People · Japan
Chika Namikawa (浪川千華)
3×3 · top 31.5% of 284,439 all-time · competing since March 2009 · 2009NAMI01
Chika Namikawa (浪川千華) has been competing for 18 years. Her best event is the 3×3: a personal-best single of 17.16, set at Japan Open 2010, puts her in the top 31.5% of the 284,439 people who have ever been ranked in the event, and 1,239th in Japan. Across 29 competitions since March 2009, she has put 262 official solves on the record across four events. Solve to solve, her 3×3 times vary about 16% around a typical one; 91% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. Her 3×3 best has come down from 36.06 in March 2009 to 17.16, a 52% improvement. Chika 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 | Japan | |
|---|---|---|---|---|---|
| 3×3 | 17.16 | 20.13 | top 31.5% | 1,239 / 3,329 | |
| 4×4 | 1:13.61 | 1:23.28 | top 50.3% | 459 / 667 | |
| Pyraminx | 10.56 | 14.84 | top 57.3% | 493 / 688 | |
| Clock | 24.05 | 32.44 | top 74.8% | 238 / 263 |
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
- 27 Mar 2010Three personal bests in one day at Japan Open 2010.
- 1 Aug 2009First sub-20 3×3: 18.40 at Japan Open 2009.
- 30 May 2009First sub-30 3×3: 25.65 at JRCA Kansai Spring 2009.
- 28 Mar 2009First competition: Osaka Open 2009. A 36.06 3×3 single to start from.
Competitions
- Lake-Biwa Open 2013 · 15 Jun 2013
- Kansai Open 2013 · 23 Mar 2013
- West Japan Big Cube 2012 · 24 Nov 2012
- East Osaka 2012 · 27 Oct 2012
- Cube Camp in Kanazawa 2012 · 17 Aug 2012
- Kansai Star Festival 2012 · 7 Jul 2012
- Kyotanabe Open 2012 · 26 May 2012
- Matsudo Spring 2012 · 8 Apr 2012
- Kansai Open 2012 · 24 Mar 2012
- Kansai New Year 2012 · 14 Jan 2012
- Hokuriku Eve 2011 · 24 Dec 2011 — 1 personal best set
- Kyotanabe Open 2011 · 19 Nov 2011
- World Rubik's Cube Championship 2011 · 14 Oct 2011 — 1 personal best set
- Cube Camp in Kanazawa 2011 · 19 Aug 2011 — 1 personal best set
- Japan Open 2011 · 30 Jul 2011 — 1 personal best set
- West Japan Big Cubes 2011 · 21 May 2011
- Osaka 2011 · 26 Mar 2011
- Kansai New Year 2011 · 8 Jan 2011
- Ishikawa Gokoku Shinto Shrine Open 2010 · 4 Dec 2010
- JRCA Kansai Summer 2010 · 18 Sep 2010
- JRCA Kansai Spring 2010 · 29 May 2010 — 1 personal best set
- Japan Open 2010 · 27 Mar 2010 — 3 personal bests set
- JRCA Kanto Winter 2010 · 21 Feb 2010
- Doshisha Open 2009 · 28 Nov 2009
- Toyama Open 2009 · 19 Sep 2009
- Japan Open 2009 · 1 Aug 2009 — 2 personal bests set
- JRCA Kansai Summer 2009 · 18 Jul 2009 — 1 personal best set
- JRCA Kansai Spring 2009 · 30 May 2009 — 1 personal best set
- Osaka Open 2009 · 28 Mar 2009
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.
- Yohei Oka (岡要平) — met in 48 rounds, never finished ahead
- Nobuaki Suga (菅信昭) — met in 47 rounds, finished ahead once
- Sinpei Araki (荒木慎平) — met in 38 rounds, never finished ahead
Next targets
- A sub-15 3×3 single — 69,493 people have one; it is 2.16 away.
- A sub-1:00 4×4 single — 30,601 people have one; it is 13.61 away.
Targets move as she improves.