Sunday 6 September 2026 Rebuilt nightly from the WCA's official results · export of 6 September 2026 · About
The Middle Three
People → Republic of Korea → Hyo-Min Seo (서효민)

People · Republic of Korea

Hyo-Min Seo (서효민)

3×3 · top 0.11% of 284,439 all-time · competing since January 2013 · 2013SEOH01

Hyo-Min Seo (서효민) has been competing for 14 years. His best event is the 3×3: a personal-best single of 4.94, set at Korean Championship 2016, puts him in the top 0.11% of the 284,439 people who have ever been ranked in the event, and 7th in Republic of Korea. Until November 2015, no official 3×3 solve in the world had been that fast. Across 25 competitions since January 2013, he has put 630 official solves on the record across nine events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 78% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 8.72 in January 2013 to 4.94, a 43% improvement. He has entered 25 competitions, more competitions than 98% of everyone who has ever competed.

3×3
best event — top 0.11% of 284,439 all-time
4.94
signature single · Korean Championship 2016
630
official solves on the record
12%
solve-to-solve spread · steadier than 78% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingRepublic of Korea
3×34.948.22
top 0.11%7 / 4,352
3×3 one-handed8.4112.05
top 0.29%5 / 966
4×431.2636.35
top 3.6%76 / 1,308
5×51:09.761:11.99
top 11.4%122 / 716
2×22.854.68
top 12.6%375 / 2,319
Megaminx1:08.851:17.59
top 15.0%102 / 524
3×3 Fewest Moves33 moves—
early days — 1 solve48 / 173
Pyraminx7.768.65
top 34.2%514 / 1,271
Skewb10.2212.97
top 56.3%531 / 854

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 Style 2013: 8.72Korean Winter 2013: 7.60Korea New Year 2014: 8.44Korean Christmas Cup 2014: 7.21Happy Sheep Year 2015: 8.21Spring Comes 2015: 8.25Good Cube Show Korea 2015: 8.88Korea Winter 2015: 7.57Jeonju Spring 2016: 8.02Korean Championship 2016: 4.943x3x3 HanMaDang 2017: 7.55Korean Spring Picnic 2017: 7.78Korean Championship 2017: 7.64Cubing Korea 2019: 7.82Seoul Summer 2022: 8.71Korean Championship 2022: 7.75Daegu Hot Spring 2023: 7.74Seoul Spring 2023: 8.40Rubik's WCA World Championship 2023: 7.75Suncheon Fall 2023: 6.87Korean Championship 2023: 6.88Prime Cubing Day Seoul 2024: 7.60Anyang Haseyo 2025: 6.90Okcheon Autumn Breeze 2025: 6.664.948.885 Jan 201318 Oct 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 0.94 away.
  • A sub-8 3×3 one-handed single — 151 people have one; it is 0.41 away.

Targets move as he improves.