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People → Republic of Korea → JunJae Lim (임준재)

People · Republic of Korea

JunJae Lim (임준재)

Pyraminx · top 1.2% of 129,321 all-time · competing since March 2023 · 2023LIMJ03

JunJae Lim (임준재) has been competing for 3 years. His best event is the Pyraminx: a personal-best single of 2.02, set at Please Minx Korea 2025, puts him in the top 1.2% of the 129,321 people who have ever been ranked in the event, and 23rd in Republic of Korea. Until July 2011, no official Pyraminx solve in the world had been that fast. Across 27 competitions since March 2023, he has put 649 official solves on the record across twelve events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 69% of the 35,811 competitors with ten or more counted rounds. That figure sets aside his 12 DNFs. His 3×3 best has come down from 16.35 in April 2023 to 8.79, a 46% improvement. JunJae has entered 27 competitions, more competitions than 98% of everyone who has ever competed.

Pyraminx
best event — top 1.2% of 129,321 all-time
2.02
signature single · Please Minx Korea 2025
649
official solves on the record
12%
solve-to-solve spread · steadier than 69% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingRepublic of Korea
Pyraminx2.023.59
top 1.2%23 / 1,271
3×38.7912.92
top 4.4%260 / 4,352
2×22.124.83
top 5.6%155 / 2,319
4×437.3844.59
top 9.1%176 / 1,308
5×51:09.571:14.41
top 11.3%117 / 716
3×3 one-handed17.3122.25
top 13.4%189 / 966
Clock7.728.60
top 13.8%97 / 536
Skewb4.967.45
top 17.8%186 / 854
Megaminx1:25.291:38.94
top 25.1%173 / 524
6×62:34.352:38.25
top 27.8%126 / 329
7×74:00.054:17.42
top 30.7%108 / 254
Square-141.8859.60
top 67.7%278 / 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

Daegu Hot Spring 2023: 16.35Rubik's WCA World Championship 2023: 15.14Korean Championship 2023: 10.84Daegu Cold Winter 2024: 11.99Anyang Haseyo 2024: 10.83Busan Spring 2024: 11.71Prime Cubing Day Seoul 2024: 13.37Ansan Summer 2024: 10.49Korean Championship 2024: 13.36Seoul Winter 2024: 11.57Happy Suseong 2025: 12.39Korea Newcomers AM 2025: 11.74Daejeon Spring 2025: 9.64Osan Summer 2025: 12.62Suwon Summer 2025: 12.63Korea Open 2025: 12.44Uhseo Osong 2025: 12.53Seoul Winter 2026: 11.79Cube Camp in Jeju 2026: 8.79Uhseo Osong 2026: 13.73Seoul Summer 2026: 14.22Korea Open 2026: 11.638.7916.3515 Apr 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-2 Pyraminx single — 1,476 people have one; it is 0.02 away.
  • A sub-8 3×3 single — 7,931 people have one; it is 0.79 away.

Targets move as he improves.