People · Japan
Yukinobu Tsukioka
3×3 · top 2.6% of 284,439 all-time · competing since March 2025 · 2025TSUK01
Yukinobu Tsukioka has been competing for a year. His best event is the 3×3: a personal-best single of 7.92, set at Kenya Nationals 2025, puts him in the top 2.6% of the 284,439 people who have ever been ranked in the event, and 112th in Japan. Until July 2008, no official 3×3 solve in the world had been that fast. Across 8 competitions since March 2025, he has put 116 official solves on the record across three events. Solve to solve, his 3×3 times vary about 11% around a typical one, steadier than 84% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 12.34 in March 2025 to 7.92, a 36% improvement. Yukinobu has entered eight competitions, more competitions than 90% 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 | 7.92 | 9.01 | top 2.6% | 112 / 3,329 | |
| 3×3 one-handed | 15.79 | 22.09 | top 9.8% | 94 / 529 | |
| 2×2 | 3.45 | 4.34 | top 19.6% | 248 / 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
- 28 Jun 2025First sub-10 3×3: 9.32 at Kenya Legacy Twist 2025.
- 1 Mar 2025First competition: Gigiri Cubing Open PM 2025. A 12.57 3×3 single to start from.
Competitions
- Japan Championship 2026 · 18 Jul 2026
- Nairobi Cubes 2026 · 28 Feb 2026 — 1 personal best set
- Nakuru Speedcubing Camp 2025 · 29 Nov 2025
- Kenya Nationals 2025 · 22 Nov 2025 — 2 personal bests set
- Nakuru Open 2025 · 20 Sep 2025 — 1 personal best set
- Nairobi NxN Cubes 2025 · 23 Aug 2025 — 1 personal best set
- Kenya Legacy Twist 2025 · 28 Jun 2025 — 1 personal best set
- Gigiri Cubing Open PM 2025 · 1 Mar 2025 — 1 personal best set
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.
- Kelvin Githiari Waturi — met in 18 rounds, finished ahead 18 times
- Jason Kipkurui — met in 14 rounds, finished ahead 14 times
- Ethan Kiplimo — met in 14 rounds, finished ahead 14 times
Next targets
- A sub-6 3×3 single — 1,376 people have one; it is 1.92 away.
- A sub-15 3×3 one-handed single — 5,987 people have one; it is 0.79 away.
Targets move as he improves.