Sunday 6 September 2026 Rebuilt nightly from the WCA's official results · export of 6 September 2026 · About
The Middle Three
People → Republic of Korea → Siwoo Kim

People · Republic of Korea

Siwoo Kim

Clock · top 3.8% of 32,048 all-time · competing since November 2022 · 2022KIMS12

Siwoo Kim has been competing for 4 years. His best event is the Clock: a personal-best single of 4.74, set at Don't DNF Denton 2023, puts him in the top 3.8% of the 32,048 people who have ever been ranked in the event, and 19th in Republic of Korea. Until June 2015, no official Clock solve in the world had been that fast. Across 36 competitions since November 2022, he has put 1,184 official solves on the record across 14 events. Solve to solve, his 3×3 times vary about 13% around a typical one, steadier than 55% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 29.27 in November 2022 to 11.25, a 62% improvement. Siwoo has entered 36 competitions, more competitions than 99% of everyone who has ever competed.

Clock
best event — top 3.8% of 32,048 all-time
4.74
signature single · Don't DNF Denton 2023
1,184
official solves on the record
13%
solve-to-solve spread · steadier than 55% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingRepublic of Korea
Clock4.746.27
top 3.8%19 / 536
Pyraminx3.084.72
top 3.9%71 / 1,271
2×22.553.48
top 9.4%275 / 2,319
3×311.2512.67
top 11.3%633 / 4,352
4×451.361:06.22
top 26.4%461 / 1,308
3×3 one-handed23.4331.00
top 29.9%390 / 966
Skewb7.6413.33
top 38.6%390 / 854
Square-125.7436.62
top 40.8%186 / 371
Megaminx2:24.083:09.42
top 58.4%350 / 524
5×52:15.99—
top 58.7%475 / 716
3×3 blindfolded3:49.16—
top 65.5%162 / 217
6×67:21.338:01.43
early days — 3 solves324 / 329
3×3 Multi-Blind2 of 4 cubes · 36:44—
early days — 1 solve75 / 74
3×3 Fewest Moves71 moves74.00
early days — 3 solves175 / 173

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

Houston Fall 2022: 29.27Cube With Intention in Denton 2022: 28.25Cubing For Water Winter 2023: 26.67Cedar Park Winter 2023: 25.02Cube Against Cancer Texas 2023: 26.05Houston Spring Side Events 2023: 22.12DFW Spring Warmup 2023: 24.10DFW Cubing Spring 2023: 24.26CubingUSA Southern Championship 2023: 21.62Space City Summer 2023: 19.46DFW Cubing Summer 2023: 14.98Pretzel Mania Dallas 2023: 16.86Brazos Cubing Fall 2023: 20.21Cube With Attention in Denton 2023: 19.13Longhorn Cube Day 2023: 16.76Fleur-de-Lis Fall LA 2023: 17.03Texas Championship 2023: 16.81DFW Cubing Fall 2023: 15.15Space City Winter 2024: 16.86DFW Cubing Winter 2024: 16.30Cube Against Cancer Texas 2024: 15.38Turning at Tompkins Spring 2024: 13.11Prime Cubing Day Seoul 2024: 16.95CubingUSA Southern Championship 2024: 13.17Brazos Cubing Fall 2024: 12.67Texas Championship 2024: 13.94Space City Winter TX 2025: 13.17Cube Against Cancer Houston 2025: 13.91Brazos Cubing Spring 2025: 12.86CubingUSA Southern Championship 2025: 11.81Space City Fall TX 2025: 13.52Texas Championship 2025: 12.76Cube Against Cancer Houston 2026: 12.09GAN Southern Championship 2026: 11.2511.2529.275 Nov 202211 Jun 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-4 Clock single — 741 people have one; it is 0.74 away.
  • A sub-3 Pyraminx single — 4,700 people have one; it is 0.08 away.

Targets move as he improves.