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People → Japan → Yuuki Kobayashi (古林祐輝)

People · Japan

Yuuki Kobayashi (古林祐輝)

Pyraminx · top 1.3% of 129,321 all-time · competing since June 2009 · 2009KOBA02

Yuuki Kobayashi (古林祐輝) has been competing for 17 years. His best event is the Pyraminx: a personal-best single of 2.09, set at Tokyo Pyraminx Open 2015, puts him in the top 1.3% of the 129,321 people who have ever been ranked in the event, and 17th in Japan. Until July 2011, no official Pyraminx solve in the world had been that fast. Across 90 competitions since June 2009, he has put 2,014 official solves on the record across 14 events. Solve to solve, his 3×3 times vary about 13% around a typical one; 55% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 21.16 in June 2009 to 7.81, a 63% improvement. Yuuki has entered 90 competitions, more competitions than 99% of everyone who has ever competed.

Pyraminx
best event — top 1.3% of 129,321 all-time
2.09
signature single · Tokyo Pyraminx Open 2015
2,014
official solves on the record
13%
solve-to-solve spread · wider than 55% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingJapan
Pyraminx2.095.05
top 1.3%17 / 688
3×37.8110.51
top 2.5%101 / 3,329
4×437.5945.37
top 9.3%92 / 667
2×22.633.90
top 10.2%143 / 1,021
Megaminx1:05.101:13.72
top 12.8%92 / 313
3×3 Fewest Moves30 moves38.00
top 14.8%63 / 201
3×3 one-handed17.9123.91
top 14.8%129 / 529
Skewb4.657.77
top 15.6%79 / 338
5×51:21.381:29.15
top 20.2%122 / 420
Square-116.9420.59
top 20.9%80 / 245
Clock11.9014.85
top 34.4%121 / 263
3×3 blindfolded2:30.08—
top 43.3%170 / 282
6×63:09.853:24.27
top 45.6%115 / 209
7×75:06.325:10.95
top 52.5%109 / 188

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

JRCA Kanto Summer 2009: 21.16Japan Open 2009: 22.71JRCA Kanto Winter 2010: 15.55Japan Open 2010: 12.52Kawasaki Open 2010: 20.40Cube Camp in Kanazawa 2010: 13.75Asian Championship 2012: 12.71Japan Contest 2012: 13.61Cherry Blossom Viewing Open 2013: 15.02Japan Open 2013: 13.86World Rubik's Cube Championship 2013: 14.79Cube Camp in Kanazawa 2013: 12.55East Osaka 2013: 14.21UT Open 2013: 15.46Kyushu Open 2013: 13.15JRCA Kansai Winter 2014: 11.81Kanto Open 2014: 11.46Kansai Open 2014: 10.40Cherry Blossom Viewing 2014: 11.86JRCA Kansai Spring 2014: 13.22Kawasaki Spring 2014: 12.59Cube Camp in Kanazawa 2014: 12.78West Japan Big Cube 2014: 11.84Japan Contest Autumn 2014: 11.44Asian Championship 2014: 11.52UT Open 2014: 11.80JRCA Kansai Fall 2014: 12.03Tachikawa 3x3 Fest 2014: 10.44Kyushu Open 2014: 10.91Tokyo Pyraminx Open 2015: 12.19JRCA Kansai Spring 2015: 10.66Kawasaki Summer 2015: 11.55East Japan Big Cubes 2015: 12.34Cube Camp in Kanazawa 2015: 11.63Tohoku Open 2015: 9.78Japan Open 2015: 9.19JRCA Kansai Fall 2015: 10.02UT Open 2015: 11.81Meguro 3x3 Fest 2015: 10.61JRCA Kansai Winter 2016: 9.56Kansai Open 2016: 10.97Kanto Spring 2016: 9.80Kawasaki Spring 2016: 10.56Kanto Summer 2016: 10.37Japan Open 2016: 9.54Tribox Open Winter 2017: 11.49Circles Open Spring 2017: 10.29Meguro 2017: 10.09Tokyo Pyraminx Open 2017: 9.77Cross-strait Cubing Exchange 2017: 9.50Yokohama 2017: 10.27Suginami Open 2017: 9.69Taiwan Championship 2017: 11.35Japan Open 2017: 11.44TMU Open 2018: 9.56Kobe Open 2018: 10.35Tribox Open Spring 2018: 9.90Omiya Bigs 2018: 10.24Kansai Summer 2018: 10.67Cube Camp in Kanazawa 2018: 10.57WCA Asian Championship 2018: 10.08Tokyo Pyraminx Returns 2018: 10.02Hiroshima 2018: 9.92Saitama 2018: 9.86Hawaii 2018: 10.78Japan Championship 2018: 10.08Ayase 2019: 7.81Tribox Open Spring 2019: 12.33Reiwa Anniversary 2019: 11.64Tokai Open 2019: 9.81Nishinomiya Open 2019: 10.19Kurukuru Summer 2019: 11.91Ayase Autumn 2019: 9.07Kyoto Open 2019: 9.62Japan Championship 2019: 10.84Hiroshima Open 2019: 10.49Ayase 2020: 9.47Tokai Winter PM 2021: 10.74Minatomirai 2022: 8.90Hiroshima Spring 2023: 10.41Ayase Summer 2023: 11.24Rubik's WCA World Championship 2023: 12.23Taiwan Championship 2024: 10.237.8122.7121 Jun 20096 Dec 2024

Best single per competition, 3×3. Faster is higher — the axis is the right way up.

The story so far

Competitions

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.

Next targets

  • A sub-2 Pyraminx single — 1,476 people have one; it is 0.09 away.
  • A sub-6 3×3 single — 1,376 people have one; it is 1.81 away.

Targets move as he improves.