People · Japan
Ryoji Kobayashi (小林龍慈)
3×3 · top 14.4% of 284,439 all-time · competing since April 2025 · 2025KOBA03
Ryoji Kobayashi (小林龍慈) has been competing for a year. His best event is the 3×3: a personal-best single of 12.15, set at Ota Winter 2026, puts him in the top 14.4% of the 284,439 people who have ever been ranked in the event, and 607th in Japan. Across 5 competitions since April 2025, he has put 49 official solves on the record across three events. Solve to solve, his 3×3 times vary about 12% around a typical one, an early reading from 6 counted rounds. His 3×3 best has come down from 17.01 in April 2025 to 12.15, a 29% improvement. Ryoji has entered five competitions, more competitions than 83% 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 | 12.15 | 14.20 | top 14.4% | 607 / 3,329 | |
| 2×2 | 3.04 | 6.92 | top 14.7% | 196 / 1,021 | |
| 3×3 one-handed | 27.11 | 29.94 | top 39.6% | 310 / 529 |
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
- 11 Oct 2025First sub-15 3×3: 13.86 at Kanto Autumn AM 2025.
- 20 Apr 2025First competition: Tokyo Spring PM 2025. A 17.01 3×3 single to start from.
Competitions
- Kanto Summer 2026 · 29 Aug 2026 — 1 personal best set
- Ota Winter 2026 · 25 Jan 2026 — 1 personal best set
- Kanto Autumn AM 2025 · 11 Oct 2025 — 1 personal best set
- Kanto Summer AM 2025 · 30 Aug 2025 — 1 personal best set
- Tokyo Spring PM 2025 · 20 Apr 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.
- Takumi Kato (加藤匠) — met in 10 rounds, never finished ahead
- Masaya Nakamoto (中本誠也) — met in 9 rounds, never finished ahead
- Kota Aruga (有賀晃太) — met in 9 rounds, never finished ahead
Next targets
- A sub-12 3×3 single — 39,535 people have one; it is 0.15 away.
- A sub-3 2×2 single — 26,570 people have one; it is 0.04 away.
Targets move as he improves.