- Tokyo Autumn 2026 · 17 Oct 2026 — 1 personal best set
- Kanto Summer 2026 · 29 Aug 2026
- Tokyo Summer 2026 · 13 Jun 2026 — 1 personal best set
- Kanto Spring 2026 · 17 May 2026 — 2 personal bests set
- Tokyo Spring 2026 · 5 Apr 2026 — 2 personal bests set
- Kanto Winter 2026 · 21 Feb 2026 — 1 personal best set
- Ota Winter 2026 · 25 Jan 2026 — 1 personal best set
- Tokyo Winter 2025 · 7 Dec 2025 — 3 personal bests set
- Ota Autumn 2025 · 8 Nov 2025 — 2 personal bests set
- Kanto Autumn AM 2025 · 11 Oct 2025 — 1 personal best set
- Kanto Summer AM 2025 · 30 Aug 2025
- Tokyo Summer 2025 · 21 Jul 2025 — 1 personal best set
- Kanto Spring 2025 · 31 May 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.
- Hajime Miyazaki (宮崎朔) — met in 33 rounds, finished ahead twice
- Takumi Kato (加藤匠) — met in 33 rounds, finished ahead twice
- Takumi Kawazoe (川添匠) — met in 32 rounds, finished ahead twice
Next targets
- A sub-2 Pyraminx single — 1,497 people have one; it is 0.61 away.
- A sub-8 3×3 single — 8,101 people have one; it is 1.50 away.
Targets move as he improves.