People · Japan
Tsumugu Isono (五十野紡久)
3×3 · top 13.8% of 284,439 all-time · competing since February 2024 · 2024ISON02
Tsumugu Isono (五十野紡久) has been competing for 3 years. His best event is the 3×3: a personal-best single of 11.98, set at Kansai Odd and BLD 2025, puts him in the top 13.8% of the 284,439 people who have ever been ranked in the event, and 586th in Japan. Across 6 competitions since February 2024, he has put 43 official solves on the record across two events. Solve to solve, his 3×3 times vary about 14% around a typical one, an early reading from 8 counted rounds. His 3×3 best has come down from 19.41 in February 2024 to 11.98, a 38% improvement. Tsumugu 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 | Japan | |
|---|---|---|---|---|---|
| 3×3 | 11.98 | 16.15 | top 13.8% | 586 / 3,329 | |
| 2×2 | 5.98 | — | early days — 3 solves | 624 / 1,021 |
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
- 12 Apr 2025First sub-15 3×3: 14.68 at Tokai Spring 2025.
- 10 Feb 2024First competition: Hiroshima Winter 2024. A 19.41 3×3 single to start from.
Competitions
- Katano Summer 2025 · 15 Sep 2025
- Kansai Odd and BLD 2025 · 15 Jun 2025 — 2 personal bests set
- Tokai Spring 2025 · 12 Apr 2025 — 1 personal best set
- Tokai Open PM 2024 · 15 Sep 2024 — 1 personal best set
- Katano Milky Way 2024 · 7 Jul 2024
- Hiroshima Winter 2024 · 10 Feb 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.
- Akatsuki Kitamura (北村曉) — met in 9 rounds, finished ahead 6 times
- Noriyuki Okada (岡田典之) — met in 9 rounds, never finished ahead
- Takayuki Tanaka (田中隆喜) — met in 9 rounds, never finished ahead
Next targets
- A sub-10 3×3 single — 21,172 people have one; it is 1.98 away.
- A sub-5 2×2 single — 73,413 people have one; it is 0.98 away.
Targets move as he improves.