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The Middle Three
People → Republic of Korea → Choi Hyo-Jin (최효진)

People · Republic of Korea

Choi Hyo-Jin (최효진)

Megaminx · top 0.7% of 34,786 all-time · competing since May 2017 · 2017HYOJ01

Choi Hyo-Jin (최효진) has been competing for 9 years. Her best event is the Megaminx: a personal-best single of 35.30, set at Rubik's WCA World Championship 2025, puts her in the top 0.7% of the 34,786 people who have ever been ranked in the event, and 8th in Republic of Korea. Until August 2016, no official Megaminx solve in the world had been that fast. Across 38 competitions since May 2017, she has put 829 official solves on the record across 16 events. Solve to solve, her 3×3 times vary about 12% around a typical one, steadier than 77% of the 35,811 competitors with ten or more counted rounds. Her 3×3 best has come down from 13.98 in May 2017 to 7.17, a 49% improvement. Choi has entered 38 competitions, more competitions than 99% of everyone who has ever competed.

Megaminx
best event — top 0.7% of 34,786 all-time
35.30
signature single · Rubik's WCA World Championship 2025
829
official solves on the record
12%
solve-to-solve spread · steadier than 77% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingRepublic of Korea
Megaminx35.3038.48
top 0.7%8 / 524
3×37.179.06
top 1.5%97 / 4,352
Pyraminx2.943.73
top 3.4%60 / 1,271
3×3 one-handed12.9616.42
top 4.4%56 / 966
Skewb2.965.18
top 4.8%53 / 854
5×558.641:05.72
top 4.8%57 / 716
4×433.2640.95
top 5.2%106 / 1,308
2×22.273.76
top 6.8%188 / 2,319
7×72:46.762:52.16
top 7.0%29 / 254
6×61:49.781:54.28
top 7.1%31 / 329
Clock6.357.20
top 8.5%57 / 536
Square-112.1815.94
top 10.2%43 / 371
3×3 Fewest Moves32 moves35.33
top 20.4%41 / 173
3×3 blindfolded1:39.74—
top 26.4%70 / 217
4×4 blindfolded21:53.00—
early days — 1 solve47 / 48
3×3 Multi-Blind2 of 4 cubes · 22:04—
early days — 1 solve73 / 74

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

Korean Spring Picnic 2017: 13.98Korean Championship 2017: 13.34CWR Fall 2017: 12.98Cubedu Korea 2018: 11.72CWR Winter 2018: 11.31Play Cube 2018: 13.21Korean Championship 2018: 11.03CWR Fall 2018: 10.32Korea Winter 2019: 10.17Seoul Winter 2019: 9.90Cutory Blossom 2019: 10.82Play Cube X4 2019: 8.11Cubing Operating System Summer 2019: 9.68Cube Camp in Wonju 2019: 10.92Korean Championship 2019: 10.22Daegu Autumn Open 2019: 10.50Cubing Korea 2019: 7.17ByeolLae Open 2020: 9.02Seoul Open 2024: 8.28Daegu Cold Winter 2024: 7.77Anyang Haseyo 2024: 8.73Busan Spring 2024: 9.00Philippine Championship 2024: 8.73Hamchang Winter 2024: 7.82Happy Suseong 2025: 8.80Tokyo Open PM Winter 2025: 9.84Rubik's WCA World Championship 2025: 8.16Korean Championship 2025: 9.42Seoul Winter 2026: 7.28Seoul Spring 2026: 8.93Seoul Summer 2026: 7.477.1713.986 May 201719 Jul 2026

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 her.

Next targets

  • A sub-30 Megaminx single — 75 people have one; it is 5.30 away.
  • A sub-6 3×3 single — 1,376 people have one; it is 1.17 away.

Targets move as she improves.