People · Japan
Kazuki Sakamoto (坂本一樹)
2×2 · top 1.4% of 186,767 all-time · competing since July 2017 · 2017SAKA03
Kazuki Sakamoto (坂本一樹) has been competing for 9 years. His best event is the 2×2: a personal-best single of 1.32, set at Japan Championship 2019, puts him in the top 1.4% of the 186,767 people who have ever been ranked in the event, and 13th in Japan. Until November 2008, no official 2×2 solve in the world had been that fast. Across 15 competitions since July 2017, he has put 521 official solves on the record across twelve events. Solve to solve, his 3×3 times vary about 10% around a typical one, steadier than 97% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 11.99 in July 2017 to 7.97, a 34% improvement. Kazuki has entered 15 competitions, more competitions than 95% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Japan | |
|---|---|---|---|---|---|
| 2×2 | 1.32 | 2.28 | top 1.4% | 13 / 1,021 | |
| 4×4 | 29.76 | 32.63 | top 2.7% | 33 / 667 | |
| 3×3 | 7.97 | 9.36 | top 2.7% | 117 / 3,329 | |
| 5×5 | 55.35 | 1:00.98 | top 3.5% | 28 / 420 | |
| 7×7 | 2:34.99 | 2:41.71 | top 4.6% | 12 / 188 | |
| Pyraminx | 3.73 | 5.23 | top 6.4% | 82 / 688 | |
| 6×6 | 1:48.35 | 1:56.00 | top 6.5% | 18 / 209 | |
| Megaminx | 53.23 | 1:01.13 | top 6.6% | 49 / 313 | |
| 3×3 one-handed | 21.03 | 25.32 | top 23.3% | 187 / 529 | |
| Square-1 | 20.43 | 26.65 | top 28.9% | 99 / 245 | |
| Skewb | 7.65 | 8.41 | top 38.7% | 189 / 338 | |
| 4×4 blindfolded | 16:01.00 | — | early days — 1 solve | 62 / 81 |
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 Dec 2019Three personal bests in one day at Hiroshima Open 2019.
- 2 Nov 2019Five personal bests in one day at Japan Championship 2019.
- 21 Sep 2019Three personal bests in one day at Ayase Autumn 2019.
- 10 Aug 2019Three personal bests in one day at Cube Camp in Kanazawa 2019.
- 20 Jul 2019Four personal bests in one day at Nishinomiya Open 2019.
- 20 Apr 2019Six personal bests in one day at Kansai Open 2019.
Competitions
- Tokyo Autumn 2025 · 23 Sep 2025
- Katano Milky Way 2024 · 7 Jul 2024
- Tokai Winter AM 2021 · 11 Dec 2021
- Hiroshima Open 2019 · 28 Dec 2019 — 3 personal bests set
- Kansai Big Cubes 2019 · 23 Nov 2019
- Japan Championship 2019 · 2 Nov 2019 — 5 personal bests set
- Kyoto Open 2019 · 20 Oct 2019 — 1 personal best set
- Ayase Autumn 2019 · 21 Sep 2019 — 3 personal bests set
- Kansai Summer 2019 · 1 Sep 2019 — 1 personal best set
- Cube Camp in Kanazawa 2019 · 10 Aug 2019 — 3 personal bests set
- Nishinomiya Open 2019 · 20 Jul 2019 — 4 personal bests set
- Kansai Open 2019 · 20 Apr 2019 — 6 personal bests set
- Kansai Open 2018 · 31 Mar 2018 — 5 personal bests set
- Kansai Big Cube 2017 · 25 Nov 2017 — 3 personal bests set
- Kansai Summer 2017 · 16 Jul 2017 — 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.
- Makoto Takaoka (高岡誠) — met in 66 rounds, finished ahead 4 times
- Takayuki Tanaka (田中隆喜) — met in 61 rounds, finished ahead 49 times
- Tomohiro Kobayashi (小林知広) — met in 60 rounds, finished ahead 29 times
Next targets
- A sub-1 2×2 single — 1,032 people have one; it is 0.32 away.
- A sub-25 4×4 single — 588 people have one; it is 4.76 away.
Targets move as he improves.