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The Middle Three
People → Republic of Korea → Heejun Kim (김희준)

People · Republic of Korea

Heejun Kim (김희준)

3×3 blindfolded · top 0.58% of 12,178 all-time · competing since May 2018 · 2018KIMH02

Heejun Kim (김희준) has been competing for 8 years. His best event is the 3×3 blindfolded: a personal-best single of 16.67, set at Silent Korea Spring 2024, puts him in the top 0.58% of the 12,178 people who have ever been ranked in the event, and 1st in Republic of Korea. Until December 2018, no official 3×3 blindfolded solve in the world had been that fast. Across 21 competitions since May 2018, he has put 406 official solves on the record across 16 events. Solve to solve, his 3×3 times vary about 15% around a typical one; 85% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. That figure sets aside his 7 DNFs. His 3×3 best has come down from 12.15 in May 2018 to 7.82, a 36% improvement. Heejun has entered 21 competitions, more competitions than 97% of everyone who has ever competed.

3×3 blindfolded
best event — top 0.58% of 12,178 all-time
16.67
signature single · Silent Korea Spring 2024
406
official solves on the record
15%
solve-to-solve spread · wider than 85% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingRepublic of Korea
3×3 blindfolded16.6721.90
top 0.58%1 / 217
3×37.829.09
top 2.5%153 / 4,352
5×553.581:03.28
top 2.9%34 / 716
4×430.8937.83
top 3.4%71 / 1,308
7×72:47.712:53.86
top 7.2%30 / 254
6×61:55.211:58.38
top 9.2%49 / 329
3×3 one-handed15.9318.02
top 10.0%149 / 966
2×22.623.79
top 10.1%296 / 2,319
Skewb4.267.69
top 12.7%131 / 854
4×4 blindfolded3:48.92—
early days — 2 solves12 / 48
Megaminx1:08.321:14.54
top 14.6%99 / 524
3×3 Fewest Moves34 moves—
early days — 1 solve52 / 173
Pyraminx7.1812.06
top 29.3%442 / 1,271
5×5 blindfolded13:59.00—
early days — 1 solve15 / 33
3×3 Multi-Blind8 of 11 cubes · 54:35—
early days — 2 solves35 / 74
Square-130.2639.98
top 49.8%220 / 371

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

Play Cube 2018: 12.15Korean Championship 2018: 12.61Cutory Autumn Open 2018: 10.72Busan Winter 2018: 10.53Korea Winter 2019: 10.92Seoul Winter 2019: 10.60Cutory Blossom 2019: 14.79Play Cube X4 2019: 10.47Cube Camp in Wonju 2019: 10.85Korean Championship 2019: 9.57Cubing Korea 2019: 9.56Rubik's WCA World Championship 2023: 7.82Korean Championship 2023: 8.27Daegu Cold Winter 2024: 8.55Seoul Winter 2024: 9.54Ansan Favorites 2026: 8.757.8214.7913 May 20187 Feb 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 his.

Next targets

  • A sub-15 3×3 blindfolded single — 19 people have one; it is 1.67 away.
  • A sub-6 3×3 single — 1,376 people have one; it is 1.82 away.

Targets move as he improves.