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The Middle Three
People → Republic of Korea → Kim Junsu (김준수)

People · Republic of Korea

Kim Junsu (김준수)

5×5 · top 4.5% of 41,402 all-time · competing since July 2018 · 2018JUNS01

Kim Junsu (김준수) has been competing for 8 years. His best event is the 5×5: a personal-best single of 57.77, set at Korea Open 2026, puts him in the top 4.5% of the 41,402 people who have ever been ranked in the event, and 53rd in Republic of Korea. Until October 2011, no official 5×5 solve in the world had been that fast. Across 39 competitions since July 2018, he has put 1,121 official solves on the record across twelve events. Solve to solve, his 3×3 times vary about 11% around a typical one, steadier than 91% of the 36,406 competitors with ten or more counted rounds. His 3×3 best has come down from 11.87 in July 2018 to 9.17, a 23% improvement. Kim has entered 39 competitions, more competitions than 99% of everyone who has ever competed.

5×5
best event — top 4.5% of 41,402 all-time
57.77
signature single · Korea Open 2026
1,121
official solves on the record
11%
solve-to-solve spread · steadier than 91% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingRepublic of Korea
5×557.771:08.16
top 4.5%53 / 725
4×432.5637.47
top 4.7%96 / 1,316
3×39.1710.77
top 5.3%316 / 4,390
Skewb3.126.20
top 5.6%62 / 874
Pyraminx3.665.20
top 6.1%109 / 1,294
2×22.753.47
top 11.5%343 / 2,334
3×3 one-handed17.5019.07
top 13.9%199 / 981
6×62:06.392:10.80
top 13.9%70 / 335
Megaminx1:07.281:15.04
top 14.1%96 / 526
7×73:12.763:17.71
top 14.2%55 / 256
Clock8.559.88
top 17.6%124 / 541
Square-119.4522.42
top 26.7%126 / 383

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 2018: 11.87Busan Winter 2018: 10.99Seoul Winter 2019: 11.79Cutory Blossom 2019: 12.20Korean Championship 2019: 11.31Seoul Summer 2022: 10.69Korean Championship 2022: 10.65Daegu Hot Autumn 2022: 9.89KAIST Fall 2022: 9.71Daegu Hot Spring 2023: 9.74Rubik's WCA World Championship 2023: 10.04Hamchang Open 2023: 12.11Korean Championship 2023: 10.61Seoul Open 2024: 9.59Anyang Haseyo 2024: 11.36Busan Spring 2024: 9.62Prime Cubing Day Seoul 2024: 9.17Ansan Summer 2024: 9.88Korean Championship 2024: 9.88Brown Fall Seongnam 2024: 10.38Seoul Winter 2024: 11.11Korea Newcomers AM 2025: 11.06Seoul Winter 2026: 9.17Anyang Haseyo 2026: 10.19Uhseo Osong 2026: 11.97Korea Open 2026: 9.67Okay Okcheon 2026: 9.479.1712.2020 Jul 201817 Oct 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-50 5×5 single — 733 people have one; it is 7.77 away.
  • A sub-30 4×4 single — 2,465 people have one; it is 2.56 away.

Targets move as he improves.