People · Japan
Kayo Osawa (大澤佳代)
Pyraminx · top 49.3% of 130,891 all-time · competing since April 2019 · 2019OSAW01
Kayo Osawa (大澤佳代) has been competing for 8 years. Her best event is the Pyraminx: a personal-best single of 9.53, set at Ota Autumn 2025, puts her in the top 49.3% of the 130,891 people who have ever been ranked in the event, and 441st in Japan. Across 7 competitions since April 2019, she has put 49 official solves on the record across five events. Solve to solve, her 3×3 times vary about 14% around a typical one, an early reading from 6 counted rounds. Her 3×3 best has come down from 59.97 in April 2019 to 32.15, a 46% improvement. Kayo has entered seven competitions, more competitions than 88% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Japan | |
|---|---|---|---|---|---|
| Pyraminx | 9.53 | 11.66 | top 49.3% | 441 / 691 | |
| 2×2 | 7.07 | 13.20 | top 61.0% | 719 / 1,026 | |
| Megaminx | 2:38.68 | 3:05.12 | top 65.6% | 270 / 313 | |
| 3×3 | 32.15 | 38.58 | top 66.2% | 2,308 / 3,360 | |
| Skewb | 14.10 | 18.34 | top 75.1% | 324 / 354 |
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 Apr 2019First competition: Tribox Open Spring 2019. A 59.97 3×3 single to start from.
Competitions
- Ota Autumn 2025 · 8 Nov 2025
- Kanto Autumn PM 2025 · 11 Oct 2025
- Tokyo Spring PM 2025 · 20 Apr 2025
- Tokyo Open PM Winter 2025 · 16 Feb 2025 — 1 personal best set
- Tokyo Challenge VIII 2023 · 4 Nov 2023 — 1 personal best set
- Tokyo Challenge Winter C 2023 · 12 Feb 2023 — 1 personal best set
- Tribox Open Spring 2019 · 28 Apr 2019
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 her.
- Shoji Ueda (植田昌司) — met in 7 rounds, finished ahead once
- Fumiki Koseki (古関章記) — met in 7 rounds, never finished ahead
- Zirui Wang (王子睿) — met in 7 rounds, never finished ahead
Next targets
- A sub-8 Pyraminx single — 47,369 people have one; it is 1.53 away.
- A sub-6 2×2 single — 96,384 people have one; it is 1.07 away.
Targets move as she improves.