People · Japan
Kenta Kobayashi (小林謙太)
4×4 · top 3.8% of 83,917 all-time · competing since March 2025 · 2025KOBA02
Kenta Kobayashi (小林謙太) has been competing for a year. His best event is the 4×4: a personal-best single of 31.53, set at Tokyo Summer 2025, puts him in the top 3.8% of the 83,917 people who have ever been ranked in the event, and 51st in Japan. Until May 2011, no official 4×4 solve in the world had been that fast. Across 9 competitions since March 2025, he has put 93 official solves on the record across six events. His 5×5 best has come down from 1:06.14 in August 2025 to 57.55, a 13% improvement. Kenta 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 | |
|---|---|---|---|---|---|
| 4×4 | 31.53 | 39.86 | top 3.8% | 51 / 667 | |
| 5×5 | 57.55 | 1:08.09 | top 4.3% | 33 / 420 | |
| 6×6 | 1:48.40 | 1:58.07 | top 6.6% | 19 / 209 | |
| 7×7 | 2:54.04 | 3:02.67 | top 8.9% | 24 / 188 | |
| 3×3 | 11.50 | 12.66 | top 12.2% | 523 / 3,329 | |
| Square-1 | 28.05 | 32.54 | top 45.7% | 144 / 245 |
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, 5×5. Faster is higher — the axis is the right way up.
The story so far
- 14 Dec 2025Three personal bests in one day at Tokai Big Cubes 2025.
- 20 Mar 2025First competition: Ota Spring 2025.
Competitions
- Japan Championship 2026 · 18 Jul 2026 — 2 personal bests set
- Tokyo Summer 2026 · 13 Jun 2026
- Tokai Big Cubes 2025 · 14 Dec 2025 — 3 personal bests set
- Tokyo Autumn 2025 · 23 Sep 2025 — 2 personal bests set
- Kanto Summer PM 2025 · 30 Aug 2025
- Kansai Parity Party 2025 · 24 Aug 2025
- Tokyo Summer 2025 · 21 Jul 2025 — 1 personal best set
- Tokai Spring 2025 · 12 Apr 2025
- Ota Spring 2025 · 20 Mar 2025
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.
- Tomohiro Kobayashi (小林知広) — met in 24 rounds, never finished ahead
- Takayuki Tanaka (田中隆喜) — met in 23 rounds, finished ahead 12 times
- Takumi Kawazoe (川添匠) — met in 23 rounds, finished ahead once
Next targets
- A sub-30 4×4 single — 2,388 people have one; it is 1.53 away.
- A sub-50 5×5 single — 713 people have one; it is 7.55 away.
Targets move as he improves.