People · Japan
Yuma Yamaki (八巻悠真)
3×3 · top 2.6% of 284,439 all-time · competing since May 2025 · 2025YAMA03
Yuma Yamaki (八巻悠真) has been competing for a year. His best event is the 3×3: a personal-best single of 7.89, set at Ota Winter 2026, puts him in the top 2.6% of the 284,439 people who have ever been ranked in the event, and 107th in Japan. Until July 2008, no official 3×3 solve in the world had been that fast. Across 5 competitions since May 2025, he has put 65 official solves on the record across five events. Solve to solve, his 3×3 times vary about 15% around a typical one, an early reading from 5 counted rounds. His 3×3 best has come down from 11.30 in May 2025 to 7.89, a 30% improvement. Yuma has entered five competitions, more competitions than 83% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Japan | |
|---|---|---|---|---|---|
| 3×3 | 7.89 | 12.37 | top 2.6% | 107 / 3,329 | |
| Pyraminx | 4.89 | 7.61 | top 12.5% | 153 / 688 | |
| 2×2 | 3.64 | 4.78 | top 21.9% | 275 / 1,021 | |
| 3×3 one-handed | 21.61 | 27.19 | top 24.9% | 202 / 529 | |
| Clock | 12.08 | 13.95 | top 35.3% | 127 / 263 |
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
- 21 Jul 2025First sub-10 3×3: 9.98 at Tokyo Summer 2025.
- 31 May 2025First competition: Kanto Spring 2025. A 11.30 3×3 single to start from.
Competitions
- Ota Winter 2026 · 25 Jan 2026 — 1 personal best set
- Tokyo Winter 2025 · 7 Dec 2025 — 1 personal best set
- Kanto Summer AM 2025 · 30 Aug 2025
- Tokyo Summer 2025 · 21 Jul 2025 — 2 personal bests 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.
- Takumi Tamura (田村匠) — met in 13 rounds, finished ahead 9 times
- Takumi Kato (加藤匠) — met in 13 rounds, finished ahead once
- Takuma Shirahase (白波瀬拓磨) — met in 11 rounds, finished ahead 8 times
Next targets
- A sub-6 3×3 single — 1,376 people have one; it is 1.89 away.
- A sub-4 Pyraminx single — 9,892 people have one; it is 0.89 away.
Targets move as he improves.