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The Middle Three
People → Republic of Korea → Jungyeon Cho (조정연)

People · Republic of Korea

Jungyeon Cho (조정연)

3×3 · top 1.8% of 288,433 all-time · competing since October 2023 · 2023CHOJ03

Jungyeon Cho (조정연) has been competing for 3 years. His best event is the 3×3: a personal-best single of 7.36, set at Korea Open 2025, puts him in the top 1.8% of the 288,433 people who have ever been ranked in the event, and 111th in Republic of Korea. Until July 2008, no official 3×3 solve in the world had been that fast. Across 19 competitions since October 2023, he has put 617 official solves on the record across twelve events. Solve to solve, his 3×3 times vary about 15% around a typical one; 83% of the 36,406 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 14.50 in October 2023 to 7.36, a 49% improvement. Jungyeon has entered 19 competitions, more competitions than 96% of everyone who has ever competed.

3×3
best event — top 1.8% of 288,433 all-time
7.36
signature single · Korea Open 2025
617
official solves on the record
15%
solve-to-solve spread · wider than 83% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingRepublic of Korea
3×37.369.37
top 1.8%111 / 4,390
Megaminx47.3652.68
top 4.0%29 / 526
2×21.883.26
top 4.1%112 / 2,334
Pyraminx3.264.98
top 4.5%79 / 1,294
4×433.1137.48
top 5.1%104 / 1,316
3×3 one-handed15.7018.75
top 9.6%138 / 981
5×51:09.721:16.52
top 11.5%121 / 725
Skewb4.589.44
top 15.1%166 / 874
Square-116.9224.58
top 20.8%90 / 383
Clock9.5510.90
top 22.7%154 / 541
6×62:33.362:42.79
top 27.4%123 / 335
7×74:20.824:38.81
top 38.0%127 / 256

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

Suncheon Fall 2023: 14.50Korean Championship 2023: 13.54Seoul Open 2024: 11.50Anyang Haseyo 2024: 12.61Busan Spring 2024: 9.97Prime Cubing Day Seoul 2024: 11.61Ansan Summer 2024: 8.80Korean Championship 2024: 10.16Seoul Winter 2024: 10.71Happy Suseong 2025: 9.54Anyang Haseyo 2025: 9.71Rubik's WCA World Championship 2025: 9.90Korea Open 2025: 7.36Okcheon Autumn Breeze 2025: 7.67Korean Championship 2025: 8.55Seoul Winter 2026: 7.62Seoul Spring 2026: 8.75Korea Open 2026: 10.267.3614.5029 Oct 202315 Aug 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-6 3×3 single — 1,419 people have one; it is 1.36 away.
  • A sub-40 Megaminx single — 567 people have one; it is 7.36 away.

Targets move as he improves.