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The Middle Three
People → Republic of Korea → Jaehyun Jeong (정재현)

People · Republic of Korea

Jaehyun Jeong (정재현)

3×3 Fewest Moves · top 0.45% of 12,294 all-time · competing since April 2016 · 2016JEON02

Jaehyun Jeong (정재현) has been competing for 10 years. His best event is the 3×3 Fewest Moves: a personal-best single of 19 moves, set at Korean FMC Championship 2023, puts him in the top 0.45% of the 12,294 people who have ever been ranked in the event, and 2nd in Republic of Korea. Across 42 competitions since April 2016, he has put 619 official solves on the record across 17 events. Solve to solve, his 3×3 times vary about 17% around a typical one; 96% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 11.10 in April 2016 to 6.50, a 41% improvement. Jaehyun has entered 42 competitions, more competitions than 99% of everyone who has ever competed.

3×3 Fewest Moves
best event — top 0.45% of 12,294 all-time
19 moves
signature single · Korean FMC Championship 2023
619
official solves on the record
17%
solve-to-solve spread · wider than 96% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingRepublic of Korea
3×3 Fewest Moves19 moves20.67
top 0.45%2 / 173
3×36.507.68
top 0.85%63 / 4,352
4×428.8831.88
top 2.2%51 / 1,308
3×3 blindfolded29.4238.92
top 4.0%12 / 217
2×21.972.96
top 4.5%121 / 2,319
4×4 blindfolded2:30.902:57.14
top 5.3%4 / 48
3×3 Multi-Blind14 of 14 cubes · 56:39—
top 9.7%10 / 74
5×51:08.021:09.97
top 10.3%107 / 716
5×5 blindfolded7:06.057:36.43
top 11.0%5 / 33
Skewb4.445.48
top 14.0%148 / 854
Clock7.787.94
top 14.1%99 / 536
3×3 one-handed18.5223.74
top 16.5%235 / 966
6×62:15.382:28.20
top 18.2%86 / 329
Pyraminx5.776.55
top 18.3%293 / 1,271
Megaminx1:16.101:17.80
top 19.3%132 / 524
7×73:50.103:54.69
top 27.2%96 / 254
Square-127.4136.48
top 44.4%201 / 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

Jeonju Spring 2016: 11.10Korean Championship 2016: 13.45Korean Championship 2017: 11.25Korean Spring 2022: 10.36Seoul Summer 2022: 8.29Korean Championship 2022: 6.50Cubing SimCheong Open 2022: 8.52KAIST Fall 2022: 7.92Daegu Hot Spring 2023: 8.82Seoul Spring 2023: 7.19Rubik's WCA World Championship 2023: 8.02Suncheon Fall 2023: 7.48Korean Championship 2023: 7.31Melbourne Summer 2024: 8.80Anyang Haseyo 2024: 10.09Korean Championship 2024: 6.58Anyang Haseyo 2025: 8.60Korea Open 2025: 7.95Uhseo Osong 2025: 8.78Korean Championship 2025: 9.456.5013.452 Apr 201627 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-6 3×3 single — 1,376 people have one; it is 0.50 away.
  • A sub-25 4×4 single — 588 people have one; it is 3.88 away.

Targets move as he improves.