People · Japan
Kosuke Watarai (渡會康介)
Pyraminx · top 11.0% of 129,321 all-time · competing since November 2014 · 2014WATA03
Kosuke Watarai (渡會康介) has been competing for 12 years. His best event is the Pyraminx: a personal-best single of 4.64, set at Tokyo Pyraminx Returns 2018, puts him in the top 11.0% of the 129,321 people who have ever been ranked in the event, and 131st in Japan. Across 16 competitions since November 2014, he has put 246 official solves on the record across seven events. Solve to solve, his 3×3 times vary about 15% around a typical one; 81% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 17.43 in November 2014 to 13.11, a 25% improvement. Kosuke has entered 16 competitions, more competitions than 96% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Japan | |
|---|---|---|---|---|---|
| Pyraminx | 4.64 | 7.37 | top 11.0% | 131 / 688 | |
| Megaminx | 1:10.80 | 1:16.50 | top 16.1% | 108 / 313 | |
| 3×3 | 13.11 | 15.70 | top 17.8% | 750 / 3,329 | |
| 4×4 | 50.06 | 1:03.24 | top 24.8% | 256 / 667 | |
| 2×2 | 5.90 | 6.75 | top 49.8% | 615 / 1,021 | |
| 5×5 | 2:16.68 | 2:25.32 | top 59.1% | 304 / 420 | |
| 3×3 blindfolded | 7:54.72 | — | early days — 1 solve | 278 / 282 |
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
- 25 Jul 2015First sub-15 3×3: 13.27 at JRCA Kansai Summer 2015.
- 25 Jul 2015Three personal bests in one day at JRCA Kansai Summer 2015.
- 30 Nov 2014First competition: JRCA Kansai Fall 2014. A 17.43 3×3 single to start from.
Competitions
- Ota Blind Winter 2022 · 18 Dec 2022
- Japan Championship 2018 · 22 Dec 2018
- Tokyo Pyraminx Returns 2018 · 22 Sep 2018 — 2 personal bests set
- Japan Open 2017 · 16 Dec 2017
- Suginami Open 2017 · 29 Oct 2017 — 2 personal bests set
- Yokohama 2017 · 17 Sep 2017
- JRCA Kansai Fall 2016 · 25 Sep 2016 — 2 personal bests set
- Kanto Summer 2016 · 24 Jul 2016
- Kawasaki Spring 2016 · 8 May 2016 — 1 personal best set
- Kanto Spring 2016 · 27 Mar 2016 — 1 personal best set
- UT Open 2015 · 23 Nov 2015 — 1 personal best set
- JRCA Kansai Summer 2015 · 25 Jul 2015 — 3 personal bests set
- JRCA Kansai Spring 2015 · 30 May 2015 — 2 personal bests set
- Kansai Open 2015 · 28 Mar 2015 — 2 personal bests set
- JRCA Kansai Winter 2015 · 15 Feb 2015
- JRCA Kansai Fall 2014 · 30 Nov 2014
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.
- Yuhei Takagi (高木佑平) — met in 31 rounds, finished ahead once
- Yuuki Kobayashi (古林祐輝) — met in 27 rounds, finished ahead once
- Kengo Yamawaki (山脇憲吾) — met in 26 rounds, finished ahead 14 times
Next targets
- A sub-4 Pyraminx single — 9,892 people have one; it is 0.64 away.
- A sub-1:00 Megaminx single — 3,483 people have one; it is 10.80 away.
Targets move as he improves.