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The Middle Three
People → Republic of Korea → Heonjae Jung (정헌재)

People · Republic of Korea

Heonjae Jung (정헌재)

2×2 · top 1.7% of 186,767 all-time · competing since August 2016 · 2016JUNG03

Heonjae Jung (정헌재) has been competing for 10 years. His best event is the 2×2: a personal-best single of 1.39, set at Daegu Autumn Open 2019, puts him in the top 1.7% of the 186,767 people who have ever been ranked in the event, and 41st in Republic of Korea. Until November 2008, no official 2×2 solve in the world had been that fast. Across 25 competitions since August 2016, he has put 466 official solves on the record across 14 events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 72% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 18.78 in August 2016 to 9.91, a 47% improvement. Heonjae has entered 25 competitions, more competitions than 98% of everyone who has ever competed.

2×2
best event — top 1.7% of 186,767 all-time
1.39
signature single · Daegu Autumn Open 2019
466
official solves on the record
12%
solve-to-solve spread · steadier than 72% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingRepublic of Korea
2×21.393.63
top 1.7%41 / 2,319
3×39.9112.77
top 7.2%418 / 4,352
Skewb3.996.35
top 10.8%114 / 854
4×441.5652.06
top 14.0%267 / 1,308
Pyraminx6.668.82
top 25.1%385 / 1,271
Clock11.1412.51
top 30.8%205 / 536
5×51:35.091:44.82
top 31.6%281 / 716
3×3 one-handed26.3137.32
top 37.6%480 / 966
6×62:57.533:18.58
top 39.9%167 / 329
Megaminx1:50.351:56.10
top 40.6%261 / 524
7×74:34.264:44.86
top 42.5%139 / 254
3×3 Fewest Moves41 moves—
top 51.8%100 / 173
Square-155.672:09.98
top 80.8%321 / 371
3×3 blindfolded9:18.45—
early days — 2 solves214 / 217

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 Championship 2016: 18.78KAIST Spring 2017: 15.66Korean Championship 2017: 17.65CWR Fall 2017: 16.61Korean CWR Style 2017: 15.55Korean Championship 2018: 15.94Cutory Autumn Open 2018: 14.35Busan Winter 2018: 14.48Cube Camp in Wonju 2019: 13.84Korean Championship 2019: 10.79Daegu Autumn Open 2019: 14.18Korean Championship Mini 2021: 12.88Korean Spring 2022: 11.40Seoul Summer 2022: 11.02Korean Championship 2022: 12.90Daegu Hot Autumn 2022: 13.23Daegu Hot Spring 2023: 9.91Seoul Spring 2023: 11.59Rubik's WCA World Championship 2023: 14.89Rubik's WCA World Championship 2025: 12.799.9118.7812 Aug 20163 Jul 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-1 2×2 single — 1,032 people have one; it is 0.39 away.
  • A sub-8 3×3 single — 7,931 people have one; it is 1.91 away.

Targets move as he improves.