People · United States
William Kamiyama
3×3 blindfolded · top 2.4% of 12,334 all-time · competing since April 2018 · 2018KAMI02
William Kamiyama has been competing for 8 years. His best event is the 3×3 blindfolded: a personal-best single of 23.00, set at Davis Big Summer 2026, puts him in the top 2.4% of the 12,334 people who have ever been ranked in the event, and 47th in the United States. Until November 2014, no official 3×3 blindfolded solve in the world had been that fast. Across 15 competitions since April 2018, he has put 158 official solves on the record across seven events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 73% of the 36,406 competitors with ten or more counted rounds. His 3×3 best has come down from 18.05 in April 2018 to 8.07, a 55% improvement. William has entered 15 competitions, more competitions than 95% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | United States | |
|---|---|---|---|---|---|
| 3×3 blindfolded | 23.00 | — | top 2.4% | 47 / 2,128 | |
| 3×3 | 8.07 | 11.18 | top 2.9% | 1,704 / 60,666 | |
| 3×3 one-handed | 19.81 | 23.78 | top 20.1% | 2,603 / 15,900 | |
| Pyraminx | 6.76 | 12.53 | top 25.9% | 7,206 / 29,168 | |
| 2×2 | 4.00 | 5.74 | top 26.5% | 10,635 / 41,674 | |
| Square-1 | 24.27 | 29.43 | top 37.4% | 2,470 / 6,846 | |
| Skewb | 8.47 | 11.55 | top 44.9% | 8,017 / 19,164 |
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
- 24 Oct 2025First sub-10 3×3: 9.32 at Berkeley October Weekday 2025.
- 19 Sep 2025First sub-15 3×3: 11.20 at Berkeley September Weekday 2025.
- 21 Apr 2018First competition: Nipomo Spring 2018. A 18.05 3×3 single to start from.
Competitions
- Berkeley Fall 2026 · 11 Oct 2026 — 1 personal best set
- Bay Area Speedcubin' 69 2026 · 29 Aug 2026
- Davis Big Summer 2026 · 8 Aug 2026 — 1 personal best set
- West Coast Cubing Western Championship 2026 · 23 May 2026 — 2 personal bests set
- Berkeley Spring 2026 · 26 Apr 2026 — 2 personal bests set
- Berkeley Pre-Cal Day 2026 · 17 Apr 2026 — 2 personal bests set
- Berkeley Favorites 2026 · 1 Mar 2026 — 1 personal best set
- Berkeley February Weekday 2026 · 6 Feb 2026
- Berkeley January Weekday 2026 · 22 Jan 2026
- Berkeley December Weekday 2025 · 2 Dec 2025
- Cool Down Berkeley 2025 · 2 Nov 2025 — 1 personal best set
- Berkeley October Weekday 2025 · 24 Oct 2025 — 1 personal best set
- Berkeley September Weekday 2025 · 19 Sep 2025 — 1 personal best set
- Bolivia Nationals 2018 · 5 Jul 2018
- Nipomo Spring 2018 · 21 Apr 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.
- Ethan Jan — met in 32 rounds, never finished ahead
- Bowen Deng (邓博文) — met in 31 rounds, finished ahead 14 times
- Anto Kam (甘浩東) — met in 30 rounds, never finished ahead
Next targets
- A sub-20 3×3 blindfolded single — 176 people have one; it is 3.00 away.
- A sub-8 3×3 single — 8,101 people have one; it is 0.07 away.
Targets move as he improves.