People · Japan
Takuya Kurokawa (黒河拓也)
3×3 · top 1.1% of 284,439 all-time · competing since May 2018 · 2018KURO04
Takuya Kurokawa (黒河拓也) has been competing for 8 years. His best event is the 3×3: a personal-best single of 6.78, set at Tokyo Open PM Winter 2025, puts him in the top 1.1% of the 284,439 people who have ever been ranked in the event, and 48th in Japan. Until November 2010, no official 3×3 solve in the world had been that fast. Across 9 competitions since May 2018, he has put 98 official solves on the record across three events. Solve to solve, his 3×3 times vary about 14% around a typical one; 63% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 10.02 in May 2018 to 6.78, a 32% improvement. Takuya has entered nine competitions, more competitions than 91% 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 | 6.78 | 7.58 | top 1.1% | 48 / 3,329 | |
| 3×3 one-handed | 13.07 | 15.09 | top 4.5% | 52 / 529 | |
| 2×2 | 3.48 | 5.12 | top 20.0% | 250 / 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
- 22 Sep 2018First sub-10 3×3: 8.11 at Tokyo Pyraminx Returns 2018.
- 5 May 2018First competition: Tribox Open Spring 2018. A 10.02 3×3 single to start from.
Competitions
- Tokyo Spring PM 2025 · 20 Apr 2025
- Tokyo Open PM Winter 2025 · 16 Feb 2025 — 1 personal best set
- Shonan PM 2024 · 7 Dec 2024 — 2 personal bests set
- Japan Championship 2019 · 2 Nov 2019 — 1 personal best set
- Ayase Autumn 2019 · 21 Sep 2019 — 1 personal best set
- Tribox Open Spring 2019 · 28 Apr 2019
- Tokyo Pyraminx Returns 2018 · 22 Sep 2018 — 1 personal best set
- Omiya Bigs 2018 · 10 Jun 2018
- Tribox Open Spring 2018 · 5 May 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.
- Shuhei Omura (大村周平) — met in 13 rounds, finished ahead 9 times
- Itthikorn Jittaveeroj (อิทธิกร จิตทวีโรจน์) — met in 13 rounds, finished ahead 7 times
- Taro Yoshioka (吉岡太郎) — met in 12 rounds, finished ahead 7 times
Next targets
- A sub-6 3×3 single — 1,376 people have one; it is 0.78 away.
- A sub-12 3×3 one-handed single — 2,187 people have one; it is 1.07 away.
Targets move as he improves.