People · United States
Shari Kuroyama (黒山理科)
3×3 Fewest Moves · top 23.4% of 12,294 all-time · competing since November 2008 · 2008KURO01
Shari Kuroyama (黒山理科) has been competing for 18 years. Her best event is the 3×3 Fewest Moves: a personal-best single of 33 moves, set at US Nationals 2015, puts her in the top 23.4% of the 12,294 people who have ever been ranked in the event, and 507th in the United States. Across 29 competitions since November 2008, she has put 153 official solves on the record across eight events. Solve to solve, her 3×3 times vary about 11% around a typical one, steadier than 82% of the 35,811 competitors with ten or more counted rounds. Her 3×3 best has come down from 30.82 in November 2008 to 17.66, a 43% improvement. Shari has entered 29 competitions, more competitions than 98% 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 Fewest Moves | 33 moves | 39.33 | top 23.4% | 507 / 2,040 | |
| 3×3 | 17.66 | 23.23 | top 33.1% | 18,340 / 59,724 | |
| 2×2 | 4.88 | 8.33 | top 37.8% | 15,127 / 40,951 | |
| Square-1 | 47.18 | 55.32 | top 73.4% | 4,832 / 6,743 | |
| 3×3 one-handed | 47.66 | 1:11.06 | top 74.5% | 10,796 / 15,683 | |
| Pyraminx | 16.05 | 21.57 | top 85.3% | 25,147 / 28,708 | |
| 4×4 | 2:47.72 | — | early days — 2 solves | 18,224 / 19,072 | |
| 3×3 blindfolded | 9:01.93 | — | early days — 1 solve | 2,036 / 2,092 |
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 Aug 2010First sub-20 3×3: 17.66 at Utah Summer 2010.
- 14 Aug 2009First sub-30 3×3: 28.22 at US Nationals 2009.
- 22 Nov 2008First competition: Caltech Fall 2008. A 30.82 3×3 single to start from.
Competitions
- CETis 156 Broncos 2025 · 1 Feb 2025
- Rubik's WCA World Championship 2023 · 12 Aug 2023
- SoCal Silent Spectacular 2022 · 13 Aug 2022
- Rubik's WCA North American Championship 2022 · 7 Jul 2022
- Irvine FMC B 2022 · 4 Jun 2022
- WCA World Championship 2019 · 11 Jul 2019
- Caltech Fall 2015 · 21 Nov 2015
- FMC USA 2015 · 25 Oct 2015
- Nisei Week 2015 · 15 Aug 2015
- US Nationals 2015 · 31 Jul 2015 — 1 personal best set
- San Diego Summer Splash 2015 · 23 May 2015
- FMC USA 2014 · 26 Oct 2014
- San Diego Summer Splash 2014 · 24 May 2014
- Caltech Spring Open 2014 · 17 May 2014 — 2 personal bests set
- Tachikawa 3x3 Fest 2013 · 11 Aug 2013
- Caltech Winter Open 2013 · 23 Feb 2013
- Caltech Winter 2012 · 11 Feb 2012
- Berkeley Winter 2012 · 28 Jan 2012 — 2 personal bests set
- Caltech Fall 2011 · 19 Nov 2011 — 1 personal best set
- Stanford Fall 2011 · 13 Nov 2011
- Caltech Prefrosh 2011 · 16 Apr 2011
- Caltech Winter 2011 · 12 Feb 2011
- Utah Summer 2010 · 28 Aug 2010 — 2 personal bests set
- Nisei Week Open 2010 · 21 Aug 2010 — 1 personal best set
- United States Rubik's Cube Championships 2010 · 6 Aug 2010 — 1 personal best set
- Caltech Fall competition 2009 · 24 Oct 2009
- Nisei Week Open 2009 · 22 Aug 2009 — 1 personal best set
- US Nationals 2009 · 14 Aug 2009 — 1 personal best set
- Caltech Fall 2008 · 22 Nov 2008
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.
- Michael Young — met in 33 rounds, finished ahead once
- Devin Corr-Robinett — met in 20 rounds, never finished ahead
- Steven Turner — met in 16 rounds, finished ahead once
Next targets
- A sub-15 3×3 single — 69,493 people have one; it is 2.66 away.
- A sub-4 2×2 single — 49,452 people have one; it is 0.88 away.
Targets move as she improves.