People · Japan
Koga Sugiyama (杉山煌河)
3×3 · top 37.5% of 284,439 all-time · competing since June 2025 · 2025SUGI03
Koga Sugiyama (杉山煌河) has been competing for a year. His best event is the 3×3: a personal-best single of 19.13, set at Katano Summer 2025, puts him in the top 37.5% of the 284,439 people who have ever been ranked in the event, and 1,424th in Japan. Across 2 competitions since June 2025, he has put 10 official solves on the record across one event. His 3×3 best has come down from 23.31 in June 2025 to 19.13, an 18% improvement. Koga has entered two competitions.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Japan | |
|---|---|---|---|---|---|
| 3×3 | 19.13 | 22.25 | top 37.5% | 1,424 / 3,329 |
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
- 15 Sep 2025First sub-20 3×3: 19.13 at Katano Summer 2025.
- 15 Jun 2025First competition: Kansai Odd and BLD 2025. A 23.31 3×3 single to start from.
Competitions
- Katano Summer 2025 · 15 Sep 2025 — 1 personal best set
- Kansai Odd and BLD 2025 · 15 Jun 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.
Next targets
- A sub-15 3×3 single — 69,493 people have one; it is 4.13 away.
Targets move as he improves.