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People → Japan → Sachio Iwasaki (岩崎幸生)

People · Japan

Sachio Iwasaki (岩崎幸生)

Pyraminx · top 6.1% of 129,321 all-time · competing since August 2009 · 2009IWAS01

Sachio Iwasaki (岩崎幸生) has been competing for 17 years. His best event is the Pyraminx: a personal-best single of 3.66, set at Cube Camp in Kanazawa 2012, puts him in the top 6.1% of the 129,321 people who have ever been ranked in the event, and 80th in Japan. Until February 2008, no official Pyraminx solve in the world had been that fast. Across 26 competitions since August 2009, he has put 679 official solves on the record across 13 events. Solve to solve, his 3×3 times vary about 13% around a typical one; 58% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 25.84 in August 2009 to 9.92, a 62% improvement. Sachio has entered 26 competitions, more competitions than 98% of everyone who has ever competed.

Pyraminx
best event — top 6.1% of 129,321 all-time
3.66
signature single · Cube Camp in Kanazawa 2012
679
official solves on the record
13%
solve-to-solve spread · wider than 58% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingJapan
Pyraminx3.666.46
top 6.1%80 / 688
3×39.9211.52
top 7.2%314 / 3,329
2×22.754.01
top 11.5%153 / 1,021
3×3 one-handed17.2722.17
top 13.3%120 / 529
Clock7.839.22
top 14.4%52 / 263
5×51:18.401:33.40
top 17.9%110 / 420
4×448.3052.47
top 22.5%229 / 667
Square-118.4425.66
top 24.4%92 / 245
Megaminx1:30.311:37.32
top 28.4%157 / 313
6×62:54.333:05.62
top 38.2%96 / 209
7×74:37.474:45.56
top 43.6%96 / 188
3×3 Fewest Moves43 moves—
early days — 2 solves139 / 201
3×3 blindfolded3:32.03—
early days — 2 solves218 / 282

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

Japan Open 2009: 25.84Matsudo Autumn 2011: 12.84UT Open 2011: 13.03Tsukuba 2012: 10.71Matsudo Spring 2012: 13.53Rabbit and Turtle 2012: 11.43Kawasaki Open 2012: 13.06Cube Camp in Kanazawa 2012: 10.53Japan Open 2012: 12.03Rabbit And Turtle 2013: 12.84Kansai Open 2013: 12.53Kawasaki Open 2013: 12.34Kawasaki Autumn 2013: 12.05UT Open 2013: 10.68Hsinchu Spring Open 2014: 9.92Kaohsiung Summer Open 2014: 11.47Melaka Open 2014: 10.86Tokyo Pyraminx Open 2015: 12.69World Rubik's Cube Championship 2015: 11.57UT Open 2015: 11.539.9225.841 Aug 200923 Nov 2015

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-3 Pyraminx single — 4,700 people have one; it is 0.66 away.
  • A sub-8 3×3 single — 7,931 people have one; it is 1.92 away.

Targets move as he improves.