People · Japan
Takumi Hamaguchi (濱口巧海)
2×2 · top 6.5% of 186,767 all-time · competing since July 2018 · 2018HAMA04
Takumi Hamaguchi (濱口巧海) has been competing for 8 years. His best event is the 2×2: a personal-best single of 2.23, set at Dunkirk Spring A 2022, puts him in the top 6.5% of the 186,767 people who have ever been ranked in the event, and 84th in Japan. Until February 2008, no official 2×2 solve in the world had been that fast. Across 19 competitions since July 2018, he has put 230 official solves on the record across four events. Solve to solve, his 3×3 times vary about 14% around a typical one; 71% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 45.30 in July 2018 to 10.72, a 76% improvement. Takumi has entered 19 competitions, more competitions than 97% 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 | 2.23 | 4.02 | top 6.5% | 84 / 1,021 | |
| 3×3 | 10.72 | 12.42 | top 9.6% | 423 / 3,329 | |
| Pyraminx | 5.31 | 7.96 | top 15.1% | 178 / 688 | |
| 4×4 | 1:06.22 | 1:19.92 | top 43.1% | 403 / 667 |
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 Aug 2022Three personal bests in one day at Yoga Summer B 2022.
- 7 May 2022First sub-15 3×3: 13.99 at Princeton Spring 2022.
- 7 May 2022Three personal bests in one day at Princeton Spring 2022.
- 14 Sep 2019First sub-20 3×3: 19.50 at Slow N Steady Summer 2019.
- 13 Apr 2019First sub-30 3×3: 22.73 at MLWGS Spring 2019.
- 21 Jul 2018First competition: Fredericksburg Summer Open 2018. A 45.30 3×3 single to start from.
Competitions
- Shonan AM 2024 · 7 Dec 2024 — 1 personal best set
- Yoga Summer B 2022 · 28 Aug 2022 — 3 personal bests set
- Owings Mills Summer 2022 · 16 Jul 2022
- Rubik's WCA North American Championship 2022 · 7 Jul 2022 — 1 personal best set
- Pennsylvania Championship 2022 · 17 Jun 2022 — 1 personal best set
- Dunkirk Spring A 2022 · 11 Jun 2022 — 1 personal best set
- River Hill Spring 2022 · 14 May 2022 — 1 personal best set
- Princeton Spring 2022 · 7 May 2022 — 3 personal bests set
- Slow N Steady Spring 2022 · 2 Apr 2022 — 1 personal best set
- Potomac Speedcubing 2020 · 11 Jan 2020
- TJHSST Fall 2019 · 9 Nov 2019
- Slow N Steady Summer 2019 · 14 Sep 2019 — 1 personal best set
- CubingUSA Nationals 2019 · 1 Aug 2019 — 1 personal best set
- Pittsburgh Summer 2019 · 15 Jun 2019 — 1 personal best set
- MLWGS Spring 2019 · 13 Apr 2019 — 2 personal bests set
- CubingUSA Northeast Championship 2019 · 16 Feb 2019 — 1 personal best set
- TJHSST Fall 2018 · 3 Nov 2018
- Slow N Steady Summer 2018 · 2 Sep 2018 — 1 personal best set
- Fredericksburg Summer Open 2018 · 21 Jul 2018
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.
- Hiromi Hamaguchi (濱口弘海) — met in 35 rounds, finished ahead 16 times
- Robert Mapp IV — met in 26 rounds, finished ahead twice
- Waden Cho — met in 26 rounds, finished ahead once
Next targets
- A sub-2 2×2 single — 8,848 people have one; it is 0.23 away.
- A sub-10 3×3 single — 21,172 people have one; it is 0.72 away.
Targets move as he improves.