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The Middle Three
People → Japan → Sei Sugama (洲鎌星)

People · Japan

Sei Sugama (洲鎌星)

3×3 · top 0.085% of 284,439 all-time · competing since May 2010 · 2010SUGA01

Sei Sugama (洲鎌星) has been competing for 16 years. His best event is the 3×3: a personal-best single of 4.80, set at Hiroshima Open 2019, puts him in the top 0.085% of the 284,439 people who have ever been ranked in the event, and 2nd in Japan. Until November 2016, no official 3×3 solve in the world had been that fast. Across 57 competitions since May 2010, he has put 2,111 official solves on the record across 17 events. Solve to solve, his 3×3 times vary about 13% around a typical one, steadier than 52% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 9.86 in May 2010 to 4.80, a 51% improvement. Sei has entered 57 competitions, more competitions than 99% of everyone who has ever competed.

3×3
best event — top 0.085% of 284,439 all-time
4.80
signature single · Hiroshima Open 2019
2,111
official solves on the record
13%
solve-to-solve spread · steadier than 52% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingJapan
3×34.807.38
top 0.085%2 / 3,329
4×423.5627.94
top 0.42%2 / 667
5×543.3452.43
top 0.47%4 / 420
3×3 one-handed10.6712.86
top 1.5%15 / 529
2×21.542.69
top 2.3%31 / 1,021
7×72:26.302:29.95
top 3.2%7 / 188
6×61:37.741:47.33
top 3.5%11 / 209
Megaminx50.9854.17
top 5.5%39 / 313
Skewb3.226.48
top 6.1%30 / 338
3×3 blindfolded49.401:00.48
top 9.7%49 / 282
Pyraminx4.415.81
top 9.8%112 / 688
3×3 Fewest Moves30 moves32.33
top 14.8%63 / 201
Square-114.3124.75
top 14.8%61 / 245
Clock8.1010.96
top 15.7%55 / 263
3×3 Multi-Blind7 of 8 cubes · 56:41—
early days — 3 solves61 / 128
4×4 blindfolded8:28.68—
early days — 3 solves30 / 81
5×5 blindfolded45:17.00—
early days — 1 solve49 / 50

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 Kansai Spring 2010: 9.86Kansai New Year 2011: 9.63Japan Contest Spring 2013: 8.81Lake-Biwa Open 2013: 8.55Kansai Star Festival 2013: 8.30East Osaka 2013: 8.44West Japan Big Cube 2013: 9.05Kansai Open 2014: 6.91JRCA Kansai Spring 2014: 8.96JRCA Kansai Summer 2014: 7.81Rubik's Cube European Championships 2014: 7.70Sapporo Open 2014: 6.93Asian Championship 2014: 8.30JRCA Kansai Fall 2014: 7.25Kyushu Open 2014: 6.58JRCA Kansai Winter 2015: 7.31Kansai Open 2015: 6.68JRCA Kansai Spring 2015: 8.00JRCA Kansai Summer 2015: 7.41Kansai Open 2016: 7.13JRCA Kansai Fall 2016: 6.77Kyushu Open 2016: 7.81Kansai Open 2017: 7.20Kansai Summer 2017: 7.17Cube Camp in Kanazawa 2017: 7.03Kobe Open 2018: 7.24Kansai Open 2018: 7.36Kyoto Open 2018: 6.85WCA Asian Championship 2018: 6.70Hiroshima 2018: 6.67Kansai Big Cube 2018: 7.70Japan Championship 2018: 7.48JRCA Kansai Winter 2019: 7.01Kansai Open 2019: 7.12Tribox Open Spring 2019: 8.34Reiwa Anniversary 2019: 7.27Tokai Open 2019: 6.44Warm Up Sydney 2019: 8.51WCA World Championship 2019: 6.75Kansai Summer 2019: 7.52Kyoto Open 2019: 7.22Japan Championship 2019: 6.23Hiroshima Open 2019: 4.80Kanazawa Open 2020: 7.37Welcome Back Ayase Winter 2020: 6.24Tokai Winter PM 2021: 6.92Minatomirai 2022: 6.40Yoga Summer B 2022: 6.96Ayase Autumn B 2022: 6.29Go x Go Kyoto 2023: 6.96Kanto Summer PM 2025: 6.59Tokyo Winter 2025: 7.274.809.8629 May 20107 Dec 2025

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-4 3×3 single — 38 people have one; it is 0.80 away.
  • A sub-20 4×4 single — 42 people have one; it is 3.56 away.

Targets move as he improves.