People · Japan
Yudai Naito (内藤悠大)
6×6 · top 0.79% of 17,510 all-time · competing since May 2023 · 2023NAIT01
Yudai Naito (内藤悠大) has been competing for 3 years. His best event is the 6×6: a personal-best single of 1:21.48, set at Tokai Big Cubes 2025, puts him in the top 0.79% of the 17,510 people who have ever been ranked in the event, and 1st in Japan. Until July 2017, no official 6×6 solve in the world had been that fast. Across 7 competitions since May 2023, he has put 145 official solves on the record across seven events. Solve to solve, his 3×3 times vary about 15% around a typical one, an early reading from 7 counted rounds. His 3×3 best has come down from 8.70 in May 2023 to 6.83, a 21% improvement. Yudai has entered seven competitions, more competitions than 88% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Japan | |
|---|---|---|---|---|---|
| 6×6 | 1:21.48 | 1:26.91 | top 0.79% | 1 / 209 | |
| 4×4 | 25.77 | 30.01 | top 0.93% | 14 / 667 | |
| 7×7 | 2:05.74 | 2:14.95 | top 0.98% | 2 / 188 | |
| 5×5 | 46.84 | 53.36 | top 1.0% | 9 / 420 | |
| 3×3 | 6.83 | 8.01 | top 1.1% | 51 / 3,329 | |
| 3×3 one-handed | 11.14 | 17.68 | top 2.0% | 20 / 529 | |
| Megaminx | 55.65 | 58.40 | top 7.7% | 58 / 313 |
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
- 14 Dec 2025Three personal bests in one day at Tokai Big Cubes 2025.
- 25 May 2024Three personal bests in one day at Kanazawa 2024.
- 17 Jul 2023Four personal bests in one day at Ayase Summer 2023.
- 27 May 2023First competition: Kanazawa Challenge Spring PM 2023. A 8.70 3×3 single to start from.
Competitions
- Japan Championship 2026 · 18 Jul 2026 — 2 personal bests set
- Tokai Big Cubes 2025 · 14 Dec 2025 — 3 personal bests set
- Tokyo Autumn 2025 · 23 Sep 2025 — 2 personal bests set
- Ota Spring 2025 · 20 Mar 2025 — 1 personal best set
- Kanazawa 2024 · 25 May 2024 — 3 personal bests set
- Ayase Summer 2023 · 17 Jul 2023 — 4 personal bests set
- Kanazawa Challenge Spring PM 2023 · 27 May 2023
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.
- Tomohiro Kobayashi (小林知広) — met in 30 rounds, finished ahead 19 times
- Kohdai Kusatani (草谷幸大) — met in 29 rounds, finished ahead 17 times
- Takeru Iguchi (井口丈瑠) — met in 27 rounds, finished ahead 16 times
Next targets
- A sub-1:00 6×6 single — 2 people have one; it is 21.48 away.
- A sub-25 4×4 single — 588 people have one; it is 0.77 away.
Targets move as he improves.